{"product_id":"eaton-ehd1090l-90a-277v-1-pole-circuit-breaker","title":"Eaton EHD1090L - 90 A, 277 V, 1-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003ch2\u003eOverview\u003c\/h2\u003e\n\u003cp\u003eThe Eaton EHD1090L is a compact 90A, 277V, 1-pole molded case circuit breaker designed to deliver reliable branch-circuit protection in panelboards and load centers. Built for dependable overcurrent and short-circuit protection, this breaker fits seamlessly into Eaton‑matched systems to keep electrical distribution safe and efficient.\u003c\/p\u003e \u003ch2\u003eKey Features and Benefits\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSpace‑saving molded case design\u003c\/strong\u003e prioritizes panel space, making it easier to fit multiple devices in compact installations without compromising protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal‑magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by combining overload sensing with short‑circuit response—reducing nuisance trips while reacting quickly to faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e1‑pole configuration\u003c\/strong\u003e ideal for single‑phase branch circuits common in residential, commercial, and light industrial applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e277V rating\u003c\/strong\u003e tailored for light‑commercial and certain industrial electrical systems, such as 277V lighting and related loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e designed to pair with matching Eaton panelboards and loadcenters for dependable interchangeability and performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suitable across residential, commercial, and light industrial environments where reliable protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Eaton\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e EHD1090L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal‑magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 90A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 277V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 1\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short‑circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eUse Cases and Scenarios\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eReplacing a worn or failed breaker in an Eaton panelboard serving a 277V lighting circuit in a small office or retail space.\u003c\/li\u003e \u003cli\u003eProviding robust protection for single‑phase branch circuits in light commercial environments where 277V systems are standard.\u003c\/li\u003e \u003cli\u003eNew installations where a compact, reliable 1‑pole breaker with a 90A rating is needed to manage larger load segments without crowding the panel interior.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhy Choose the Eaton EHD1090L\u003c\/h2\u003e\n\u003cp\u003eIf you’re upgrading a panel or configuring a new distribution setup, the EHD1090L offers a precise balance of space efficiency, dependable thermal‑magnetic protection, and OEM‑aligned compatibility. By selecting a part number that matches your Eaton panelboard or loadcenter, you ensure consistent performance, easier maintenance, and straightforward replacement in the future.\u003c\/p\u003e \u003ch2\u003eCompatibility \u0026amp; Installation Notes\u003c\/h2\u003e\n\u003cp\u003eThis breaker is designed to be compatible with matching Eaton OEM loadcenters and panelboards. When selecting for an existing system, verify that the panel is listed for molded case, 1‑pole, 90A, 277V operation to ensure optimal protection and seamless operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349552025762,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-ehd1090l-90-a-277-v-1-pole-circuit-breaker-ampstate-breakers-788.webp?v=1788682122","url":"https:\/\/www.ampstate.com\/products\/eaton-ehd1090l-90a-277v-1-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}