{"product_id":"westinghouse-ehd1090-circuit-breaker","title":"Westinghouse | EHD1090 | Circuit Breaker | 90A | 1-Pole | 277V","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eWestinghouse EHD1090\u003c\/strong\u003e is a 90A, 1-Pole, 277V circuit breaker designed for maintenance, retrofit, and replacement projects where exact specs matter. The part number EHD1090 is your best reference for compatibility and proper fit.\u003c\/p\u003e \u003ch3\u003eOverview\u003c\/h3\u003e\n\u003cp\u003eEngineered for single-pole protection, this Westinghouse breaker provides dependable overcurrent protection for 277V circuits. It delivers consistent trip characteristics and reliable performance in panels that specify the EHD1090 family, making it a trusted choice for service and upgrade scenarios.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 90A\u003c\/li\u003e \u003cli\u003ePoles: 1-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 277V\u003c\/li\u003e \u003cli\u003ePart number: EHD1090\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cp\u003eChoose this breaker when you need a precise 90-amp, single-pole device for 277V circuits—common in commercial lighting, power distribution, and other applications where single-pole protection is required. It’s a practical solution for:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMaintenance on existing panels that specify the EHD1090\u003c\/li\u003e \u003cli\u003eRetrofits to restore original protection profiles\u003c\/li\u003e \u003cli\u003eReplacement to maintain safe, code-compliant operation\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and verification\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eImportant:\u003c\/strong\u003e Confirm fit and ratings before ordering. The part number EHD1090 is your best reference for compatibility with your panel or distribution board. When verifying, ensure:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eThe panel accepts a 1-Pole, 90A, 277V device\u003c\/li\u003e \u003cli\u003eThe mounting style and terminal connections match your enclosure\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical guidance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eKeep a spare EHD1090 on hand to minimize downtime during planned maintenance.\u003c\/li\u003e \u003cli\u003eBefore replacement, power down and isolate the main breaker to safely handle internal components.\u003c\/li\u003e \u003cli\u003eDocument the replacement with the exact part number to simplify future service and warranty considerations.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Westinghouse","offers":[{"title":"Default Title","offer_id":46424512659618,"sku":"EHD1090","price":186.0,"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\/westinghouse-ehd1090-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}