{"product_id":"square-d-9421-nc3-disconnect-switch","title":"Square D 9421-NC3 - 30A, Disconnect Switch","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D \u003cstrong\u003e9421-NC3\u003c\/strong\u003e is a 30A disconnect switch designed for demanding industrial and commercial environments where safe electrical isolation is essential. Engineered for reliable performance, this disconnect switch supports proper lockout\/tagout procedures and delivers clean, dependable disconnection under load, even in challenging operating conditions. With long-term durability in mind, it’s built to withstand frequent servicing and routine maintenance without compromising safety or reliability.\u003c\/p\u003e \u003ch3\u003eKey advantages that set the 9421-NC3 apart\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 30A ideal for isolating medium-power circuits and equipment\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLockout\/Tagout Ready:\u003c\/strong\u003e Designed to integrate smoothly with standard safety procedures, helping you meet compliance requirements\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable Under Load:\u003c\/strong\u003e Provides stable, secure disconnection even when circuits are energized\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable Construction:\u003c\/strong\u003e Built to endure harsh environments and long service life in busy facilities\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompact, Practical Form:\u003c\/strong\u003e Suitable for installation in a wide range of electrical enclosures and control panels\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical use cases\u003c\/h3\u003e\n\u003cp\u003eIdeal for maintenance windows in manufacturing lines, industrial facilities, and commercial sites where routine service and safety shutdowns are necessary. Use the 9421-NC3 to isolate motors, feeders, or branch circuits during wiring upgrades, troubleshooting, or preventive maintenance, ensuring technicians can work confidently without the risk of accidental re-energization.\u003c\/p\u003e \u003ch3\u003eHow it enhances safety and workflow\u003c\/h3\u003e\n\u003cp\u003eBy delivering a clear, mechanical disconnect, this switch minimizes arcing and unintended re-energization during servicing. Pair it with standard lockout devices and tags as part of a comprehensive safety program to enforce disciplined shutdowns. The result is a safer work environment, faster maintenance cycles, and improved uptime for critical equipment.\u003c\/p\u003e \u003ch3\u003eInstallation and compatibility notes\u003c\/h3\u003e\n\u003cp\u003eThe 9421-NC3 is designed for straightforward integration into existing control panels and electrical enclosures. For best results, follow your facility’s electrical safety plan and applicable codes during installation and periodic inspections. Regular checks of the switch’s operating mechanism and enclosure integrity help preserve performance over time.\u003c\/p\u003e \u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 30A\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 9421-NC3\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46383703523490,"sku":"9421-NC3","price":790.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/disconnect_switches_generic_ead778c2-3298-4a9d-9723-f233deb74379.png?v=1765252320","url":"https:\/\/www.ampstate.com\/products\/square-d-9421-nc3-disconnect-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}