{"product_id":"square-d-qmb-323-mw-disconnect-switch","title":"Square D QMB-323-MW - 100A, Disconnect Switch","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D QMB-323-MW is a rugged, industrial-grade Disconnect Switch engineered to provide safe, reliable electrical isolation where it matters most. With a 100A rating, it delivers dependable disconnection under load, making maintenance, troubleshooting, and servicing safer and faster in busy commercial and industrial environments. Designed to support proper lockout\/tagout procedures, this switch helps you uphold safety standards without sacrificing performance or reliability.\u003c\/p\u003e \u003ch2\u003eKey benefits that set the QMB-323-MW apart\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eReliable under load\u003c\/strong\u003e — engineered to open circuits cleanly even when circuits are energized, reducing the risk of arcing or incomplete disconnection during critical maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLockout\/Tagout friendly\u003c\/strong\u003e — built to integrate seamlessly with standard lockout\/tagout practices, helping your team meet safety compliance with confidence.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndustrial-grade durability\u003c\/strong\u003e — designed for demanding environments found in factories, warehouses, and large facilities, delivering long-term performance with minimal downtime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStraightforward installation\u003c\/strong\u003e — compatible with common panel and enclosure configurations, enabling quicker installation and easier serviceability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear identification and control\u003c\/strong\u003e — provides a decisive, easy-to-operate disconnect action that clearly communicates its status to maintenance staff and operators.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal applications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eMotor feeders and power distribution circuits in manufacturing floors\u003c\/li\u003e \u003cli\u003eService entrances and main disconnect points in commercial facilities\u003c\/li\u003e \u003cli\u003ePanelboards and switchgear assemblies requiring safe isolation during maintenance\u003c\/li\u003e \u003cli\u003eEmergency isolation points where rapid, dependable disconnection is essential\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eHow it works\u003c\/h2\u003e\n\u003cp\u003eIn normal operation, the QMB-323-MW sits as a standard disconnect in the supply path. When maintenance or servicing is required, the switch is operated to the off position to interrupt the circuit. This action provides a reliable, observable open-circuit condition, enabling lockout\/tagout procedures to be applied safely. When re-energizing, rotate the handle to the on position to restore power with a controlled, verified disconnect-release process.\u003c\/p\u003e \u003ch2\u003eSpecifications at a glance\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 100A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct type:\u003c\/strong\u003e Disconnect Switch\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e QMB-323-MW\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical tips for optimal use\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003ePair the QMB-323-MW with your facility’s lockout\/tagout devices to maintain compliant safety procedures during service work.\u003c\/li\u003e \u003cli\u003eVerify enclosure fit and mounting compatibility within your existing panel or switchgear before installation to ensure a seamless retrofit.\u003c\/li\u003e \u003cli\u003eSchedule periodic functional checks to confirm clean open\/close operation and to prevent sluggish actuation in high-demand environments.\u003c\/li\u003e \u003cli\u003eMaintain clear labeling around the disconnect point to communicate its purpose and ensure quick identification during emergencies.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy choose Square D for electrical safety and reliability?\u003c\/h2\u003e\n\u003cp\u003eSquare D brings decades of electrical engineering expertise to industrial and commercial power systems. The QMB-323-MW embodies this legacy with a purpose-built design that emphasizes safe isolation, durable construction, and straightforward maintenance. If your priority is a dependable disconnect switch that supports lockout\/tagout procedures and provides robust performance under load, the QMB-323-MW is a practical, future-ready choice for your electrical safety and reliability needs.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp-State","offers":[{"title":"Default Title","offer_id":46383676260514,"sku":"QMB-323-MW","price":1010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-qmb-323-mw-100a-disconnect-switch-263.webp?v=1788817567","url":"https:\/\/www.ampstate.com\/products\/square-d-qmb-323-mw-disconnect-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}