{"product_id":"eaton-hmcp400k5-400a-600v-3-pole-circuit-breaker","title":"Eaton HMCP400K5 - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eEaton HMCP400K5\u003c\/strong\u003e is a 400 A, 600 V, 3-pole molded case circuit breaker engineered for dependable branch circuit overcurrent and short‑circuit protection in panelboards and loadcenters.\u003c\/p\u003e \u003ch3\u003eCompact, panel-friendly design that fits where space matters\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded-case design\u003c\/strong\u003e maximizes panel space, making it easier to organize wiring and maintain clean, reliable distribution schemes.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole configuration\u003c\/strong\u003e supports three‑phase systems and common bus layouts, enabling efficient protection for modern electrical installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection, reducing nuisance trips and safeguarding conductors under varying loads and temperatures.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-loadcenter compatibility\u003c\/strong\u003e is designed to pair with matching Eaton panels and other OEM loadcenters and panelboards for straightforward installation and reliable performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this matters for your electrical system\u003c\/h3\u003e\n\u003cp\u003eProtecting feeders and branch circuits with precise, predictable trip behavior is essential in residential, commercial, and light industrial environments. The HMCP400K5’s thermal-magnetic mechanism responds quickly to overloads and short circuits, helping prevent damage to wiring and connected equipment while maintaining continuity of service where possible.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or expanding panelboards in small to mid‑sized commercial spaces where reliable 3‑phase protection is required.\u003c\/li\u003e \u003cli\u003eInstalling in new construction projects to provide robust main or branch protection for critical circuits.\u003c\/li\u003e \u003cli\u003eReplacing aging or mismatched breakers in residential or light industrial load centers to restore stable protection profiles.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAmperage rating: 400 A\u003c\/li\u003e \u003cli\u003eVoltage rating: 600 V\u003c\/li\u003e \u003cli\u003eNumber of poles: 3\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoosing the Eaton HMCP400K5 means aligning with a trusted protection solution designed to integrate smoothly with Eaton’s panelboard ecosystems and deliver dependable, long‑term performance for your electrical distribution needs.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349611237538,"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_5156d0df-f492-4f91-89c7-2725034aa05b.png?v=1764151277","url":"https:\/\/www.ampstate.com\/products\/eaton-hmcp400k5-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}