{"product_id":"square-d-qob250-50a-240v-2-pole-bolt-on-circuit-breaker","title":"Square D QOB250 - 50 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D QOB250 from AmpState brings reliable, plug-and-play protection to your electrical panel with a purpose-built bolt-on design. This 2-pole breaker delivers solid overcurrent and short-circuit protection for branch circuits at a practical 50 A and 240 V, making it a dependable choice for residential, commercial, and light industrial applications.\u003c\/p\u003e \u003ch2\u003eWhy this breaker stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant connection to the bus, helping maintain continuous protection even in dynamic panel environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e offers stable, repeatable protection by quickly reacting to both overload and short-circuit conditions, reducing the risk of nuisance trips while safeguarding wiring and equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e is designed to work with matching Square D load centers and panelboards, ensuring a cohesive, reliable protection system when upgrading or expanding existing panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile for multiple settings\u003c\/strong\u003e—particularly suited for residential panels, commercial service entrances, and light industrial distribution where dependable branch circuit protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Square D\u003c\/li\u003e \u003cli\u003ePart Number: QOB250\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 50 A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 240 V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 2\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 \u003ch2\u003ePractical use and deployment ideas\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eUpgrade or replace a legacy panel where a 2-pole, 50 A breaker is needed to protect feeders and branch circuits in a reliable, code-aligned manner.\u003c\/li\u003e \u003cli\u003eInstall in new construction where a compact, bolt-on solution minimizes panel space while delivering robust protection.\u003c\/li\u003e \u003cli\u003eIdeal for service panels in small-to-medium commercial settings and light industrial environments where consistent protection against faults is critical.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhat problems it helps solve\u003c\/h2\u003e\n\u003cp\u003eThe QOB250 targets common panel challenges: loose connections and unpredictable trips due to vibration, inconsistent protection during surge or fault events, and compatibility gaps between breakers and OEM panelboards. It provides a solid, repeatable response to overcurrent events, helping protect wiring, devices, and downstream loads while maintaining system reliability in everyday operation.\u003c\/p\u003e \u003ch2\u003eInstallation and care tips\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eConfirm panel compatibility with Square D QOB-series breakers to ensure seamless integration with your load center or panelboard lineup.\u003c\/li\u003e \u003cli\u003eUse the bolt-on mounting as intended to achieve the strongest bus connection and minimize movement from vibrations or short-term bumps.\u003c\/li\u003e \u003cli\u003eFollow manufacturer torque recommendations and electrical codes when installing or replacing breakers to maintain safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re completing a panel upgrade, stocking a service van for field repairs, or outfitting a new electrical room, the Square D QOB250 delivers dependable, industry-standard protection with a straightforward, durable design.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355412517026,"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_6c620d74-24ee-468a-8071-cd3d866cef2a.png?v=1764691949","url":"https:\/\/www.ampstate.com\/products\/square-d-qob250-50a-240v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}