{"product_id":"square-d-qoxd340-40a-3p-120v-circuit-breaker","title":"Square D QOXD340 Circuit Breaker, 40A, 3-Pole, 120V","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSquare D QOXD340 Circuit Breaker\u003c\/strong\u003e — a rugged 40 A, 3-pole solution designed for demanding industrial service, maintenance, and replacement projects. With a 120 V rating, this breaker is built to protect multi-wire and 3-phase distribution setups, delivering reliable interruption when faults or overloads occur.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Square D\u003c\/li\u003e \u003cli\u003ePart Number: QOXD340\u003c\/li\u003e \u003cli\u003eProduct Type: Circuit Breaker\u003c\/li\u003e \u003cli\u003eAmperage: 40 A\u003c\/li\u003e \u003cli\u003ePoles: 3\u003c\/li\u003e \u003cli\u003eVoltage: 120 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this matters for your system\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eThree-pole design supports multi-wire and 3-phase circuits, providing coordinated protection across multiple live conductors\u003c\/li\u003e \u003cli\u003e40 A rating is suited for protecting branch circuits and connected equipment in industrial environments\u003c\/li\u003e \u003cli\u003eIndustrial-grade protection helps reduce downtime and equipment damage by ensuring fast, predictable trips\u003c\/li\u003e \u003cli\u003eCompatibility-focused design emphasizes reliability when replacing or upgrading existing panels\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho should consider the QOXD340\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eElectrical contractors performing industrial service calls, preventative maintenance, or equipment replacement\u003c\/li\u003e \u003cli\u003ePlant maintenance teams upgrading distribution panels or reconfiguring 3-phase circuits\u003c\/li\u003e \u003cli\u003eFacilities managers seeking a trusted, durable breaker from a core electrical brand\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and installation notes\u003c\/h3\u003e\n\u003cp\u003eVerify fit by part number and application requirements to ensure seamless integration with your panel and circuits. The exact compatibility depends on your specific equipment and installation scenario, so please double-check the part number QOXD340 against your project needs.\u003c\/p\u003e \u003cp\u003eNeed help matching a part number or confirming compatibility with your application? Message us and we'll help ensure you get the right fit for your electrical system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46415949562018,"sku":"QOXD340","price":460.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-qoxd340-circuit-breaker-40a-3-pole-120v-breakers-826.webp?v=1789214113","url":"https:\/\/www.ampstate.com\/products\/square-d-qoxd340-40a-3p-120v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}