{"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","url":"https:\/\/wanlongelectric.com\/products\/ysa4-intelligent-air-circuit-breaker","provider":"Wan Long Electric Group Co., Ltd.","version":"1.0","type":"link"}