{"title":"全部产品 All Products","description":"\u003cp\u003e包含店铺内所有产品的自动系列。\u003c\/p\u003e","products":[{"product_id":"intelligent-low-voltage-switchgear","title":"Intelligent Low Voltage Switchgear | MNS \/ GCS \/ GGD Type","description":"\u003ch1\u003eIntelligent Low Voltage Switchgear — Suzhou Manufacturer\u003c\/h1\u003e\u003cp\u003eWan Long Electric delivers \u003cstrong\u003eIntelligent Low Voltage Switchgear\u003c\/strong\u003e (MNS, GCS, GGD type) engineered for demanding industrial and commercial power distribution applications. Manufactured in Suzhou, China, our switchgear combines advanced digital intelligence with robust construction to ensure safe, reliable, and efficient power management.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntelligent Monitoring:\u003c\/strong\u003e Real-time measurement of voltage, current, power, and power factor via integrated smart meters\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular Design:\u003c\/strong\u003e Drawer-type (MNS\/GCS) and fixed-type (GGD) configurations for flexible installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Breaking Capacity:\u003c\/strong\u003e Rated current up to 6300A, short-circuit withstand current up to 100kA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eArc Flash Protection:\u003c\/strong\u003e Compartmentalized busbar and cable sections minimize arc flash risk\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRemote Communication:\u003c\/strong\u003e RS485 \/ Modbus RTU \/ Profibus DP interface for SCADA integration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Certification:\u003c\/strong\u003e Compliant with IEC 61439-1\u0026amp;2, GB 7251 standards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eRated Voltage: 380V \/ 400V \/ 415V AC (up to 660V available)\u003c\/li\u003e\n\u003cli\u003eRated Current: 630A – 6300A\u003c\/li\u003e\n\u003cli\u003eProtection Degree: IP30 \/ IP40 \/ IP54 (optional)\u003c\/li\u003e\n\u003cli\u003eBusbar Material: High-conductivity copper or aluminum\u003c\/li\u003e\n\u003cli\u003eOperating Temperature: -5°C to +40°C\u003c\/li\u003e\n\u003cli\u003eHumidity: ≤90% RH (non-condensing)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIndustrial plants and factories\u003c\/li\u003e\n\u003cli\u003ePower generation and distribution substations\u003c\/li\u003e\n\u003cli\u003eCommercial buildings and data centers\u003c\/li\u003e\n\u003cli\u003eWater treatment and pumping stations\u003c\/li\u003e\n\u003cli\u003eOil \u0026amp; gas facilities\u003c\/li\u003e\n\u003cli\u003eRenewable energy (solar\/wind) power systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy Choose Wan Long Electric?\u003c\/h2\u003e\u003cp\u003eWith over 20 years of manufacturing experience in Suzhou, Wan Long Electric has supplied intelligent low voltage switchgear to customers across Southeast Asia, the Middle East, Africa, and Europe. Our factory holds ISO 9001 certification and our products are tested to IEC international standards. We offer OEM\/ODM services, custom engineering, and full technical support.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRequest a quote today\u003c\/strong\u003e and our engineering team will respond within 24 hours.\u003c\/p\u003e","brand":"Wan Long Electric","offers":[{"title":"Default Title","offer_id":43882418733122,"sku":null,"price":20000.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/LowVoltageSwitchgear.jpg?v=1782956733"},{"product_id":"intelligent-air-circuit-breaker-acb","title":"Intelligent Air Circuit Breaker (ACB) | Up to 6300A","description":"\u003ch2\u003eIntelligent Air Circuit Breaker (ACB) — China Manufacturer \u0026amp; Supplier\u003c\/h2\u003e\n\u003cp\u003eWanlong Electric is a professional \u003cstrong\u003eair circuit breaker manufacturer\u003c\/strong\u003e based in Suzhou, China, supplying intelligent ACBs to industrial buyers, panel builders, and EPC contractors worldwide. Our ACBs are factory-direct, IEC-certified, and available for OEM\/ODM customization.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose Wanlong Electric as Your ACB Supplier?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e🏭 \u003cstrong\u003eFactory Direct\u003c\/strong\u003e — No middlemen, competitive pricing from the source\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eIEC 60947-2 Certified\u003c\/strong\u003e — Meets international standards for industrial circuit protection\u003c\/li\u003e\n  \u003cli\u003e📞 \u003cstrong\u003eEnglish-Speaking Technical Team\u003c\/strong\u003e — Pre-sales consultation and after-sales support within 24 hours\u003c\/li\u003e\n  \u003cli\u003e📦 \u003cstrong\u003eOEM\/ODM Available\u003c\/strong\u003e — Custom branding, ratings, and configurations\u003c\/li\u003e\n  \u003cli\u003e🚚 \u003cstrong\u003eFast Delivery\u003c\/strong\u003e — Standard orders ship within 7 days\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Current:\u003c\/strong\u003e 630A to 6300A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBreaking Capacity (Icu):\u003c\/strong\u003e Up to 100kA at 400V AC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Voltage:\u003c\/strong\u003e Up to 690V AC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrip Unit:\u003c\/strong\u003e Intelligent electronic trip unit with LCD display\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eMounting Type:\u003c\/strong\u003e Fixed and draw-out (withdrawable) types available\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommunication:\u003c\/strong\u003e RS485 \/ Modbus RTU \/ Profibus DP \/ Ethernet\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtection Functions:\u003c\/strong\u003e Overload, short circuit, ground fault, zone selective interlocking (ZSI)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard:\u003c\/strong\u003e IEC 60947-2\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eOur air circuit breakers are widely used in:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eLow voltage main distribution boards (MDB) and sub-distribution boards\u003c\/li\u003e\n  \u003cli\u003eIndustrial power distribution panels and motor control centers (MCC)\u003c\/li\u003e\n  \u003cli\u003eData centers, hospitals, and critical power infrastructure\u003c\/li\u003e\n  \u003cli\u003eMining, petrochemical, and heavy industrial facilities\u003c\/li\u003e\n  \u003cli\u003eCommercial buildings and infrastructure projects\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCertifications \u0026amp; Standards\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIEC 60947-2 (Low-voltage switchgear and controlgear)\u003c\/li\u003e\n  \u003cli\u003eCE marking available\u003c\/li\u003e\n  \u003cli\u003eCCC certification (China Compulsory Certification)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eLooking for a reliable air circuit breaker manufacturer or ACB supplier in China? 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We offer a complete range from 16A to 1600A with both thermal-magnetic and electronic trip options. Custom ratings, accessories, and OEM branding are available. Our engineering team provides full application support and panel integration assistance.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eGet in touch for pricing and technical specifications.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Wan Long Electric","offers":[{"title":"Default Title","offer_id":43882459365442,"sku":null,"price":189.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/IntelligentMoldedCaseCircuitBreaker.jpg?v=1782956806"},{"product_id":"automatic-transfer-switch-ats","title":"Automatic Transfer Switch (ATS) | Dual Power Changeover","description":"\u003ch2\u003eAutomatic Transfer Switch (ATS) — China Manufacturer \u0026amp; Supplier\u003c\/h2\u003e\n\u003cp\u003eWanlong Electric is a professional \u003cstrong\u003eautomatic transfer switch manufacturer\u003c\/strong\u003e and \u003cstrong\u003eAC dual power changeover switch supplier\u003c\/strong\u003e based in Suzhou, China. Our ATS products are factory-direct, IEC-certified, and trusted by industrial buyers, data center operators, and EPC contractors worldwide.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose Wanlong Electric as Your ATS Supplier?