{"product_id":"qb-45-circuit-breaker","title":"QB-45 | Circuit Breaker | 45A | 1-Pole | 240V","description":"\u003cdiv\u003e\n\u003ch2\u003eQB-45 Industrial Circuit Breaker — 45A, 1-Pole, 240V\u003c\/h2\u003e\n\u003cp\u003eThe QB-45 is a purpose-built industrial circuit breaker designed for maintenance, retrofit, and replacement tasks where precise specs matter. With a 45-amp rating, a single pole, and a 240V operating voltage, this device delivers dependable overcurrent protection for demanding electrical circuits in commercial and light industrial environments. By sticking to the QB-45 part number as your primary reference, you’ll streamline compatibility in your panels and distribution systems.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey benefits at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact electrical profile:\u003c\/strong\u003e 45A rating, 1-Pole, 240V to fit standard single-circuit protection needs without over- or under-rating.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility-first reference:\u003c\/strong\u003e The part number QB-45 is the most reliable guide for matching with existing panels and replacement schedules.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance-friendly:\u003c\/strong\u003e Ideal for retrofit projects where downtime must be minimized and consistency across a fleet of breakers is important.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReplacement-ready:\u003c\/strong\u003e A straightforward solution for replacing worn or failed breakers in compatible enclosures, preserving system protection and safety.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eUse cases and ideal applications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and service upgrades for electrical panels that require a 45A, 1-Pole, 240V protection device.\u003c\/li\u003e \u003cli\u003eRetrofit projects where modernizing old control circuits calls for matching the existing protection scheme.\u003c\/li\u003e \u003cli\u003eReplacement in legacy equipment where the QB-45 is specified as the compatible component, ensuring continuity of protection characteristics.\u003c\/li\u003e \u003cli\u003eSmall to medium loads in industrial settings, such as feeders, control circuits, and standalone equipment branches that operate at 240V.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 45A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility guidance\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm fit and ratings for your panel or enclosure. The QB-45 part number is the best reference for compatibility, helping you avoid mismatches that could affect protection and performance. If your application requires a single-pole device for a 240V circuit, this breaker is a straightforward, reliable option that aligns with standard electrical distribution practices.\u003c\/p\u003e \u003ch3\u003eWhy choose the QB-45 over generic substitutes\u003c\/h3\u003e\n\u003cp\u003eUnlike generic equivalents, the QB-45 is scoped for precise alignment with standard panels and field services that rely on consistent, documented part numbers. This specificity supports safer maintenance workflows, cleaner spare-part inventories, and predictable performance across service life, giving technicians and facility managers a trusted component for critical protection needs.\u003c\/p\u003e \u003cp\u003ePractical tips for best results: store breakers in their original packaging until install, verify that the panel’s rating supports a 1-Pole, 240V device, and consult a licensed electrician if you’re upgrading or replacing multiple components in one panel to ensure coordinated protection across circuits.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46426226524322,"sku":"QB-45","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/qb-45-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}