{"product_id":"eaton-ns3-400-na-disconnect-switch","title":"Eaton NS3-400-NA - 400A, 3-Pole, Disconnect Switch","description":"\u003cdiv\u003e\n\u003cp\u003eThe Eaton \u003cstrong\u003eNS3-400-NA\u003c\/strong\u003e is a rugged, high-performance disconnect switch engineered for industrial and commercial environments where safe, reliable electrical isolation is non-negotiable. With a 400A rating across 3 poles, it delivers clean, dependable disconnection under load, helping maintenance teams execute lockout\/tagout procedures with confidence and keeping downtime to a minimum.\u003c\/p\u003e \u003ch3\u003eWhat makes the NS3-400-NA stand out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e400A, 3-Pole configuration\u003c\/strong\u003e ensures complete isolation of three-phase circuits, reducing the risk of arc flash and accidental re-energization during service work.\u003c\/li\u003e \u003cli\u003eDesigned for \u003cstrong\u003elockout\/tagout compatibility\u003c\/strong\u003e, enabling safe, compliant maintenance shutdowns.\u003c\/li\u003e \u003cli\u003eRugged construction built to endure demanding industrial environments and provide long-term reliability.\u003c\/li\u003e \u003cli\u003eCompact enough for standard electrical rooms and panel enclosures, with straightforward installation and wiring.\u003c\/li\u003e \u003cli\u003eDependable \u003cem\u003edisconnection under load\u003c\/em\u003e to prevent unexpected energization when equipment is being serviced.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho benefits most\u003c\/h3\u003e\n\u003cp\u003eFacilities engineers, maintenance technicians, and electrical contractors working in manufacturing floors, data centers, processing plants, or commercial power rooms will find the NS3-400-NA to be an essential safety and reliability asset for service disconnects and routine shutdowns.\u003c\/p\u003e \u003ch3\u003ePractical use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMain service disconnect for three-phase feeders powering motors, drives, and heavy equipment.\u003c\/li\u003e \u003cli\u003eIsolating sensitive loads during preventive maintenance without affecting upstream systems.\u003c\/li\u003e \u003cli\u003ePrimary safety switch in switchgear rooms that supports lockout\/tagout protocols.\u003c\/li\u003e \u003cli\u003eDedicated isolation point for testing or commissioning new equipment.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAmperage rating: 400A\u003c\/li\u003e \u003cli\u003eNumber of poles: 3-Pole\u003c\/li\u003e \u003cli\u003eProduct type: Disconnect Switch\u003c\/li\u003e \u003cli\u003eBrand: Eaton\u003c\/li\u003e \u003cli\u003eModel: NS3-400-NA\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCare, use, and installation notes\u003c\/h3\u003e\n\u003cp\u003eInstall in accordance with local electrical codes and the device’s enclosure requirements. Keep the switch clean and dry, inspect the operating mechanism periodically, and verify that lockout\/tagout devices are compatible with the switch handle during maintenance planning. For best results, pair this disconnect with appropriately rated conductors and protective devices to maintain system safety and reliability over the life of your installation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp-State","offers":[{"title":"Default Title","offer_id":46383672164514,"sku":"NS3-400-NA","price":1410.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-ns3-400-na-400a-3-pole-disconnect-switch-678.webp?v=1788817148","url":"https:\/\/www.ampstate.com\/products\/eaton-ns3-400-na-disconnect-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}