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e🏭 \u003cstrong\u003eFactory Direct\u003c\/strong\u003e — Competitive pricing, no intermediaries\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eIEC 60947-6-1 Certified\u003c\/strong\u003e — International standard for transfer switching equipment\u003c\/li\u003e\n  \u003cli\u003e⚡ \u003cstrong\u003eFast Transfer Time\u003c\/strong\u003e — \u0026lt;100ms (PC class) or \u0026lt;60ms (CB class)\u003c\/li\u003e\n  \u003cli\u003e📞 \u003cstrong\u003eEnglish Technical Support\u003c\/strong\u003e — Pre-sales and after-sales within 24 hours\u003c\/li\u003e\n  \u003cli\u003e📦 \u003cstrong\u003eOEM\/ODM Available\u003c\/strong\u003e — Custom configurations and branding\u003c\/li\u003e\n  \u003cli\u003e🚚 \u003cstrong\u003eFast Delivery\u003c\/strong\u003e — Standard orders ship within 7 days\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRated Current:\u003c\/strong\u003e 63A to 3200A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e PC class (load-switching) and CB class (circuit-breaker based)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTransfer Time:\u003c\/strong\u003e \u0026lt;100ms (PC class), \u0026lt;60ms (CB class)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 3-phase 380V\/400V\/415V AC; single-phase 220V\/230V AC\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eController:\u003c\/strong\u003e Intelligent microprocessor with LCD display\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommunication:\u003c\/strong\u003e RS485 \/ Modbus RTU\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Dual power monitoring, manual override, programmable time delays\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard:\u003c\/strong\u003e IEC 60947-6-1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eData centers and server rooms requiring uninterrupted power\u003c\/li\u003e\n  \u003cli\u003eHospitals and healthcare facilities (critical power systems)\u003c\/li\u003e\n  \u003cli\u003eIndustrial plants with generator backup power\u003c\/li\u003e\n  \u003cli\u003eCommercial buildings and infrastructure projects\u003c\/li\u003e\n  \u003cli\u003eMining and petrochemical facilities\u003c\/li\u003e\n  \u003cli\u003eUtility substations and power distribution systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCertifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIEC 60947-6-1\u003c\/li\u003e\n  \u003cli\u003eCE marking available\u003c\/li\u003e\n  \u003cli\u003eCCC certification (China Compulsory Certification)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eLooking for a reliable automatic transfer switch manufacturer or AC dual power changeover switch supplier in China? Contact Wanlong Electric for factory-direct pricing, technical datasheets, or OEM inquiries.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Wan Long Electric","offers":[{"title":"Default Title","offer_id":43882460446786,"sku":null,"price":210.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/AutomaticTransferSwitches.jpg?v=1782956688"},{"product_id":"motor-protection-relay-device","title":"Motor Protection Relay \/ Device | Intelligent Motor Protection","description":"\u003ch2\u003eIntelligent Motor Protection Device — China Manufacturer \u0026amp; Supplier\u003c\/h2\u003e\n\u003cp\u003eWanlong Electric is a professional \u003cstrong\u003emotor protection device manufacturer\u003c\/strong\u003e based in Suzhou, China. Our intelligent motor protection relays are trusted by industrial buyers, panel builders, and OEM customers across mining, petrochemical, water treatment, and manufacturing industries worldwide.\u003c\/p\u003e\n\n\u003ch3\u003eWhy Choose Wanlong Electric as Your Motor Protection Device Supplier?\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e🏭 \u003cstrong\u003eFactory Direct\u003c\/strong\u003e — Competitive pricing, no intermediaries\u003c\/li\u003e\n  \u003cli\u003e✅ \u003cstrong\u003eIEC 60947-4-1 Certified\u003c\/strong\u003e — Internationally recognized motor protection standard\u003c\/li\u003e\n  \u003cli\u003e📞 \u003cstrong\u003eEnglish Technical Support\u003c\/strong\u003e — Pre-sales and after-sales within 24 hours\u003c\/li\u003e\n  \u003cli\u003e📦 \u003cstrong\u003eOEM\/ODM Available\u003c\/strong\u003e — Custom branding and configurations\u003c\/li\u003e\n  \u003cli\u003e🚚 \u003cstrong\u003eFast Delivery\u003c\/strong\u003e — Standard orders ship within 7 days\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProduct Specifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCurrent Setting Range:\u003c\/strong\u003e 0.1A to 630A\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTrip Class:\u003c\/strong\u003e Class 5, 10, 20, 30\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eProtection Functions:\u003c\/strong\u003e Overload, phase loss, phase unbalance, locked rotor, thermistor, ground fault\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e LCD with intelligent self-learning\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCommunication:\u003c\/strong\u003e RS485 \/ Modbus RTU\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStandard:\u003c\/strong\u003e IEC 60947-4-1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eProtection Functions in Detail\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e⚡ \u003cstrong\u003eOverload Protection\u003c\/strong\u003e — Prevents motor burnout from sustained overcurrent\u003c\/li\u003e\n  \u003cli\u003e⚠️ \u003cstrong\u003ePhase Loss Protection\u003c\/strong\u003e — Detects and trips on single-phase loss\u003c\/li\u003e\n  \u003cli\u003e🔄 \u003cstrong\u003ePhase Unbalance Protection\u003c\/strong\u003e — Guards against unbalanced three-phase supply\u003c\/li\u003e\n  \u003cli\u003e🔒 \u003cstrong\u003eLocked Rotor Protection\u003c\/strong\u003e — Protects against stall conditions\u003c\/li\u003e\n  \u003cli\u003e🌡️ \u003cstrong\u003eThermistor Protection\u003c\/strong\u003e — Direct winding temperature monitoring\u003c\/li\u003e\n  \u003cli\u003e🌍 \u003cstrong\u003eGround Fault Protection\u003c\/strong\u003e — Detects insulation failure and earth leakage\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eMotor control centers (MCC) and motor starters\u003c\/li\u003e\n  \u003cli\u003eMining, metallurgy, and heavy industrial motor circuits\u003c\/li\u003e\n  \u003cli\u003eWater treatment and pump stations\u003c\/li\u003e\n  \u003cli\u003eHVAC systems and compressors\u003c\/li\u003e\n  \u003cli\u003eConveyor systems and process automation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCertifications\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eIEC 60947-4-1\u003c\/li\u003e\n  \u003cli\u003eCE marking available\u003c\/li\u003e\n  \u003cli\u003eCCC certification (China Compulsory Certification)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eLooking for a reliable motor protection device or motor protection relay supplier in China? Contact Wanlong Electric for factory-direct pricing, technical datasheets, or OEM inquiries.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43882462478402,"sku":null,"price":219.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/MotorProtectionRelays.jpg?v=1782956642"},{"product_id":"st570b1-motor-protection-controller","title":"ST570B1 Intelligent Motor Protection Controller | 380-440V","description":"\u003ch2\u003eST570B1 Intelligent Motor Protection Controller\u003c\/h2\u003e\n\u003cp\u003eThe Wanlong Electric ST570B1 is a professional-grade intelligent motor protection controller engineered for reliable, real-time protection of three-phase AC motors in demanding industrial environments. With its intuitive LCD display and comprehensive monitoring capabilities, the ST570B1 gives engineers and plant operators complete visibility and control over motor performance — reducing downtime, preventing costly failures, and extending equipment life\u003c\/p\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eReal-time monitoring: load current, average current, and current unbalance (%)\u003c\/li\u003e\n\u003cli\u003ePower measurement: active power (W), reactive power (var), and power factor\u003c\/li\u003e\n\u003cli\u003eClear LCD display with real-time data readout and circuit diagram\u003c\/li\u003e\n\u003cli\u003eMultiple protection functions: overload, phase loss, phase unbalance, short circuit, ground fault\u003c\/li\u003e\n\u003cli\u003eLocal and remote control modes (就绪\/本地 switchable)\u003c\/li\u003e\n\u003cli\u003e5 programmable push-button controls: Start, Stop, Reset, Return, Settings\u003c\/li\u003e\n\u003cli\u003eStatus LED indicators: Run (green), Stop (red), Status (yellow)\u003c\/li\u003e\n\u003cli\u003eDIN rail mountable — easy panel integration\u003c\/li\u003e\n\u003cli\u003eCompact, rugged enclosure suitable for MCC and control panel installation\u003c\/li\u003e\n\u003cli\u003eRich terminal block interface for flexible wiring\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e ST570B1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Intelligent Motor Protection Controller\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWorking Voltage:\u003c\/strong\u003e 380–440V AC, 50\/60Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Three-phase AC motor protection and monitoring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplay:\u003c\/strong\u003e Built-in LCD with real-time parameter display\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl Modes:\u003c\/strong\u003e Local \/ Remote\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e DIN rail \/ panel mount\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Wan Long Electric Group Co., Ltd. (10+ years professional experience)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eApplications\u003c\/h3\u003e\n\u003cp\u003eThe ST570B1 is ideal for motor protection in Motor Control Centers (MCC), industrial switchgear panels, pump stations, compressor systems, HVAC equipment, conveyor systems, and manufacturing automation lines.