{"product_id":"square-d-200-amp-qmb364w-fusible-panelboard-switch-3-pole-600vac-2","title":"Square D 200 Amp QMB364W Fusible Panelboard Switch 3 Pole 600VAC #2","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D \u003cstrong\u003e200 Amp QMB364W Fusible Panelboard Switch\u003c\/strong\u003e — a rugged, dependable solution engineered for demanding electrical distribution across industrial, commercial, and resilient residential environments. This \u003cem\u003e3-pole\u003c\/em\u003e switch handles three-phase power with confidence, delivering solid main-control for medium to large circuits while providing straightforward maintenance through fuse-based protection.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 200 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 VAC\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e 3-pole (three-phase)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProtection style:\u003c\/strong\u003e Fusible panelboard switch for reliable overcurrent protection and easy fault isolation\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePanel upgrades in facilities that require a robust, fusible main switch for enhanced protection and simplified maintenance\u003c\/li\u003e \u003cli\u003eRetrofit projects replacing aging switches without a full panel redesign, saving time and disruption\u003c\/li\u003e \u003cli\u003eMaintenance replacements where fast, dependable component availability minimizes downtime\u003c\/li\u003e \u003cli\u003eApplications across industrial, commercial, and demanding residential settings that rely on durable, serviceable switching gear\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho benefits\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eElectricians performing installation, commissioning, or servicing distribution panels\u003c\/li\u003e \u003cli\u003ePanel builders incorporating a proven fusible main switch into new or updated systems\u003c\/li\u003e \u003cli\u003eMaintenance, repair, and operations teams prioritizing dependable spares for critical infrastructure\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this Square D panelboard switch stands out\u003c\/h3\u003e\n\u003cp\u003eBeyond its specs, the QMB364W embodies Square D’s commitment to durable, long-life electrical distribution components. The \u003cstrong\u003e3-pole, 200 A, 600 VAC\u003c\/strong\u003e design provides solid protection for multi-branch circuits while simplifying integration into existing panelwork. Its fusible topology enables straightforward replacement and fault isolation, helping you minimize downtime and keep essential systems operational. This isn’t just a switch — it’s a strategic upgrade for reliability and serviceability in demanding environments.\u003c\/p\u003e \u003ch3\u003ePractical installation and maintenance considerations\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eStock the exact \u003cstrong\u003eQMB364W\u003c\/strong\u003e for quick swaps during service windows and routine maintenance\u003c\/li\u003e \u003cli\u003ePlan for fuse replacement workflows that align with your facility’s maintenance schedules to minimize any interruption to critical loads\u003c\/li\u003e \u003cli\u003eEnsure compatibility with your existing panelwork by verifying three-phase routing and wiring terminations match the 600 VAC, 200 A, 3-pole configuration\u003c\/li\u003e \u003cli\u003eUse as a strategic upgrade for facilities aiming to improve fault isolation, ease of future retrofits, and clearer maintenance paths\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re upgrading an aging distribution suite, retrofitting a facility for improved protection, or stocking reliable spares for MRO teams, the Square D \u003cstrong\u003eQMB364W\u003c\/strong\u003e stands as a trusted, service-friendly choice. It’s built to keep critical circuits protected, while offering the practical flexibility you need for ongoing modernization and efficient maintenance workflows.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46395802615970,"sku":null,"price":990.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_83963f7f-600e-419f-90c6-e7677089642b.png?v=1765492973","url":"https:\/\/www.ampstate.com\/products\/square-d-200-amp-qmb364w-fusible-panelboard-switch-3-pole-600vac-2","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}