{"product_id":"eaton-hmcp400w5-400a-600v-3-pole-circuit-breaker","title":"Eaton HMCP400W5 - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Eaton HMCP400W5 is a robust 400 A, 600 V, 3-pole molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. With a compact molded-case footprint, it helps you maximize panel space without sacrificing protection performance. Its thermal-magnetic trip unit provides stable, repeatable protection across varying loads and ambient conditions, giving you peace of mind in demanding electrical environments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded-case design\u003c\/strong\u003e optimizes panel space and simplifies installation in dense panelboards and load centers.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers precise overload and short-circuit protection with predictable trip characteristics.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-ready compatibility\u003c\/strong\u003e designed to pair with matching Eaton OEM load centers and panelboards for seamless, plug‑in integration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile for multiple sectors\u003c\/strong\u003e suitable for residential, commercial, and light industrial electrical distributions where reliable protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \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\u003ePart number:\u003c\/strong\u003e HMCP400W5\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 \u003cp\u003eIdeal for three-phase power distribution in commercial buildings, light industrial electrical rooms, and service panels, the HMCP400W5 protects feeders and motor circuits up to 400 A from overloads and short circuits. Use it to safeguard HVAC feeders, large lighting runs, and other high-current branch circuits while maintaining clear alignment with Eaton panelboard ecosystems for straightforward replacement and maintenance.\u003c\/p\u003e \u003cp\u003eWhy this breaker stands out is not just its specs—it's how it fits into a practical electrical strategy. The 3-pole design supports balanced three-phase systems common in commercial and light industrial settings, while the 600 V rating supports higher-voltage distribution without compromising protection accuracy. When you need reliable, configurable protection that aligns with your existing Eaton infrastructure, the HMCP400W5 offers a cohesive, performance-driven solution.\u003c\/p\u003e \u003cp\u003ePractical installation and maintenance tips:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003ePair with compatible Eaton panelboards and load centers to ensure alignment of mounting, bus stabs, and trip characteristics.\u003c\/li\u003e \u003cli\u003eConfirm that the circuit’s current and voltage requirements stay within the 400 A and 600 V ratings to avoid nuisance trips or insufficient protection.\u003c\/li\u003e \u003cli\u003eDocument the part number HMCP400W5 in your panel schedules for clear maintenance records and future replacements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349612023970,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-hmcp400w5-400-a-600-v-3-pole-circuit-breaker-ampstate-breakers-205.webp?v=1788691878","url":"https:\/\/www.ampstate.com\/products\/eaton-hmcp400w5-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}