\u003c\/p\u003e\n\u003ch3\u003eOEM \u0026amp; Custom Orders Welcome\u003c\/h3\u003e\n\u003cp\u003eWan Long Electric supports OEM\/ODM collaboration and bulk orders. Contact us for technical specifications, custom configurations, and competitive pricing.\u003c\/p\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43902048862274,"sku":"ST570B1","price":1500.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/ST570B1-1_27e46987-3662-4db3-8e8b-b75a0f7e8d4f.jpg?v=1782798675"},{"product_id":"st420b1-1-microprocessor-line-protection-relay","title":"ST420B1-1 Microprocessor Line Protection Relay | Feeder Circuit Protection","description":"\u003ch2\u003eST420B1-1 Microprocessor Line Protection Relay — Feeder Circuit Protection\u003c\/h2\u003e\u003cp\u003eThe Wanlong Electric \u003cstrong\u003eST420B1-1\u003c\/strong\u003e is a microprocessor-based line protection relay with integrated protection body and display module, engineered for reliable feeder circuit protection in low voltage switchgear and power distribution systems.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Design\u003c\/strong\u003e — Protection body and display module in one compact unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicroprocessor-Based\u003c\/strong\u003e — High-speed, accurate protection logic with digital signal processing\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeeder Circuit Protection\u003c\/strong\u003e — Overcurrent, short circuit, and ground fault protection for feeder circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero-Sequence CT Included\u003c\/strong\u003e — Dedicated zero-sequence current transformer for sensitive ground fault detection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Frequency Support\u003c\/strong\u003e — 50Hz and 60Hz rated frequency\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM\/ODM Available\u003c\/strong\u003e — Custom configurations from Suzhou manufacturer\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eType: Microprocessor line protection relay\u003c\/li\u003e\n\u003cli\u003eRated Voltage: Below 1kV\u003c\/li\u003e\n\u003cli\u003eRated Frequency: 50Hz \/ 60Hz\u003c\/li\u003e\n\u003cli\u003eAccessories Included: Current transformer (CT), zero-sequence current transformer\u003c\/li\u003e\n\u003cli\u003eDisplay: Integrated display module\u003c\/li\u003e\n\u003cli\u003eManufacturer: Wan Long Electric Group Co., Ltd., Suzhou, China\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLow voltage switchgear feeder circuit protection\u003c\/li\u003e\n\u003cli\u003eIndustrial power distribution boards\u003c\/li\u003e\n\u003cli\u003eMotor control centers (MCC) feeder protection\u003c\/li\u003e\n\u003cli\u003eCommercial and industrial building power systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eContact Wanlong Electric for technical datasheets, wiring diagrams, or OEM inquiries.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43907631054914,"sku":null,"price":1400.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/ST420B1-3.jpg?v=1782958070"},{"product_id":"st420h-microprocessor-line-protection-relay","title":"ST420H Microprocessor Line Protection Relay | Advanced Feeder Protection","description":"\u003ch2\u003eST420H Microprocessor Line Protection Relay — Advanced Feeder Protection\u003c\/h2\u003e\u003cp\u003eThe Wanlong Electric \u003cstrong\u003eST420H\u003c\/strong\u003e series is an advanced microprocessor-based line protection relay featuring integrated protection body and display module. Designed for demanding feeder circuit protection applications requiring enhanced protection logic and reliability.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Protection Logic\u003c\/strong\u003e — Enhanced microprocessor-based algorithms for faster, more accurate fault detection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated Design\u003c\/strong\u003e — Protection body and display module combined in one unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero-Sequence CT Included\u003c\/strong\u003e — Sensitive ground fault detection via dedicated zero-sequence current transformer\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Frequency Support\u003c\/strong\u003e — 50Hz and 60Hz rated frequency\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReliable \u0026amp; Compact\u003c\/strong\u003e — Suitable for panel board and switchgear installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM\/ODM Available\u003c\/strong\u003e — Custom configurations from Suzhou manufacturer\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModel: ST420H1 \/ ST420H2\u003c\/li\u003e\n\u003cli\u003eType: Advanced microprocessor line protection relay\u003c\/li\u003e\n\u003cli\u003eRated Voltage: Below 1kV\u003c\/li\u003e\n\u003cli\u003eRated Frequency: 50Hz \/ 60Hz\u003c\/li\u003e\n\u003cli\u003eAccessories Included: Current transformer (CT), zero-sequence current transformer\u003c\/li\u003e\n\u003cli\u003eDisplay: Integrated display module\u003c\/li\u003e\n\u003cli\u003eManufacturer: Wan Long Electric Group Co., Ltd., Suzhou, China\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eLow voltage switchgear advanced feeder protection\u003c\/li\u003e\n\u003cli\u003eIndustrial power distribution boards requiring enhanced relay functionality\u003c\/li\u003e\n\u003cli\u003eMotor control centers (MCC) with critical feeder circuits\u003c\/li\u003e\n\u003cli\u003eSubstations and power distribution systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eContact Wanlong Electric for technical datasheets, wiring diagrams, or OEM inquiries.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43907638100034,"sku":null,"price":1490.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/ST420H23-3_22f4720e-4a22-45ee-a0d9-98acd83852d9.jpg?v=1783921050"},{"product_id":"st490-multifunction-power-meter","title":"ST490 Multifunction Power Meter | Digital Energy Analyzer","description":"\u003ch2\u003eST490 Multifunction Power Meter\u003c\/h2\u003e\u003cp\u003eThe ST490 series is a three-phase multifunction power meter featuring high-resolution color LCD display with comprehensive measurement, analysis, and monitoring capabilities.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFull three-phase electrical parameter measurement (voltage, current, power, energy)\u003c\/li\u003e\n\u003cli\u003eHigh-resolution color LCD display\u003c\/li\u003e\n\u003cli\u003eRS485 communication with Modbus-RTU protocol\u003c\/li\u003e\n\u003cli\u003eOptional 4\/6 unpowered switch inputs\u003c\/li\u003e\n\u003cli\u003e4 relay outputs for alarm or control\u003c\/li\u003e\n\u003cli\u003e1 analog output (4–20mA)\u003c\/li\u003e\n\u003cli\u003eHarmonic analysis function\u003c\/li\u003e\n\u003cli\u003eOptional second communication port\u003c\/li\u003e\n\u003cli\u003eDIN rail mountable, compact design\u003c\/li\u003e\n\u003cli\u003eOEM\/ODM available — Suzhou manufacturer\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cp\u003eIdeal for power distribution panels, energy management systems, building automation, and industrial monitoring applications.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eRequest a quote or technical datasheet — contact Wanlong Electric today.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43907638165570,"sku":null,"price":1500.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/ST490-3.jpg?v=1782958406"},{"product_id":"st570-motor-protection-controller","title":"ST570 Intelligent Motor Protection Controller | Modular Design","description":"\u003ch2\u003eST570 Intelligent Motor Protection Controller — Modular Design\u003c\/h2\u003e\u003cp\u003eThe Wanlong Electric \u003cstrong\u003eST570\u003c\/strong\u003e series is a modular intelligent motor protection controller featuring a \u003cstrong\u003eseparate protection body and display module\u003c\/strong\u003e design, offering maximum installation flexibility for motor control centers and industrial switchgear panels.