{"product_id":"eaton-hfd4090l-circuit-breaker","title":"Eaton | HFD4090L | Circuit Breaker | 90A | 4-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Eaton HFD4090L circuit breaker — a precise protection device built for reliability in demanding electrical setups. With a 90 A rating, a 4-pole configuration, and a 600 V operating rating, this unit is tailored for maintenance, retrofit, and replacement projects where exact specifications matter. The part number is the best reference for compatibility, helping you confirm fit and ratings before you order.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 90 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 4-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy the 4-pole design matters\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eThe four-pole configuration supports multi-conductor protection in complex electrical environments, enabling coordinated disconnection of multiple conductors when protection is triggered.\u003c\/li\u003e \u003cli\u003e90 A provides robust protection for mid-size branch circuits and feeders without excessive nuisance trips, helping maintain system uptime.\u003c\/li\u003e \u003cli\u003e600 V compatibility covers a broad range of industrial and commercial distribution schemes, allowing for flexible integration in various panels.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eFitment and compatibility\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, verify that the HFD4090L matches your panel’s requirements. The part number is the most reliable reference for compatibility, ensuring you align with your bus arrangement, trip characteristics, and mounting layout.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance: replace aging or failed breakers without altering the panel design.\u003c\/li\u003e \u003cli\u003eRetrofit: upgrade legacy Eaton installations to preserve protection levels while modernizing components.\u003c\/li\u003e \u003cli\u003eReplacement: perform like-for-like replacements to restore original protection and coordination in existing systems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and handling tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePower down equipment and discharge stored energy before handling any circuit breaker.\u003c\/li\u003e \u003cli\u003eConsult your panel documentation to confirm mounting orientation and trip characteristics.\u003c\/li\u003e \u003cli\u003eInspect terminals and load connections for signs of wear or damage prior to installation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoosing the Eaton HFD4090L means aligning with Eaton’s protection philosophy—ensuring consistent trip behavior, reliable operation, and smooth integration into your existing electrical infrastructure. It’s a practical, like-for-like solution when you need to restore performance and maintain coordination in your system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":46426467270818,"sku":"HFD4090L","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-hfd4090l-circuit-breaker-90a-4-pole-600v-193.webp?v=1789583081","url":"https:\/\/www.ampstate.com\/products\/eaton-hfd4090l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}