{"product_id":"square-d-d323nrb-100a-3p-240v-safety-switch","title":"Square D D323NRB 100A 3P 240V Safety Switch, NEMA 3R, Fusible | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D D323NRB 100A 3P 240V Safety Switch is a rugged, weather-ready disconnect designed for safe equipment isolation at the point of use. Built to handle everyday electrical work and retrofit projects, this NEMA 3R fusible switch keeps critical circuits protected while simplifying maintenance planning and part-number consistency.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage, poles, and voltage:\u003c\/strong\u003e 100 A, 3 poles, 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEnclosure rating:\u003c\/strong\u003e NEMA 3R, delivering reliable outdoor and challenging-environment protection\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFusible design:\u003c\/strong\u003e integrated fuses provide overcurrent protection and streamlined wiring\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand and part:\u003c\/strong\u003e Square D, D323NRB — ideal for retrofit work where the part number must stay consistent\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e Available from AmpState\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this safety switch stands out\u003c\/h3\u003e\n\u003cp\u003eWhen your setup demands a dependable, field-serviceable disconnect, the D323NRB shines. The 3P fusible configuration delivers robust protection for 3-phase equipment, while the NEMA 3R enclosure ensures dependable performance in outdoor or damp locations. This switch is purpose-built for environments where reliability, ease of maintenance, and compatibility with existing Square D assemblies matter most.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eEquipment disconnect and isolation at the point of use in industrial, commercial, and utility-adjacent settings\u003c\/li\u003e \u003cli\u003eRetrofit projects requiring a consistent part number to minimize changes to wiring diagrams and spare-part inventories\u003c\/li\u003e \u003cli\u003eMaintenance planning for motors, pumps, conveyors, HVAC systems, and other heavy-load equipment\u003c\/li\u003e \u003cli\u003eOutdoor or semi-exposed installations where weather resistance and safe shutdown capability are essential\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat problems it solves\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePrevents accidental energization during service by providing a clear, mechanically interlocked disconnect\u003c\/li\u003e \u003cli\u003eConsolidates overcurrent protection with the disconnect in a single, replaceable unit, reducing parts count\u003c\/li\u003e \u003cli\u003eSupports predictable maintenance cycles thanks to a standardized, widely available part\u003c\/li\u003e \u003cli\u003eDelivers reliable performance in environments subject to rain, dust, and temperature fluctuations\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for getting the most out of the D323NRB\u003c\/h3\u003e\n\u003cp\u003eBefore installation, verify your system matches the key specs: 3-phase, 240 V, 100 A, and a NEMA 3R-rated enclosure. Keep spare fuses on hand for quick replacements, and plan maintenance visits around fuse availability to minimize downtime. If you’re aligning a retrofit or replacement strategy, the D323NRB’s part-number stability helps preserve electrical schematics and service records, making future upgrades smoother and faster.\u003c\/p\u003e \u003cp\u003eWith its concrete blend of robust protection, outdoor-ready design, and part-number consistency, the Square D D323NRB 100A 3P 240V Safety Switch is a strategic choice for reliable, long-term electrical isolation across demanding applications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46411003297954,"sku":"D323NRB","price":1529.0,"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-d323nrb-100a-3p-240v-safety-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}