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeparate Body \u0026amp; Display\u003c\/strong\u003e — Protection body and display module installed independently for flexible panel layout\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComprehensive Motor Protection\u003c\/strong\u003e — Overload, phase loss, phase unbalance, locked rotor, thermistor, and ground fault protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero-Sequence CT Included\u003c\/strong\u003e — Sensitive ground fault detection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommunication Module Included\u003c\/strong\u003e — RS485 \/ Modbus RTU for remote monitoring and SCADA integration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Motor Range\u003c\/strong\u003e — Suitable for motor circuits rated 50\/60Hz, below 1kV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM\/ODM Available\u003c\/strong\u003e — Custom configurations from Suzhou manufacturer\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModel: ST570 series\u003c\/li\u003e\n\u003cli\u003eDesign: Separate protection body + display module\u003c\/li\u003e\n\u003cli\u003eRated Voltage: Below 1kV AC\u003c\/li\u003e\n\u003cli\u003eRated Frequency: 50Hz \/ 60Hz\u003c\/li\u003e\n\u003cli\u003eCommunication: RS485 \/ Modbus RTU\u003c\/li\u003e\n\u003cli\u003eAccessories Included: CT, zero-sequence CT, communication module\u003c\/li\u003e\n\u003cli\u003eProtection Functions: Overload, phase loss, phase unbalance, locked rotor, ground fault, thermistor\u003c\/li\u003e\n\u003cli\u003eManufacturer: Wan Long Electric Group Co., Ltd., Suzhou, China\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMotor control centers (MCC) requiring flexible display placement\u003c\/li\u003e\n\u003cli\u003eIndustrial switchgear panels with space constraints\u003c\/li\u003e\n\u003cli\u003eMining, water treatment, and petrochemical motor circuits\u003c\/li\u003e\n\u003cli\u003eHVAC, conveyor, and process automation systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eContact Wanlong Electric for technical datasheets, wiring diagrams, or OEM inquiries.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43907638493250,"sku":null,"price":280.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/ST570_ST570_D-4_a76bfdaf-6f1d-4e26-aff7-fddfadf67d1e.jpg?v=1783697626"},{"product_id":"st570l-motor-protection-controller","title":"ST570L Intelligent Motor Protection Controller | Integrated Display","description":"\u003ch2\u003eST570L Intelligent Motor Protection Controller — Integrated Display\u003c\/h2\u003e\u003cp\u003eThe Wanlong Electric \u003cstrong\u003eST570L\u003c\/strong\u003e series is a compact all-in-one intelligent motor protection controller featuring an \u003cstrong\u003eintegrated protection body and display module\u003c\/strong\u003e in a single unit — ideal for space-constrained motor control centers and compact switchgear panels.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAll-in-One Design\u003c\/strong\u003e — Protection body and display module integrated in one compact unit, simplifying installation and wiring\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComprehensive Motor Protection\u003c\/strong\u003e — Overload, phase loss, phase unbalance, locked rotor, and ground fault protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero-Sequence CT Included\u003c\/strong\u003e — Sensitive ground fault detection for enhanced motor safety\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpace-Saving\u003c\/strong\u003e — Compact footprint ideal for high-density MCC panels\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Motor Range\u003c\/strong\u003e — Suitable for motor circuits rated 50\/60Hz, below 1kV\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM\/ODM Available\u003c\/strong\u003e — Custom configurations from Suzhou manufacturer\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModel: ST570L1 \/ ST570L2\u003c\/li\u003e\n\u003cli\u003eDesign: Integrated protection body + display (all-in-one)\u003c\/li\u003e\n\u003cli\u003eRated Voltage: Below 1kV AC\u003c\/li\u003e\n\u003cli\u003eRated Frequency: 50Hz \/ 60Hz\u003c\/li\u003e\n\u003cli\u003eAccessories Included: CT, zero-sequence CT\u003c\/li\u003e\n\u003cli\u003eProtection Functions: Overload, phase loss, phase unbalance, locked rotor, ground 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Suitable for all power generation, distribution, and utilization applications.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eModular Drawer Design\u003c\/strong\u003e — Standardized functional units for flexible configuration and easy maintenance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Busbar Capacity\u003c\/strong\u003e — Horizontal and vertical busbars support up to 6300A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComprehensive Protection\u003c\/strong\u003e — Overload, short circuit, ground fault, and undervoltage protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntelligent Monitoring\u003c\/strong\u003e — Optional smart meters with RS485\/Modbus RTU for SCADA integration\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Application\u003c\/strong\u003e — Main and auxiliary power panels, motor control centers (MCC), distribution boards\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM\/ODM Available\u003c\/strong\u003e — Custom configurations from Suzhou manufacturer\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003ctable border=\"1\" cellspacing=\"0\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eValue\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Voltage\u003c\/td\u003e\n\u003ctd\u003e400V \/ 415V \/ 660V AC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Frequency\u003c\/td\u003e\n\u003ctd\u003e50Hz \/ 60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRated Busbar Current\u003c\/td\u003e\n\u003ctd\u003eUp to 6300A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eShort-Circuit Withstand\u003c\/td\u003e\n\u003ctd\u003eUp to 100kA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Degree\u003c\/td\u003e\n\u003ctd\u003eIP30 \/ IP40 \/ IP54\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ Modbus RTU (optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards\u003c\/td\u003e\n\u003ctd\u003eIEC 61439-1\u0026amp;2, GB 7251\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eWan Long Electric Group Co., Ltd., Suzhou, China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIndustrial plants and motor control centers (MCC)\u003c\/li\u003e\n\u003cli\u003ePower generation and distribution substations\u003c\/li\u003e\n\u003cli\u003eCommercial buildings and data centers\u003c\/li\u003e\n\u003cli\u003eWater treatment, mining, and petrochemical facilities\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eWhy Choose Wan Long Electric\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e🏭 \u003cstrong\u003eFactory Direct\u003c\/strong\u003e — Manufactured in Suzhou, China with 20+ years of MNS switchgear production experience\u003c\/li\u003e\n\u003cli\u003e✅ \u003cstrong\u003eIEC 61439 Certified\u003c\/strong\u003e — Fully compliant with international low voltage switchgear assembly standards\u003c\/li\u003e\n\u003cli\u003e🛡️ \u003cstrong\u003eIP30 \/ IP40 \/ IP54 Options\u003c\/strong\u003e — Suitable for clean indoor environments through to dusty industrial and outdoor installations\u003c\/li\u003e\n\u003cli\u003e⚡ \u003cstrong\u003eUp to 6300A \/ 100kA\u003c\/strong\u003e — Handles the most demanding industrial distribution and motor control requirements\u003c\/li\u003e\n\u003cli\u003e📡 \u003cstrong\u003eSCADA-Ready\u003c\/strong\u003e — Optional Modbus RTU \/ RS485 for real-time monitoring and energy management integration\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eContact Wan Long Electric for technical datasheets, custom configurations, or OEM inquiries.\u003c\/strong\u003e\u003c\/p\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43934416699458,"sku":null,"price":28899.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/176049832.png?v=1783306106"},{"product_id":"gck2000抽屉式交流低压开关柜","title":"GCK2000 Drawer-Type AC Low Voltage Switchgear | MCC Panel","description":"\u003ch2\u003eGCK2000 Drawer-Type AC Low Voltage Switchgear — Motor Control Center (MCC)\u003c\/h2\u003e\u003cp\u003eWanlong Electric's \u003cstrong\u003eGCK2000 series drawer-type AC low voltage switchgear\u003c\/strong\u003e is designed for motor control centers (MCC) and power distribution applications in industrial facilities. The drawer-type design allows individual functional units to be withdrawn for maintenance without interrupting other circuits.