{"product_id":"square-d-qmj365-400a-600v-3-phase-switch","title":"Square D QMJ365 - 400A, 600V, 3-Phase, Switch","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D \u003cstrong\u003eQMJ365\u003c\/strong\u003e is a rugged 3‑phase switch engineered for dependable on\/off isolation and overcurrent protection in demanding industrial and commercial environments. With a robust 400A rating at 600V, this switch handles heavy motor loads and distributed power with confidence, helping you minimize downtime and maximize safety during maintenance and servicing.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e QMJ365\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePhase:\u003c\/strong\u003e 3-Phase\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy the QMJ365 stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact, maintainable fusible switch:\u003c\/strong\u003e Designed for quick field service and straightforward component replacement, reducing maintenance time and labor.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable motor disconnect and protection:\u003c\/strong\u003e Ideal for motor disconnects, panelboards, and branch circuit protection where space is at a premium but protection is non-negotiable.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRugged for harsh environments:\u003c\/strong\u003e Built to endure demanding industrial and commercial settings while delivering dependable isolation when it matters most.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear isolation for safe maintenance:\u003c\/strong\u003e Provides trusted on\/off control so technicians can work with confidence and eliminate guesswork during servicing.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMotor disconnects in manufacturing lines, pumps, and compressors\u003c\/li\u003e \u003cli\u003ePanelboards where a compact, maintainable protection device is required\u003c\/li\u003e \u003cli\u003eBranch circuit protection for centralized power distribution in industrial facilities\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eReal-world use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eIn a high-demand production line, the QMJ365 offers a rapid, reliable way to isolate motors for maintenance without removing power from the broader system.\u003c\/li\u003e \u003cli\u003eIn commercial facilities, it serves as a compact distribution point that protects three-phase loads while keeping wiring neatly organized and accessible for service teams.\u003c\/li\u003e \u003cli\u003e for HVAC or processing equipment, the QMJ365 provides dependable protection against overcurrent events that could damage expensive motors and drives.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and practical considerations\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eEnsure the system is configured to support a 600V, 3-phase supply with the QMJ365 as the point of protection and isolation.\u003c\/li\u003e \u003cli\u003ePlan for a compact footprint that fits your panelboard or disconnect enclosure while maintaining accessible maintenance clearances.\u003c\/li\u003e \u003cli\u003eLabel the switch clearly and maintain a straightforward turn-off procedure to facilitate safe servicing and emergency isolation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp-State","offers":[{"title":"Default","offer_id":46390351790242,"sku":"QMJ365","price":7338.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/fusible_disconnect_generic_d29eeae9-0666-478a-b8d8-7a5d8ab30cf5.png?v=1765368809","url":"https:\/\/www.ampstate.com\/products\/square-d-qmj365-400a-600v-3-phase-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}