{"product_id":"industrial-eh1090","title":"Industrial EH1090 90A 1-Pole 277 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eThe Industrial EH1090 90A 1-Pole 277 V Circuit Breaker is built for demanding commercial and industrial environments where reliable overcurrent protection matters. With a 90 A current rating and a single-pole design, this breaker powers isolated, high-demand 277 V circuits while guarding wiring and connected equipment from overloads and short circuits. Part Number EH1090, this unit is a precise solution for protecting individual hot legs in 277 V systems.\u003c\/p\u003e \u003cp\u003eWhy choose the EH1090 for your 277 V circuits?\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFocused single-pole protection\u003c\/strong\u003e for dedicated 277 V branches, ideal for lighting runs, feeders, or control circuits in commercial facilities.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-load capability\u003c\/strong\u003e tailored to circuits that require up to 90 A, helping prevent nuisance trips and downtime on critical equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndustrial-grade reliability\u003c\/strong\u003e designed to function within the realities of busy panelboards and service entrances, delivering dependable protection when it matters most.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompact form factor\u003c\/strong\u003e compatible with common industrial panels that accommodate 1-pole breakers in 277 V setups, simplifying retrofits and new installations alike.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e277 V lighting circuits in commercial buildings and warehouses\u003c\/li\u003e \u003cli\u003e feeders for industrial automation equipment and control panels\u003c\/li\u003e \u003cli\u003eIndividual branch circuits that require robust protection without introducing multi-pole complexity\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat you gain with the EH1090\u003c\/h3\u003e \u003cp\u003eBy selecting the EH1090 90A 1-Pole 277 V Circuit Breaker, you’re opting for targeted protection that aligns with the needs of 277 V distribution. It helps safeguard wiring, reduces the risk of fire from electrical faults, and contributes to smoother maintenance cycles by minimizing unexpected outages on essential circuits.\u003c\/p\u003e \u003ch3\u003eTechnical highlights\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 90 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 277 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e EH1090\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for installation and use\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eVerify that the panelboard accepts 1-pole breakers rated for 277 V and that the conductor sizing matches a 90 A protection level.\u003c\/li\u003e \u003cli\u003eEnsure the single-pole breaker is allocated to a dedicated 277 V circuit to maximize protection and avoid cross-loading.\u003c\/li\u003e \u003cli\u003eConsult your facility’s electrical design guidelines to confirm compatibility with existing protection schemes and to plan for future expansion.\u003c\/li\u003e \u003cli\u003eDocument the EH1090 installation as part of your preventative maintenance records to support quick troubleshooting and compliance audits.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Industrial","offers":[{"title":"Default Title","offer_id":46423671898274,"sku":"EH1090","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/industrial-eh1090","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}