\u003c\/p\u003e\u003ch2\u003eKey Features\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDrawer-Type Functional Units\u003c\/strong\u003e — Individual units withdrawable for maintenance without system shutdown\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Control Center (MCC)\u003c\/strong\u003e — Suitable for centralized motor starting, protection, and control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Busbar Capacity\u003c\/strong\u003e — Horizontal and vertical busbars support high current ratings up to 6300A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComprehensive Protection\u003c\/strong\u003e — Overload, short circuit, ground fault, and undervoltage protection per circuit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntelligent Monitoring\u003c\/strong\u003e — Optional smart meters with RS485\/Modbus 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60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eProtection Degree\u003c\/td\u003e\n\u003ctd\u003eIP40 \/ IP54 (optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunication\u003c\/td\u003e\n\u003ctd\u003eRS485 \/ Modbus RTU (optional)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandards\u003c\/td\u003e\n\u003ctd\u003eIEC 61439, GB 7251\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eWan Long Electric Group Co., Ltd., Suzhou, China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch2\u003eApplications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eIndustrial factory power distribution\u003c\/li\u003e\n\u003cli\u003eConstruction site temporary power panels\u003c\/li\u003e\n\u003cli\u003eMining and petrochemical power distribution\u003c\/li\u003e\n\u003cli\u003eOutdoor and harsh environment power 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With a standardized 5A secondary output and 5P10 protection class, it delivers reliable performance across a wide range of industrial power applications.\u003c\/p\u003e\n\n\u003ch2\u003eLead Wire Configuration\u003c\/h2\u003e\n\u003cp\u003eThe WLCT lead wire is available in four standard lengths: \u003cstrong\u003e0.5m, 1m, 2m, and 3m\u003c\/strong\u003e. The left-end terminal connects to the main device body; the right-end terminal connects to the WLCT-*A three-phase current transformer. Naming convention: *CT*X-0.5 = 0.5m, *CT*X-1 = 1m, *CT*X-2 = 2m, *CT*X-3 = 3m.\u003c\/p\u003e\n\n\u003ch2\u003eExternal Current Transformer Specifications\u003c\/h2\u003e\n\u003cp\u003eSecondary output: \u003cstrong\u003e5A\u003c\/strong\u003e | Protection class: \u003cstrong\u003e5P10\u003c\/strong\u003e | Three units per device\u003c\/p\u003e\n\n\u003ctable border=\"1\" cellspacing=\"0\" align=\"center\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eRating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCurrent Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eCable Aperture\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZT40-500\/5\u003c\/td\u003e\n\u003ctd\u003e500A\/5A\u003c\/td\u003e\n\u003ctd\u003e250A～500A\u003c\/td\u003e\n\u003ctd\u003e31mm×42mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eZT60-820\/5\u003c\/td\u003e\n\u003ctd\u003e820A\/5A\u003c\/td\u003e\n\u003ctd\u003e410A～820A\u003c\/td\u003e\n\u003ctd\u003e32mm×62mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eThree-phase current measurement in a single compact unit\u003c\/li\u003e\n\u003cli\u003e5A standardized secondary output — compatible with standard protection relays and meters\u003c\/li\u003e\n\u003cli\u003e5P10 protection class for reliable fault current detection\u003c\/li\u003e\n\u003cli\u003eFlexible lead lengths (0.5m–3m) for various cabinet configurations\u003c\/li\u003e\n\u003cli\u003eDesigned for use with Wan Long intelligent low-voltage switchgear\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43937551876162,"sku":null,"price":99.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/175703526.jpg?v=1783411393"},{"product_id":"zct-zero-sequence-current-transformer","title":"ZCT Zero Sequence Current Transformer","description":"\u003ch2\u003eZCT Zero Sequence Current Transformer\u003c\/h2\u003e\n\u003cp\u003eThe ZCT zero sequence current transformer is an essential accessory for intelligent low-voltage switchgear systems equipped with earth fault or leakage current protection. When the device is configured with a leakage protection function, the ZCT transformer must be installed to enable accurate zero-sequence current detection and protection tripping.\u003c\/p\u003e\n\n\u003ch2\u003eModels \u0026amp; Housing Sizes\u003c\/h2\u003e\n\u003cp\u003eAvailable in three housing sizes and nine models:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eZCT46\u003c\/strong\u003e — compact housing for smaller switchgear drawers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZCT80\u003c\/strong\u003e — medium housing for standard configurations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZCT120\u003c\/strong\u003e — large housing for high-capacity applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEach housing size covers multiple current rating options. Refer to the model selection table below to choose the correct specification for your application.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMounting method: \u003cstrong\u003e2-screw fixed installation\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAn epoxy board is placed beneath the transformer to provide electrical isolation from the drawer cabinet\u003c\/li\u003e\n\u003cli\u003eDesigned for straightforward integration into Wan Long intelligent switchgear systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDedicated zero-sequence current detection for earth fault and leakage protection\u003c\/li\u003e\n\u003cli\u003eThree housing sizes (ZCT46 \/ ZCT80 \/ ZCT120) with nine model variants\u003c\/li\u003e\n\u003cli\u003eEpoxy board isolation for enhanced safety and insulation\u003c\/li\u003e\n\u003cli\u003eSimple 2-screw mounting for fast, reliable installation\u003c\/li\u003e\n\u003cli\u003eCompatible with Wan Long intelligent low-voltage switchgear\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43937591984194,"sku":null,"price":68.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/WLCT-1A_5CTX-0.5.jpg?v=1783586453"},{"product_id":"lzt-residual-current-transformer","title":"LZT Residual Current Transformer","description":"\u003ch2\u003eLZT Residual Current Transformer\u003c\/h2\u003e\n\u003cp\u003eThe LZT residual current transformer is a dedicated accessory for intelligent low-voltage switchgear systems. When the device is configured with a residual current protection function, the LZT transformer must be installed to enable accurate leakage current detection and protection tripping.\u003c\/p\u003e\n\n\u003ch2\u003eModels \u0026amp; Housing Sizes\u003c\/h2\u003e\n\u003cp\u003eAvailable in three housing sizes and three models:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eLZT46\u003c\/strong\u003e — compact housing for smaller switchgear drawers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLZT80\u003c\/strong\u003e — medium housing for standard configurations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLZT120\u003c\/strong\u003e — large housing for high-capacity applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eRefer to the model selection table below to choose the correct specification for your application.\u003c\/p\u003e\n\n\u003ch2\u003eInstallation\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eMounting method: \u003cstrong\u003e2-screw fixed installation\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAn epoxy board is placed beneath the transformer to provide electrical isolation from the drawer cabinet\u003c\/li\u003e\n\u003cli\u003eDesigned for straightforward integration into Wan Long intelligent switchgear systems\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eDedicated residual current detection for leakage protection functions\u003c\/li\u003e\n\u003cli\u003eThree housing sizes (LZT46 \/ LZT80 \/ LZT120) to suit different cabinet configurations\u003c\/li\u003e\n\u003cli\u003eEpoxy board isolation for enhanced safety and insulation\u003c\/li\u003e\n\u003cli\u003eSimple 2-screw mounting for fast, reliable installation\u003c\/li\u003e\n\u003cli\u003eCompatible with Wan Long intelligent low-voltage switchgear\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43937677738050,"sku":null,"price":58.