{"product_id":"eaton-hmcp400r5-400a-600v-3-pole-circuit-breaker","title":"Eaton HMCP400R5 - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Eaton HMCP400R5 — a 400 A, 600 V, 3-pole molded case circuit breaker built for dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters.\u003c\/p\u003e \u003ch3\u003eWhere this breaker shines\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded-case design\u003c\/strong\u003e maximizes panel space without sacrificing protection, allowing efficient layouts in both new installations and panel upgrades.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection performance for both overloads and high-current fault events, reducing nuisance trips and improving system reliability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-ready compatibility\u003c\/strong\u003e ensures seamless substitution with matching Eaton and OEM loadcenters and panelboards, simplifying maintenance and stocking.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e400 A at 600 V\u003c\/strong\u003e capability suits a wide range of distribution needs, from residential feeders to light commercial and small industrial applications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat it protects and how it helps\u003c\/h3\u003e\n\u003cp\u003eThe HMCP400R5 provides robust branch circuit protection by interrupting fault currents to prevent damage to wiring and equipment. The combined thermal and magnetic tripping mechanism responds appropriately to both sustained overloads and severe fault conditions, helping you maintain safe, code-compliant electrical distribution.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading panelboards or loadcenters that require a reliable 3-pole, 400 A main or feeder breaker\u003c\/li\u003e \u003cli\u003eResidential subpanels, small to mid-size commercial spaces, and light-industrial installations needing dependable 3-phase protection\u003c\/li\u003e \u003cli\u003eReplacing aging or worn breakers to restore consistent protection and panel performance\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Eaton\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eModel\/Part:\u003c\/strong\u003e HMCP400R5\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eAvailable from AmpState, this breaker is designed to align with Eaton’s OEM loadcenters for straightforward replacement, inventory simplicity, and dependable performance. With its compact profile and proven thermal-magnetic protection, the HMCP400R5 helps you maximize panel capacity while delivering predictable, long-lasting protection for your electrical distribution system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349611794594,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton_breaker_and_panels_c2e55325-896a-4057-b055-2c3774abe1e0.png?v=1764151300","url":"https:\/\/www.ampstate.com\/products\/eaton-hmcp400r5-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}