{"product_id":"square-d-qob350vh-50a-240v-3-pole-bolt-on-circuit-breaker","title":"Square D QOB350VH - 50 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSquare D QOB350VH\u003c\/strong\u003e is a 50A, 240V, 3-pole bolt-on molded case circuit breaker designed for dependable branch-circuit protection in panelboards and load centers. It combines rugged construction with precise protection for demanding electrical installations.\u003c\/p\u003e \u003cp\u003eKey strengths that set this breaker apart:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-on mounting\u003c\/strong\u003e delivers a secure, vibration-resistant bus connection, reducing movement and arcing risks in environments with equipment vibration or shifting loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable overload protection plus rapid magnetic tripping for short circuits, helping protect downstream wiring and devices with consistent, repeatable performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design for 240V systems\u003c\/strong\u003e supports balanced protection across all phases, making it suitable for 3-phase panelboards and load centers commonly used in commercial and light industrial settings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e50A, 240V rating\u003c\/strong\u003e aligns with mid-range branch circuits, feeders, and distribution pathways that require reliable protection without unnecessary nuisance trips.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e ensures straightforward replacement within matching Square D panelboards and load centers, simplifying sourcing and installation for service professionals.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eResidential service panels with multi-zone or subpanel feeder protection where a robust, fixed-mount breaker is preferred over plug-in styles.\u003c\/li\u003e \u003cli\u003eCommercial electrical rooms and light industrial panels requiring dependable branch circuit protection for 3-phase or 240V circuits.\u003c\/li\u003e \u003cli\u003eLoad centers and panelboards that demand a secure, vibration-tolerant solution to maintain consistent protection during equipment operation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhat problems it solves\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003ePrevents nuisance trips by providing a reliable thermal element that responds predictably to overloads.\u003c\/li\u003e \u003cli\u003eMinimizes connection movement and potential bus-bar wear through a rigid bolt-on mounting approach.\u003c\/li\u003e \u003cli\u003eOffers a proven, compatible replacement option that fits OEM panelboards and load centers without compromising performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eSpecifications at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Square D\u003c\/li\u003e \u003cli\u003ePart Number: QOB350VH\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 50A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 240V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor installers seeking a reliable, purpose-built solution that pairs solid mechanical mounting with precise electrical protection, the \u003cstrong\u003eQOB350VH\u003c\/strong\u003e delivers durable performance in residential, commercial, and light industrial environments. It’s not just a breaker—it’s a dependable safeguard for your panelboard and load center infrastructure.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355420938402,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/schnieder_and_square_d_breaker_and_panel_b6b855b9-128c-44b1-bcb4-7a986d2c3793.png?v=1764691996","url":"https:\/\/www.ampstate.com\/products\/square-d-qob350vh-50a-240v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}