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/1_4730ab47-6091-4507-8914-c5acff8fdaf5.jpg?v=1783411800"},{"product_id":"智能型箱式直流牵引变电站应用方案","title":"Intelligent Box-Type DC Traction Substation Solution | DC 750V Up to 1250kVA","description":"\u003cp\u003eThis solution is designed for DC 750V applications with a total capacity of less than 1250kVA, and has been successfully deployed in urban rail transit and trolleybus systems.\u003c\/p\u003e\u003ch2\u003eSystem Configuration\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Voltage Distribution:\u003c\/strong\u003e Dual high-voltage power supply with single metering; high-voltage switchgear uses HXGN15-12 ring main unit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRectifier Unit:\u003c\/strong\u003e 1 set of 12-pulse rectifier unit for stable DC output\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC Distribution System:\u003c\/strong\u003e Incoming cabinet with double-pole isolating switch; feeder cabinet with draw-out circuit breaker + bypass isolating switch; outgoing cabinet with double-pole isolating switch\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eApplication Case\u003c\/h2\u003e\u003cp\u003eSuccessfully applied in the Beijing dual-source trolleybus route replacement project, with a total of 33 intelligent box-type DC traction substations installed, each with a capacity of 1×630kVA.\u003c\/p\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43940624400450,"sku":null,"price":25699.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/85d0f834ca354d5bb9750fb68f19a1ea.jpg?v=1783493646"},{"product_id":"wldg2-dc-disconnector-switch","title":"WLDG2 DC Disconnector Switch | High-Voltage DC Isolation Device","description":"\u003ch2\u003eWLDG2 DC Disconnector Switch\u003c\/h2\u003e\u003cp\u003eThe WLDG2 is a DC disconnector (isolating switch) designed to provide safe, visible isolation of high-voltage DC circuits in traction power substations, industrial power systems, and energy infrastructure. When maintenance or inspection is required, the WLDG2 ensures a clear, verifiable break in the circuit — protecting personnel and equipment with confidence.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eVisible Break Isolation:\u003c\/strong\u003e Provides a clear, verifiable open-circuit position for safe maintenance operations\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh DC Voltage Rating:\u003c\/strong\u003e Suitable for traction substation and industrial DC power applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLockable in Open Position:\u003c\/strong\u003e Supports lockout\/tagout (LOTO) safety procedures\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Insulation:\u003c\/strong\u003e High dielectric strength to withstand DC system transient overvoltages\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow Contact Resistance:\u003c\/strong\u003e Minimizes power loss during normal operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Panel-Mount Design:\u003c\/strong\u003e Suitable for integration into DC switchgear cabinets and distribution boards\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDC traction power substations (metro, light rail, tram)\u003c\/li\u003e\n\u003cli\u003eIndustrial DC power distribution and isolation\u003c\/li\u003e\n\u003cli\u003eSemiconductor rectifier and converter equipment maintenance isolation\u003c\/li\u003e\n\u003cli\u003eEnergy storage system service disconnection\u003c\/li\u003e\n\u003cli\u003eRailway ground power infrastructure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eStandards Compliance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGB\/T 25890.1 — Railway Applications: Ground DC Switchgear, Part 1: General\u003c\/li\u003e\n\u003cli\u003eGB\/T 14048.3 — Low-voltage switchgear: Switches, disconnectors, switch-disconnectors and fuse-combination units (IEC 60947-3)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM\/ODM available.\u003c\/strong\u003e Contact Wanlong Electric for detailed technical specifications, custom configurations, and volume pricing.\u003c\/p\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43941301682242,"sku":null,"price":5800.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/Automatic_Transfer_Switches_ATS.jpg?v=1783304470"},{"product_id":"wlcz1-dc-electromagnetic-contactor","title":"WLCZ1 DC Electromagnetic Contactor | High-Voltage DC Switching Device","description":"\u003ch2\u003eWLCZ1 DC Electromagnetic Contactor\u003c\/h2\u003e\u003cp\u003eThe WLCZ1 is a DC electromagnetic contactor designed for reliable switching and control of high-voltage DC circuits in traction power systems, industrial applications, and energy storage equipment. Built to withstand demanding operating environments, it delivers consistent performance with long electrical and mechanical service life.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC Electromagnetic Operation:\u003c\/strong\u003e Fast, reliable switching response with low energy consumption during holding state\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Insulation Rating:\u003c\/strong\u003e Suitable for high-voltage DC applications including traction and industrial power systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLong Service Life:\u003c\/strong\u003e Engineered for high-frequency switching with minimal maintenance requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact Design:\u003c\/strong\u003e Space-efficient construction for integration into switchgear panels and control cabinets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Coil Voltage Range:\u003c\/strong\u003e Available in multiple DC coil voltage options to suit various control circuit requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRobust Construction:\u003c\/strong\u003e Resistant to vibration and shock for reliable operation in mobile and industrial environments\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTypical Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eDC traction power distribution and feeder circuits\u003c\/li\u003e\n\u003cli\u003eIndustrial DC motor control and protection\u003c\/li\u003e\n\u003cli\u003eEnergy storage system switching and isolation\u003c\/li\u003e\n\u003cli\u003eSemiconductor rectifier and converter equipment\u003c\/li\u003e\n\u003cli\u003eRailway and metro ground power infrastructure\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eStandards Compliance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGB\/T 14048.4 — Low-voltage switchgear and controlgear: AC contactors and motor starters (IEC 60947-4)\u003c\/li\u003e\n\u003cli\u003eGB\/T 14048.5 — Control circuit devices and switching elements (IEC 60947-5-1)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM\/ODM available.\u003c\/strong\u003e Contact Wanlong Electric for detailed technical specifications, custom configurations, and volume pricing.\u003c\/p\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43941301911618,"sku":null,"price":5800.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/DS16_40b47e7a-e9b0-48da-9e10-f96b7cdde3cd.jpg?v=1783585500"},{"product_id":"qds8直流高速断路器","title":"QDS8 DC High-Speed Circuit Breaker | Rail Traction \u0026 Industrial DC Protection","description":"\u003ch2\u003eQDS8 DC High-Speed Circuit Breaker\u003c\/h2\u003e\u003cp\u003eThe QDS8 is a unipolar, bidirectional DC high-speed circuit breaker designed for short-circuit and overload protection in metro, light rail, tram, and industrial electric traction systems. Rated up to DC1800V and 1250A, it delivers fast interruption before fault currents reach steady-state values — protecting both power semiconductors and rotating DC machinery.\u003c\/p\u003e\u003ch3\u003eKey Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC Feeder Traction Power:\u003c\/strong\u003e Protects contact wires and rails against insulation faults, short circuits, and overloads. Compatible with line fault detection circuits for auto-reclosing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraction Vehicles:\u003c\/strong\u003e Compact design with excellent shock and vibration resistance — suitable for direct installation in vehicle switchboards or high-voltage enclosures.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Semiconductor Equipment:\u003c\/strong\u003e Current-limiting characteristics provide highly sensitive protection for static converter devices before fault currents stabilize.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC Rotating Machinery:\u003c\/strong\u003e Ensures reliable closing during commutation intervals and immediate fault clearance with auto-reclose capability for industrial rolling mills.