{"product_id":"siemens-3np-437-400a-fusible-disconnect-switch","title":"Siemens 3NP-437 - 400A, Fusible, Disconnect Switch","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens 3NP-437, a 400A fusible disconnect switch built for harsh industrial and commercial environments. It combines reliable on\/off isolation with overcurrent protection, delivering a concise, field-serviceable solution for motor disconnects, panelboards, and branch circuits.\u003c\/p\u003e \u003ch2\u003eKey features\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eModel:\u003c\/b\u003e 3NP-437\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eAmperage rating:\u003c\/b\u003e 400A\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eProtection type:\u003c\/b\u003e Fusible (fused disconnect for overcurrent protection)\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eFunctionality:\u003c\/b\u003e Instant on\/off isolation with integrated overcurrent protection\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eDesign:\u003c\/b\u003e Compact, maintainable construction designed for quick fuse replacement and serviceability\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eIdeal for:\u003c\/b\u003e Motor disconnects, panelboards, and branch circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eBest uses and applications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eMotor-driven equipment where safe isolation and rapid fault clearing are essential, such as pumps, conveyors, compressors, and fans\u003c\/li\u003e \u003cli\u003ePanelboard installations needing a single, reliable fusible disconnect in a compact footprint\u003c\/li\u003e \u003cli\u003eBranch-circuit protection in commercial facilities and light-to-medium industrial setups\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy the 3NP-437 helps you work smarter\u003c\/h2\u003e\n\u003cp\u003eThe fusible design delivers selectivity and protection in one compact device, simplifying wiring layouts and minimizing panel space requirements. When a fault occurs, the integrated fuse elements interrupt current before damage propagates, helping safeguard downstream equipment. And when maintenance is required, fuse replacement is straightforward, reducing downtime and keeping processes running smoothly.\u003c\/p\u003e \u003ch2\u003eSpecifications at a glance\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\u003cbmodel:\u003e 3NP-437\u003c\/bmodel:\u003e\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eAmperage:\u003c\/b\u003e 400A\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eProtection:\u003c\/b\u003e Fusible (fused disconnect switch)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp-State","offers":[{"title":"Default","offer_id":46390339862690,"sku":"3NP-437","price":795.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-3np-437-400a-fusible-disconnect-switch-864.webp?v=1788863754","url":"https:\/\/www.ampstate.com\/products\/siemens-3np-437-400a-fusible-disconnect-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}