{"product_id":"eaton-hmcp400y5x-400a-600v-3-pole-circuit-breaker","title":"Eaton HMCP400Y5X - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003ePowerful protection for panelboards and loadcenters in demanding environments—the Eaton HMCP400Y5X is a 400 A, 600 V, 3-pole molded case circuit breaker built to keep critical circuits safe. Whether wiring a residential subpanel, a commercial distribution board, or light industrial panels, this unit delivers reliable, code-aligned protection when it matters most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design\u003c\/strong\u003e—minimizes footprint to maximize panel space and allow clean, organized installations in dense panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e—provides stable, repeatable protection against both overloads and short-circuits with fast, predictable tripping, reducing nuisance trips and equipment damage.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e400 A, 600 V, 3-pole configuration\u003c\/strong\u003e—handles three-phase feeders and large branch circuits with a single, rugged device designed for heavy-duty service.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e—designed to pair with matching Eaton OEM loadcenters and panelboards, ensuring proper fit, listing, and straightforward installation without compatibility headaches.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile across settings\u003c\/strong\u003e—suitable for residential, commercial, and light industrial applications, from apartment buildings to small manufacturing or data-collection environments, where stable protection is critical.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIn practice, the HMCP400Y5X shines when you need a high-current solution that does not consume valuable panel space. The 3-pole design is ideal for three-phase systems common in commercial and industrial projects, reducing the number of devices inside the panel and simplifying wiring. The thermal-magnetic trip unit gives you deterministic behavior—overcurrent protection that trips on genuine overloads while resisting nuisance trips from normal inrush currents, thanks to its designed trip curve.\u003c\/p\u003e \u003ch3\u003eTechnical specifications\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Eaton\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e HMCP400Y5X\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\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349612581026,"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_bdeb9694-3971-40d8-90d6-87d891008e7b.png?v=1764151330","url":"https:\/\/www.ampstate.com\/products\/eaton-hmcp400y5x-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}