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Working Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC900V \/ DC1800V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Working Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC1000V \/ DC2000V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Insulation Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC2300V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1250A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Short-Circuit Breaking Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e30kA\/15ms, 30kA\/40ms, 30kA\/100ms, 17kA\/0ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectrical Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1,000 operations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMechanical Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥500,000 operations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoil Operating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC24V \/ 48V \/ 110V \/ 220V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (L×W×H)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e420×165×340mm (DC900V) \/ 420×165×485mm (DC1800V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e27kg (DC900V) \/ 37kg (DC1800V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShock \u0026amp; 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Rated up to DC1800V and 4000A with a rated short-circuit current of 90kA\/100ms, it delivers rapid fault interruption — protecting semiconductor rectifiers and traction power infrastructure before damage occurs.\u003c\/p\u003e\u003ch3\u003eKey Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC Feeder Traction Power:\u003c\/strong\u003e Protects contact wires and rails against insulation faults and short circuits. Compatible with line fault detection circuits for automatic reclosing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTraction Vehicles:\u003c\/strong\u003e Compact design with high shock and vibration resistance — suitable for direct installation in vehicle switchboards.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Semiconductor Equipment:\u003c\/strong\u003e Current-limiting characteristics provide sensitive protection for static converter devices, interrupting fault current before it reaches steady-state values.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDC Rotating Machinery:\u003c\/strong\u003e Ensures reliable closing during commutation intervals and immediate fault clearance with auto-reclose capability for industrial rolling mills.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Working Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC900V \/ DC1800V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaximum Working Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC1000V \/ DC2000V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Insulation Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC3000V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4000A \/ 2500A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Short-Circuit Current \/ Time Constant\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e90kA \/ 100ms\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Short-Circuit Making Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e128kA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eElectrical Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1,000 operations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMechanical Life\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≥50,000 operations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCoil Operating Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDC24V \/ 48V \/ 110V \/ 220V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions (L×W×H)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e756 × 380 × 835 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e115 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eProduct Highlights\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eHigh insulation class — overvoltage category OV4\u003c\/li\u003e\n\u003cli\u003eConvenient overcurrent trip value setting\u003c\/li\u003e\n\u003cli\u003eHigh rated short-circuit making and breaking capacity (128kA)\u003c\/li\u003e\n\u003cli\u003eElectromagnetic closing, electrical latching — significantly reduced energy consumption\u003c\/li\u003e\n\u003cli\u003e5 double-contact auxiliary contacts for versatile application requirements\u003c\/li\u003e\n\u003cli\u003eLow contact wear and high arc-quenching performance — suitable for C3 (heavy-duty) duty cycle\u003c\/li\u003e\n\u003cli\u003eHigh mechanical and electrical life; simple structure, low maintenance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eStandards Compliance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGB\/T 25890.1-2010 — Railway Applications: Ground DC Switchgear, Part 1: General\u003c\/li\u003e\n\u003cli\u003eGB\/T 25890.2-2010 — Railway Applications: Ground DC Switchgear, Part 2: DC Circuit Breakers\u003c\/li\u003e\n\u003cli\u003eGB\/T 21413.1\/2\/3-2008 — Railway Applications: Rolling Stock Electrical Equipment\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM\/ODM available.\u003c\/strong\u003e Contact Wanlong Electric for custom specifications, volume pricing, and technical support.\u003c\/p\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43941303713858,"sku":null,"price":15000.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/DS16_57e68245-6010-4f93-8831-6111378de443.jpg?v=1783585452"},{"product_id":"ysa2-intelligent-air-circuit-breaker","title":"YSA2 Intelligent Air Circuit Breaker (ACB) | 400A–6300A Smart Power Distribution","description":"\u003ch2\u003eYSA2 Intelligent Air Circuit Breaker (ACB)\u003c\/h2\u003e\u003cp\u003eThe YSA2 is a high-capacity intelligent air circuit breaker (ACB) designed for AC 50Hz power distribution networks, wind farm transformer substations, and main tower power systems. Rated from 400A to 6300A at 400V\/690V, it combines advanced multi-protection functions with smart bus communication — enabling full remote monitoring and control as a terminal element in power distribution automation systems.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntelligent Bus-Type Controller:\u003c\/strong\u003e Modular smart controller as the central processing unit; supports Modbus, Profibus-DP, and DeviceNet fieldbus protocols\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-Powered Control Circuit:\u003c\/strong\u003e Operates reliably even when auxiliary power fails — ensures protection during overload, overcurrent, or short-circuit faults\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-Remote Functions (四遥):\u003c\/strong\u003e Remote telemetry, remote signaling, remote control, and remote adjustment via upper-level SCADA systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eATS Compatibility:\u003c\/strong\u003e Works with mechanical interlock (dual-lock) for automatic source transfer switching; supports real-time monitoring and fire alarm control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelective Protection:\u003c\/strong\u003e High-precision selective protection improves power supply reliability across distribution networks\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolation Function:\u003c\/strong\u003e Can be used as an isolating switch in addition to circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e400A – 6300A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Insulation Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1000V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Working Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e400V \/ 690V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Protocols\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eModbus RTU, Profibus-DP, DeviceNet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection Functions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOverload, undervoltage, short-circuit, single-phase ground fault\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eStandards Compliance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGB\/T 14048.1 — Low-voltage switchgear, Part 1: General (IEC 60947-1)\u003c\/li\u003e\n\u003cli\u003eGB\/T 14048.2 — Low-voltage circuit breakers (IEC 60947-2)\u003c\/li\u003e\n\u003cli\u003eGB\/T 14048.5 — Control circuit devices (IEC 60947-5-1)\u003c\/li\u003e\n\u003cli\u003eGB\/T 20645 — Low-voltage electrical apparatus for high-altitude environments\u003c\/li\u003e\n\u003cli\u003eJB\/Z 19582.1\/2\/3 — Modbus application protocol specifications\u003c\/li\u003e\n\u003cli\u003eGB\/T 18858.3 — DeviceNet CDI interface standard\u003c\/li\u003e\n\u003cli\u003eGB\/T 20540 — Profibus-DP fieldbus specification\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM\/ODM available.