{"product_id":"square-d-qmb365w-400a-600v-3-pole-fusible-panelboard-switch-qmb-series","title":"Square D QMB365W – 400A, 600V, 3-Pole Fusible Panelboard Switch – QMB Series","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D \u003cstrong\u003eQMB365W\u003c\/strong\u003e is a rugged 400A, 600V, 3-pole fusible panelboard switch designed to deliver dependable load disconnect and precise overcurrent protection within QMB fusible panelboards. Built for demanding electrical distributions, it provides clean isolation for maintenance and reliable protection for connected circuits, so your system stays safer and more reliable during service or fault events.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBalanced 3-pole design\u003c\/strong\u003e ensures consistent isolation across all phases in a three-phase distribution, minimizing neutral and phase-related issues during maintenance or fault events.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e200 kAIC interrupting capacity\u003c\/strong\u003e gives you confidence handling substantial fault currents typical of industrial environments, while keeping the current pathway controlled and predictable.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSeamless compatibility\u003c\/strong\u003e with the QMB fusible panelboard line keeps installations straightforward, avoiding compatibility headaches during upgrades or replacements.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRobust specification set\u003c\/strong\u003e—400 A, 600 V, 3 poles, part number QMB365W, manufactured by Schneider Electric \/ Square D—engineered for reliability in commercial and light industrial applications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eFeeder protection and load isolation in large commercial or light industrial panelboards, where dependable disconnection is critical for safety and reliability.\u003c\/li\u003e \u003cli\u003ePrimary disconnects for three-phase electrical systems requiring rapid, reliable disconnection during maintenance or fault events.\u003c\/li\u003e \u003cli\u003eUpgrades or replacements within existing QMB panelboard configurations to maintain consistent protection standards without overhauling the distribution layout.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical notes for installation and operation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003ePair the QMB365W with the correct fuse class to achieve full load disconnect and overcurrent protection.\u003c\/li\u003e \u003cli\u003eVerify compatibility with your QMB fusible panelboard before installation to ensure optimal performance and safety margins.\u003c\/li\u003e \u003cli\u003eFollow applicable electrical codes during installation to maintain compliance and safe operation.\u003c\/li\u003e \u003cli\u003eLabel and document protective devices clearly for maintenance and safety checks, making routine inspections faster and more accurate.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThe QMB365W stands out by delivering balanced phase isolation and substantial fault-current handling in a compact, panelboard-friendly package. It’s the reliable choice for facilities that demand robust protection, easy maintenance, and seamless integration within Schneider Electric’s QMB system. Whether you’re upgrading aged gear, rewiring a new distribution point, or refreshing a panelboard lineup, this 3-pole fusible switch provides a clear, dependable path to safer, more efficient electrical distribution.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Schneider Electric \/ Square D","offers":[{"title":"Default Title","offer_id":46361518768290,"sku":"QMB365W","price":10.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/panel_mount_switches_p1_202f6eb8-96c4-4025-af50-80f1d98ab813.png?v=1764703952","url":"https:\/\/www.ampstate.com\/products\/square-d-qmb365w-400a-600v-3-pole-fusible-panelboard-switch-qmb-series","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}