{"product_id":"square-d-d321nrb-30a-3p-240v-safety-switch","title":"Square D D321NRB 30A 3P 240V Safety Switch, NEMA 3R, Fusible | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D D321NRB 30A 3P 240V Safety Switch is your go-to solution for reliable equipment disconnect and isolation right at the point of use. Built for maintenance teams, panel builders, and inventory planners who value a precise part-number match, this fusible switch combines robust protection with straightforward serviceability.\u003c\/p\u003e \u003cp\u003eKey benefits you’ll notice in daily operations:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eClear isolation at the point of use:\u003c\/strong\u003e Quickly disconnect power to motors, pumps, conveyors, and other 3-phase equipment for safe maintenance and servicing.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNEMA 3R rated enclosure:\u003c\/strong\u003e Weather-resistant protection that stands up to outdoor or damp environments, reducing exposure while you work.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFusible protection:\u003c\/strong\u003e The fusible design offers tailored overload protection—use with compatible fuses to match your system’s protection strategy and coordination needs.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompact 3-pole, 240V configuration:\u003c\/strong\u003e 30 amps in a 3P layout fits common 240V industrial circuits, making it a practical drop-in for many control panels and machine disconnects.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDirect part-number match:\u003c\/strong\u003e Designed to align with Square D’s D321NRB family, streamlining sourcing, replacements, and spare inventory management.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e D321NRB\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Safety Switch, Fusible\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 30 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEnclosure:\u003c\/strong\u003e NEMA 3R\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Equipment disconnect and isolation at the point of use\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications and scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eIndustrial and commercial equipment where a hard disconnect is required for safety during maintenance.\u003c\/li\u003e \u003cli\u003ePanel builders configuring control panels that demand a fusible, code-compliant disconnect in a weather-resistant enclosure.\u003c\/li\u003e \u003cli\u003eOutdoor or semi-exposed machinery such as pumps, fans, compressors, and HVAC gear that benefits from NEMA 3R protection.\u003c\/li\u003e \u003cli\u003eSpare inventory with a guaranteed part-number match to simplify stocking and reordering processes.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy choose this for your system?\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eIt provides dependable, code-conscious isolation with built-in overcurrent protection options via compatible fuses, helping you tailor protection to your specific equipment and duty cycle.\u003c\/li\u003e \u003cli\u003eThe NEMA 3R enclosure extends usable life in challenging environments, reducing downtime caused by weather exposure.\u003c\/li\u003e \u003cli\u003eDirect availability from AmpState ensures you can source confidently and confirm fit with support from specialists who know this exact part.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eNeed help confirming compatibility or finding the exact fuse configuration for your installation? AmpState can assist with part-number verification and fit confirmation to ensure you get a seamless, reliable safety switch that integrates with your existing gear.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46410858561698,"sku":"D321NRB","price":630.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-d321nrb-30a-3p-240v-safety-switch-nema-3r-fusible-ampstate-826.webp?v=1788978382","url":"https:\/\/www.ampstate.com\/products\/square-d-d321nrb-30a-3p-240v-safety-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}