{"product_id":"square-d-qmb365w-disconnect-switch","title":"Square D QMB365W - 400A, 600V, 3-Pole, Fused Disconnect Switch","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered for demanding industrial and commercial environments, the Square D QMB365W 400A, 600V fused disconnect switch delivers dependable electrical isolation with built-in safety features that support lockout\/tagout procedures and safe maintenance.\u003c\/p\u003e \u003cp\u003eDesigned to interrupt fault currents cleanly while under load, this three-pole disconnect switch ensures quick, reliable disconnection when you need it most. Its robust construction is built to withstand the rigors of continuous operation in electrical rooms, equipment closets, and service panels.\u003c\/p\u003e \u003ch2\u003eKey benefits\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eHigh-current capability: 400A at a 600V rating handles large three-phase circuits with confidence.\u003c\/li\u003e \u003cli\u003eFused protection: integrated fusing provides a controlled interruption path, improving safety and reducing arcing risk during isolation.\u003c\/li\u003e \u003cli\u003eThree-pole design: removes all three phases in one simple action for comprehensive system shutdown.\u003c\/li\u003e \u003cli\u003eLockout\/Tagout readiness: compatibility with standard LOTO practices to keep personnel safe during maintenance and service work.\u003c\/li\u003e \u003cli\u003eDurable, field-ready construction: designed for longevity in busy industrial environments where reliability matters most.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cp\u003eThe QMB365W is well-suited as the primary disconnect for large equipment, motors, conveyors, and HVAC or processing lines where a dedicated, fused isolation point is required. Use it in service panels or motor control centers to enable safe maintenance, provide reliable isolation under load, and support rapid re-energization after work is completed.\u003c\/p\u003e \u003ch2\u003eTechnical specifications at a glance\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eAmperage Rating: 400A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 600V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3-Pole\u003c\/li\u003e \u003cli\u003eProduct Type: Fused Disconnect Switch\u003c\/li\u003e \u003cli\u003eBrand: Square D\u003c\/li\u003e \u003cli\u003eModel: QMB365W\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eNote: Ensure compliance with local electrical codes and follow proper lockout\/tagout procedures when using this disconnect switch. For installation, consult a qualified electrician and reference the product documentation for fuse compatibility and mounting guidelines.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp-State","offers":[{"title":"Default Title","offer_id":46383672393890,"sku":"QMB365W","price":2710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-qmb365w-400a-600v-3-pole-fused-disconnect-switch-482.webp?v=1788817179","url":"https:\/\/www.ampstate.com\/products\/square-d-qmb365w-disconnect-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}