{"product_id":"qou140","title":"Square D QOU140 - 40A, 1-Pole, Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D QOU140 is a dedicated 40A, 1-Pole circuit breaker designed to deliver reliable overcurrent protection in electrical distribution systems. With a single-pole configuration, it provides precise protection for individual circuits within panelboards, switchboards, and control panels, making it a dependable choice for demanding industrial, commercial, and OEM environments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBreaker type:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this breaker stands out in real-world installations:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact, flexible protection\u003c\/strong\u003e — The 1-pole design fits into tight panel spaces while providing targeted protection for single-phase circuits in distribution panels and motor control centers.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e — Ideal for safeguarding dedicated feeders, control circuits, and branch circuits across industrial facilities, commercial buildings, and OEM equipment setups.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable overcurrent protection\u003c\/strong\u003e — When current exceeds 40 A, the QOU140 activates to help prevent damage to wiring, components, and equipment in critical systems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eProtect single-phase feeders and control circuits in industrial panelboards and MCCs.\u003c\/li\u003e \u003cli\u003eSafeguard essential circuits in commercial installations such as manufacturing lines, conveyors, and equipment racks.\u003c\/li\u003e \u003cli\u003eIntegrate into OEM assemblies where compact, dependable overcurrent protection is required for a specific branch circuit.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical guidance for deployment\u003c\/h2\u003e \u003cul\u003e \u003cli\u003eConfirm compatibility with your panelboard, switchboard, or control panel that supports 1-pole, 40A protection configurations.\u003c\/li\u003e \u003cli\u003eUse as part of a coordinated protection scheme to isolate and protect individual circuits within larger distribution systems.\u003c\/li\u003e \u003cli\u003eLabel circuits clearly and maintain documentation for maintenance and safety audits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Square D QOU140, you gain a purpose-built solution that emphasizes precise current protection, space-efficient installation, and dependable performance in critical distribution networks. This breaker is a solid choice for professionals who require straightforward, effective protection for single-phase circuits across a range of industrial, commercial, and OEM applications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default","offer_id":46390613049506,"sku":"QOU140","price":69.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/circuit_breaker_generic_915a43e9-c405-45af-b8cf-8d14667b428a.png?v=1765377983","url":"https:\/\/www.ampstate.com\/products\/qou140","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}