{"product_id":"square-d-qo340swn","title":"Square D QO340SWN 40A 3-Pole 240 V Circuit Breaker Potential Transformer","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D QO340SWN — a purpose-built solution for reliable 3‑phase protection in 240 V systems. This 40 A, 3‑pole circuit breaker is tailor-made for commercial and light‑industrial panels, delivering precise current interruption when your electrical loads demand it most.\u003c\/p\u003e \u003ch3\u003eWhy choose the Square D QO340SWN?\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eClear 3‑pole protection\u003c\/strong\u003e supports three‑phase circuits, helping ensure balanced protection across all legs of your system.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e40 amp capacity\u003c\/strong\u003e provides robust protection for motor starters, HVAC equipment, and other controlled loads without unnecessary nuisance tripping.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e240 V operation\u003c\/strong\u003e aligns with common commercial electrical distributions, making it a straightforward match for standard panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDirect compatibility\u003c\/strong\u003e with Square D QO family panels helps streamline installation, replacement, and panel maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable, field‑reliable design\u003c\/strong\u003e built to endure the demands of busy electrical environments while delivering consistent protection year after year.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eThree‑phase motor loads in manufacturing, conveyors, or processing equipment\u003c\/li\u003e \u003cli\u003eHVAC and climate control circuits in commercial spaces\u003c\/li\u003e \u003cli\u003eBranch circuits distributing power to three‑phase lighting or equipment\u003c\/li\u003e \u003cli\u003ePanel maintenance and upgrade projects where a like‑for‑like replacement is desired\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e QO340SWN\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e 3‑pole circuit breaker for 240 V systems\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for technicians who value dependable protection and straightforward compatibility, the Square D QO340SWN is a reliable choice when upgrading or stocking spare breakers for 3‑phase panels. Whether you’re equipping a new installation or replacing a worn unit, this breaker delivers predictable performance, easy serviceability, and peace of mind for your electrical distribution — all in a compact, industry‑standard package.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46423098032290,"sku":"QO340SWN","price":197.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/square-d-qo340swn","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}