{"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. The YSM5 can also be used for infrequent switching of circuits under normal operating conditions.\u003c\/p\u003e\u003ch3\u003eProduct Range\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e24 rated current specifications\u003c\/strong\u003e across 6 frame sizes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e2–3 breaking capacity levels\u003c\/strong\u003e per frame for flexible selection\u003c\/li\u003e\n\u003cli\u003eOperational breaking capacity: Ics = 22–75kA (selectable)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompact \u0026amp; High Breaking Capacity:\u003c\/strong\u003e Small footprint with high short-circuit breaking performance\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero Arc Flash Option:\u003c\/strong\u003e Install zero arc flash cover to achieve zero arc flash operation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible Mounting:\u003c\/strong\u003e Supports both vertical (upright) and horizontal installation\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIsolation Function:\u003c\/strong\u003e Equipped with isolation capability (symbol: —×)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal-Magnetic Protection:\u003c\/strong\u003e Long-time delay overload protection + instantaneous short-circuit protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh Altitude Rated:\u003c\/strong\u003e Suitable for altitudes up to 2000m; derating table available for higher altitudes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWide Temperature Range:\u003c\/strong\u003e −20°C to +70°C operating range; special orders available for −25°C to +40°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnvironmental Resistance:\u003c\/strong\u003e Resistant to humidity, mold, salt spray, and oil mist\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 50\/60Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eRated Current Range\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e16A – 800A\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\u003eAC 400V \/ 690V\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\u003e800V (160A frame) \/ 1000V (125–800A frames)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperational Breaking Capacity (Ics)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e22–75kA (selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eFrame Sizes\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 frame levels\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eInstallation Category\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMain circuit: Category III; Auxiliary circuit: Category II\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Altitude\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2000m (derating required above 2000m)\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 14048.4 — 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":43944254996546,"sku":null,"price":240.0,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0688\/1221\/0242\/files\/YSM5_df90ef11-c69f-4ce5-88d1-b3f92584913c.jpg?v=1783585299","url":"https:\/\/wanlongelectric.com\/zh\/products\/ysm5-molded-case-circuit-breaker-mccb","provider":"Wan Long Electric Group Co., Ltd.","version":"1.0","type":"link"}