{"product_id":"commander-40-amp-circuit-breaker-bql40-40a-120v-1-pole-bolt-on-circuit-breaker","title":"Commander 40 Amp Circuit Breaker BQL40 - 40 A, 120 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Commander 40 Amp Circuit Breaker BQL40 is a 1-pole, 120 V bolt-on molded case breaker engineered for dependable branch-circuit overcurrent and short-circuit protection in panelboards and load centers. With a rugged bolt-on mounting design, it delivers a secure, vibration-resistant bus connection that stays tight through demanding installations.\u003c\/p\u003e \u003ch2\u003eKey features\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant connection to the electrical bus, minimizing loose contacts and ensuring long-term reliability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by responding to both gradual overcurrent and fast short-circuit faults, reducing nuisance trips while safeguarding wiring and components.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e is ready to pair with matching load centers and panelboards for seamless integration and consistent protection performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile industrial-friendly build\u003c\/strong\u003e suitable for residential, commercial, and light industrial environments where robust circuit protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 120 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style:\u003c\/strong\u003e Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e BQL40\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal applications and use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eResidential panelboards requiring reliable 40 A protection on individual branches or subcircuits.\u003c\/li\u003e \u003cli\u003eCommercial distribution panels where stable fault interruption and secure bus connections are critical for safety and uptime.\u003c\/li\u003e \u003cli\u003eLight industrial electrical systems that endure higher vibration or frequent switching, where a bolt-on breaker helps maintain a solid electrical bond.\u003c\/li\u003e \u003cli\u003eReplacement or upgrade scenarios in OEM-compatible load centers and panelboards, ensuring consistent performance with existing equipment.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy this matters for your electrical system\u003c\/h2\u003e\n\u003cp\u003eChoosing the Commander BQL40 means prioritizing consistent protection and lasting reliability. The combination of bolt-on mounting and a thermal-magnetic trip unit means you get a dependable response to overloads and shorts, while the compatible design simplifies integration with your existing panel lineup. For installers and property owners who value solid connections, precise protection, and straightforward compatibility, the BQL40 is a thoughtfully engineered choice that helps keep circuits safe and systems running smoothly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349486162082,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton_breaker_and_panels_a8d5e200-23e2-4adc-8175-e9978178d140.png?v=1764147946","url":"https:\/\/www.ampstate.com\/products\/commander-40-amp-circuit-breaker-bql40-40a-120v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}