{"product_id":"eaton-hmcp400f5w-400a-600v-3-pole-circuit-breaker","title":"Eaton HMCP400F5W - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Eaton HMCP400F5W delivers dependable protection for high-current branch circuits in panelboards and load centers. With a 400 A rating and a 600 V capacity, this 3-pole molded case circuit breaker is designed to handle demanding residential, commercial, and light industrial environments while preserving panel space and system reliability.\u003c\/p\u003e \u003ch2\u003eWhy the HMCP400F5W stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design\u003c\/strong\u003e optimizes panel space, making it easier to fit high-capacity protection in tighter electrical rooms and compact enclosures.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection by smoothly reacting to both overload currents and short-circuit events, helping to minimize nuisance trips and improve system uptime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible reliability\u003c\/strong\u003e is built to pair with matching Eaton OEM load centers and panelboards, enabling straightforward installation, maintenance, and future upgrades without compatibility concerns.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-current, versatile protection\u003c\/strong\u003e for branch circuits up to 400 A at 600 V, suitable for demanding distribution setups in a variety of settings.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIdeal for multiple sectors\u003c\/strong\u003e—residential, commercial, and light industrial applications benefit from robust protection and streamlined panel layouts.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhat it is and how it works\u003c\/h2\u003e\n\u003cp\u003eThe HMCP400F5W is a 3-pole molded case circuit breaker engineered to provide branch circuit overcurrent protection as well as short-circuit protection. Its thermal-magnetic trip mechanism combines reliable overload protection with rapid response to high-energy faults, helping protect wiring, devices, and the overall electrical system from damage and downtime.\u003c\/p\u003e \u003ch2\u003ePractical use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eMain distribution protection in commercial panelboards where high-current feeders require reliable, space-efficient breakers.\u003c\/li\u003e \u003cli\u003eRetrofit installations in existing load centers that demand an Eaton-compatible, high-amperage solution with consistent trip characteristics.\u003c\/li\u003e \u003cli\u003eResidential-commercial hybrids or small industrial setups where a 400 A, 3-pole device provides essential protection without oversized gear.\u003c\/li\u003e \u003cli\u003eNew construction where compact form factors help maximize panel density without compromising protection standards.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eSpecifications at a glance\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 HMCP400F5W\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 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3\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\u003eInstallation and compatibility tips\u003c\/h2\u003e\n\u003cp\u003eTo maximize performance and reliability, pair the HMCP400F5W with matching Eaton OEM load centers and panelboards designed for molded case breakers. Before installation, verify that the panel’s rating and bus configuration align with the 400 A, 600 V, 3-pole specifications. Regularly inspect for secure connections and ensure the breaker’s trip unit remains within rated operating conditions for consistent protection across varying temperatures and loads.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349610746018,"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_029d3058-1733-4191-998c-7acf89ac42b4.png?v=1764151260","url":"https:\/\/www.ampstate.com\/products\/eaton-hmcp400f5w-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}