{"product_id":"commander-40-amp-circuit-breaker-bql340-40a-240v-3-pole-bolt-on-circuit-breaker","title":"Commander 40 Amp Circuit Breaker BQL340 - 40 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eCommander 40 Amp Circuit Breaker BQL340 is a 3-pole, 240 V bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. The bolt-on mounting provides a rigid, vibration-resistant bus connection, helping maintain solid electrical performance even in demanding environments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting:\u003c\/strong\u003e minimizes connection movement and vibration, supporting long-term reliability in commercial and industrial panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit:\u003c\/strong\u003e delivers stable, repeatable protection by combining two protection modes—thermal for overloads and magnetic for short circuits—reducing nuisance trips and improving system coordination.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole design:\u003c\/strong\u003e protects three hot legs simultaneously in 3-phase installations, ensuring coordinated disconnection and safer shutdown across all phases.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e40 A, 240 V:\u003c\/strong\u003e precisely rated for common branch circuits in residential, commercial, and light industrial applications, providing targeted protection without unnecessary interruptions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible:\u003c\/strong\u003e engineered to pair with matching OEM load centers and panelboards, simplifying replacement and maintaining consistent protection performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical details\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Commander\u003c\/li\u003e \u003cli\u003ePart Number: \u003cstrong\u003eBQL340\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: \u003cstrong\u003e40 A\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eVoltage Rating: \u003cstrong\u003e240 V\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eNumber of Poles: \u003cstrong\u003e3\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eMounting Style: \u003cstrong\u003eBolt-on\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal for upgrading or replacing aging protection in panelboards and load centers, the BQL340 delivers precise, reliable protection for multiple circuits in a single, compact unit. It’s well suited for installations where space is at a premium and reliable, quick-response protection is essential—from homes and retail spaces to light industrial equipment rooms.\u003c\/p\u003e \u003cp\u003eIn practice, this breaker is a practical choice when you need coordinated protection across three phases in 240 V systems, along with the confidence of OEM compatibility and robust mounting. Choose the Commander 40 A BQL340 to maintain safety, minimize downtime, and keep electrical systems operating smoothly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349486063778,"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_35512b0a-e0f5-42be-bb63-b83edb6c3003.png?v=1764147945","url":"https:\/\/www.ampstate.com\/products\/commander-40-amp-circuit-breaker-bql340-40a-240v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}