{"product_id":"square-d-qob350vh1021-50a-3p-240v-circuit-breaker","title":"Square D QOB350VH1021 50A 3P 240V Circuit Breaker, QO, Shunt Trip | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSquare D QOB350VH1021\u003c\/strong\u003e is a 50 A, 3-pole, 240 V QO circuit breaker equipped with a shunt trip for reliable remote disconnection. Designed for panelboards, load centers, and electrical distribution systems, this unit is built to perform where dependability matters most—across commercial and light industrial applications.\u003c\/p\u003e \u003cp\u003eKey advantages of this breaker go beyond basic protection. The built-in shunt-trip capability enables instant isolation from remote controls or safety interlocks, supporting safer maintenance procedures, quicker fault response, and enhanced compliance with safety protocols. Its QO format ensures a snug, drop-in fit in compatible Square D panelboards, minimizing installation time and reducing downtime during upgrades or retrofit projects.\u003c\/p\u003e \u003cp\u003eIdeal use scenarios:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eRetrofit projects requiring a consistent part number for fleet-wide replacements, simplifying stocking and service planning.\u003c\/li\u003e \u003cli\u003eRemote shutdown needs in facilities where safety interlocks or building management systems demand quick circuit isolation.\u003c\/li\u003e \u003cli\u003eMaintenance planning for commercial spaces with distributed 240 V circuits, where rapid isolation protects personnel and equipment.\u003c\/li\u003e \u003cli\u003eNew installations that align with existing QO-based panels and distribution setups, ensuring straightforward compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eSpecifications at a glance:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 50 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e QO\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eShunt Trip:\u003c\/strong\u003e Included\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e QOB350VH1021\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D (Schneider Electric)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e AmpState\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eCompatibility and support: This part is commonly used in panelboards and load centers that accept QO breakers. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46411011817634,"sku":"QOB350VH1021","price":10.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_83963f7f-600e-419f-90c6-e7677089642b.png?v=1765492973","url":"https:\/\/www.ampstate.com\/products\/square-d-qob350vh1021-50a-3p-240v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}