\u003c\/strong\u003e Contact Wanlong Electric for custom specifications, volume pricing, and technical support.\u003c\/p\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43944104034370,"sku":null,"price":12000.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/YSA2-3.jpg?v=1783585346"},{"product_id":"ysk2-integrated-motor-control-protection","title":"YSK2 Integrated Motor Control \u0026 Protection Device | 1.25A–125A All-in-One","description":"\u003ch2\u003eYSK2 Integrated Motor Control \u0026amp; Protection Device\u003c\/h2\u003e\u003cp\u003eThe YSK2 is a highly integrated motor control and protection device that combines the functions of an isolator, circuit breaker (or fuse), contactor (reversible contactor), thermal relay (intelligent motor controller), current transformer, transducer, multi-function meter, residual current protection, and programmable DDC\/PLC — all in a single compact unit. Designed for AC 50\/60Hz systems up to 690V and 1.25A–125A, it dramatically simplifies motor protection and control circuits while improving reliability and reducing installation costs.\u003c\/p\u003e\u003ch3\u003eProduct Variants\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eYSK2L-63 (Standard \/ Motor Protection):\u003c\/strong\u003e LED indicators, rotary setpoint adjustment. Suitable for conventional current-type motor protection and start\/stop control.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYSK2M-63 (Intelligent \/ Motor Protection):\u003c\/strong\u003e LED + LCD display, button-based setpoint viewing and adjustment. Ideal for field parameter inspection and historical fault query.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYSK2S-63 \/ YSK2S-125 (Enhanced \/ Motor Protection):\u003c\/strong\u003e LED indicators + separate ST521LS measurement panel for parameter viewing, setpoint configuration, and fault history. Full motor protection, measurement, control, monitoring, maintenance, and communication functions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYSK2P-63 \/ YSK2P-125 (Intelligent Distribution):\u003c\/strong\u003e LED indicators + ST521LP measurement panel. Full feeder load protection, measurement, control, monitoring, maintenance, and communication functions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHighly Integrated:\u003c\/strong\u003e Replaces isolator, breaker, contactor, thermal relay, transformer, transducer, multi-function meter, RCD, and PLC in a single device — dramatically reduces circuit complexity\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Application:\u003c\/strong\u003e Multi-CPU modular platform with shared data across all products and modules; flexible, fast configuration and programming for diverse control requirements\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComprehensive Protection:\u003c\/strong\u003e Overload, overcurrent, short-circuit, current imbalance, single-phase ground fault, residual current, under\/overvoltage, voltage imbalance, phase reversal, start stall, blockage, underload, negative sequence current, busbar overtemperature, and electrical fire alarm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRich Communication Interfaces:\u003c\/strong\u003e Remote 4G\/5G, near-field wireless (WiFi\/Bluetooth), and fieldbus (Modbus, Profibus-DP) for full lifecycle information management\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnergy Efficiency:\u003c\/strong\u003e Exceeds Class 2 energy efficiency standards; eliminates intermediate wiring in motor circuits\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExpandable I\/O:\u003c\/strong\u003e Internal bus expansion for programmable I\/O control modules to implement complex logic control\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eStandards Compliance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGB\/T 14048.4 — AC contactors and motor starters (IEC 60947-4)\u003c\/li\u003e\n\u003cli\u003eGB\/T 14048.5 — Control circuit devices (IEC 60947-5-1)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM\/ODM available.\u003c\/strong\u003e Contact Wanlong Electric for custom specifications, volume pricing, and technical support.\u003c\/p\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43944129265730,"sku":null,"price":560.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/YSK2.jpg?v=1783566594"},{"product_id":"ysa4-intelligent-air-circuit-breaker","title":"YSA4 Intelligent Air Circuit Breaker (ACB) | 200A–1600A Smart Distribution","description":"\u003ch2\u003eYSA4 Intelligent Air Circuit Breaker (ACB)\u003c\/h2\u003e\u003cp\u003eThe YSA4 is a compact intelligent air circuit breaker (ACB) for AC 50Hz power distribution networks, wind farm transformer substations, and main tower power systems. Rated from 200A to 1600A at 400V\/690V, it integrates advanced multi-protection functions with smart bus communication — enabling full remote monitoring and control as a terminal element in power distribution automation systems.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntelligent Bus-Type Controller:\u003c\/strong\u003e Modular smart controller as the central processing unit; supports Modbus, Profibus-DP, and DeviceNet fieldbus protocols\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelf-Powered Control Circuit:\u003c\/strong\u003e Operates reliably even when auxiliary power fails — ensures protection during overload, overcurrent, or short-circuit faults\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFour-Remote Functions (四遥):\u003c\/strong\u003e Remote telemetry, remote signaling, remote control, and remote adjustment via upper-level SCADA systems\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eATS Compatibility:\u003c\/strong\u003e Works with mechanical interlock (dual-lock) for automatic source transfer switching; supports real-time monitoring and fire alarm control\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSelective Protection:\u003c\/strong\u003e High-precision selective protection improves power supply reliability\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolation Function:\u003c\/strong\u003e Can be used as an isolating switch in addition to circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Frequency\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eAC 50Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e200A – 1600A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Insulation Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1000V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Working Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e400V \/ 690V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCommunication Protocols\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eModbus RTU, Profibus-DP, DeviceNet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eProtection Functions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eOverload, undervoltage, short-circuit, single-phase ground fault\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eStandards Compliance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eGB\/T 14048.1 — Low-voltage switchgear, Part 1: General (IEC 60947-1)\u003c\/li\u003e\n\u003cli\u003eGB\/T 14048.2 — Low-voltage circuit breakers (IEC 60947-2)\u003c\/li\u003e\n\u003cli\u003eGB\/T 14048.5 — Control circuit devices (IEC 60947-5-1)\u003c\/li\u003e\n\u003cli\u003eGB\/T 20645 — Low-voltage electrical apparatus for high-altitude environments\u003c\/li\u003e\n\u003cli\u003eJB\/Z 19582.1\/2\/3 — Modbus application protocol specifications\u003c\/li\u003e\n\u003cli\u003eGB\/T 18858.3 — DeviceNet CDI interface standard\u003c\/li\u003e\n\u003cli\u003eGB\/T 20540 — Profibus-DP fieldbus specification\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003cstrong\u003eOEM\/ODM available.\u003c\/strong\u003e Contact Wanlong Electric for custom specifications, volume pricing, and technical support.\u003c\/p\u003e","brand":"Wan Long Electric Group Co., Ltd.","offers":[{"title":"Default Title","offer_id":43944166195266,"sku":null,"price":8900.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/YSA4.jpg?v=1783585256"},{"product_id":"ysm5-molded-case-circuit-breaker-mccb","title":"YSM5 Molded Case Circuit Breaker (MCCB) | 16A–800A AC400V–690V","description":"\u003ch2\u003eYSM5 Molded Case Circuit Breaker (MCCB)\u003c\/h2\u003e\u003cp\u003eThe YSM5 is a new-generation molded case circuit breaker (MCCB) developed to international standards with advanced manufacturing technology. Designed for AC 50\/60Hz power distribution networks rated at 400V and 690V, it provides reliable overload, short-circuit, and undervoltage protection for circuits and power equipment from 16A to 800A. 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