{"product_id":"eaton-hfd4040l-circuit-breaker","title":"Eaton | HFD4040L | Circuit Breaker | 40A | 4-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Eaton HFD4040L Circuit Breaker — a robust 40A, 4-pole device rated for up to 600V, designed for dependable isolation and protection in demanding electrical systems.\u003c\/p\u003e \u003cp\u003eBuilt for maintenance, retrofit, and replacement, this part plays a critical role in safeguarding equipment and keeping panels compliant and safe. The HFD4040L is Eaton's trusted reference for compatibility when you need a precise match to existing infrastructure.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 40A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 4-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReference:\u003c\/strong\u003e Part number HFD4040L is the best compatibility reference\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Maintenance, retrofit, replacement in compatible electrical panels and distributions\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this 4-pole design matters\u003c\/h3\u003e\n\u003cp\u003eIn three-phase systems that require full disconnection of all conductors, a 4-pole breaker provides simultaneous isolation of each line. This helps meet safety standards, simplifies maintenance, and minimizes fault propagation during trips in industrial and commercial power distributions.\u003c\/p\u003e \u003ch3\u003eUnique value you won’t get from generic replacements\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eOfficial Eaton part — designed to align with Eaton panels and distribution boards, reducing fit issues and downtime.\u003c\/li\u003e \u003cli\u003eClear compatibility reference — use the HFD4040L part number to verify you’re ordering the exact replacement for your current setup.\u003c\/li\u003e \u003cli\u003eFocused for 600V systems — provides appropriate protection for higher voltage environments common in industrial applications.\u003c\/li\u003e \u003cli\u003e Retrofit-friendly for maintenance schedules — a straightforward swap that supports ongoing reliability without major panel changes.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eUse cases and ideal fit\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacing worn or tripped breakers in 600V, multi-pole distribution panels.\u003c\/li\u003e \u003cli\u003eRetrofits where a 4-pole 40A specification is required to support new equipment with four conductors.\u003c\/li\u003e \u003cli\u003eUpgrade projects in facilities that standardize on Eaton components to streamline parts management.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eBefore ordering, confirm fit and ratings against your panel's specification. The HFD4040L is the most reliable reference for compatibility, ensuring you get the correct breaker for safe, compliant operation.\u003c\/p\u003e \u003cp\u003eNote: For proper installation, engage a qualified electrician, power down the equipment, and follow all local electrical codes. This description provides product insights to help you evaluate suitability and plan a maintenance or retrofit project with confidence.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":46427389362338,"sku":"HFD4040L","price":9781.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/eaton-hfd4040l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}