{"product_id":"er12-40n3sr-40a-fusible-switch","title":"ER12-40N3SR - 40A, Fusible, Switch","description":"\u003cdiv\u003e\n\u003cp\u003eThe ER12-40N3SR 40A Fusible Switch is a robust solution for reliable on\/off isolation combined with overcurrent protection in demanding industrial and commercial environments. Built to endure daily switching and the demands of motor-driven circuits, this compact switch offers precise control and dependable protection in a single, easy-to-maintain package.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e ER12-40N3SR\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 40A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProtection:\u003c\/strong\u003e Fusible (integrated fuse-based protection)\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this fusible switch stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact, maintainable design:\u003c\/strong\u003e Slim footprint fits tight panel spaces and simplifies wiring, while keeping serviceability straightforward for fuse replacements and inspections.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIntegrated protection for motor and circuit safety:\u003c\/strong\u003e The fusible configuration delivers rapid protection against overloads and short circuits, helping reduce gear damage and downtime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application in panels and disconnects:\u003c\/strong\u003e Ideal for motor disconnects, panelboards, and branch circuit protection where a dedicated, reliable switch is required.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndustrial-grade reliability:\u003c\/strong\u003e Engineered to perform in harsh environments typical of manufacturing floors, workshops, and commercial facilities.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMotor disconnects in conveyor lines, pumps, and fans where clean isolation is essential during maintenance\u003c\/li\u003e \u003cli\u003ePanelboard sections requiring a dedicated fusible switch to simplify protection strategy\u003c\/li\u003e \u003cli\u003eBranch circuits that demand both isolation and protective features in a single device\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow it protects your system\u003c\/h3\u003e\n\u003cp\u003eThe ER12-40N3SR combines a mechanical switch with integrated fusible protection. When current exceeds safe levels, the fuse element acts to interrupt the circuit, preventing overheating and potential damage to downstream equipment. This dual-action approach helps safeguard motors, control circuits, and wiring from fault conditions, while providing a clear isolation point for safe service work.\u003c\/p\u003e \u003ch3\u003ePractical tips for installation and maintenance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMatch fuse type and rating to the specific load profile to ensure optimal protection without nuisance blows.\u003c\/li\u003e \u003cli\u003eMount in a readily accessible location to facilitate quick disconnection during maintenance or emergency stops.\u003c\/li\u003e \u003cli\u003eInspect fuses regularly for signs of wear or discoloration and replace only with the correct fuse type specified for the ER12-40N3SR.\u003c\/li\u003e \u003cli\u003eFollow local electrical codes and manufacturer installation guidelines when integrating into panelboards and motor circuits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the ER12-40N3SR for a dependable, space-efficient fusible switch that delivers immediate isolation with built-in overcurrent protection. It’s a purpose-built solution for protecting motors, control panels, and branch circuits in today’s demanding industrial environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp-State","offers":[{"title":"Default","offer_id":46390329868450,"sku":"ER12-40N3SR","price":307.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/fusible_disconnect_generic_cd62160f-df5c-433f-8e69-b4e5e36d4e0e.png?v=1765368063","url":"https:\/\/www.ampstate.com\/products\/er12-40n3sr-40a-fusible-switch","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}