{"product_id":"eaton-hmcp400d5y-400a-600v-3-pole-circuit-breaker","title":"Eaton HMCP400D5Y - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Eaton HMCP400D5Y is a 400 A, 600 V, 3-pole molded-case circuit breaker purpose-built to protect branch circuits in panelboards and loadcenters. Available through AmpState, this device is designed to deliver dependable overcurrent and short-circuit protection while fitting neatly into Eaton’s OEM panel ecosystems.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded-case design\u003c\/strong\u003e optimizes panel space and reduces enclosure depth, enabling cleaner, more efficient panel layouts in residential, commercial, and light-industrial applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection by combining overload sensing with fast magnetic interruption for short circuits, helping to prevent damage and downtime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e400 A at 600 V\u003c\/strong\u003e rating handles substantial feeders and large branch circuits without sacrificing performance or reliability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole configuration\u003c\/strong\u003e supports three-phase systems and balanced protection, with coordinated trip behavior across all poles for safer, more predictable operation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM loadcenter compatibility\u003c\/strong\u003e designed to pair with matching Eaton panels and other OEM loadcenters for straightforward installation and streamlined serviceability.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis breaker is ideal for electrical professionals tasked with upgrading or expanding electrical infrastructure in homes, commercial spaces, and light industrial facilities. It delivers a robust protection solution that pairs tightly with Eaton panelboards, helping ensure protective coordination, easier maintenance, and fewer unexpected trips in demanding environments.\u003c\/p\u003e \u003ch3\u003eWhy this 3-pole molded-case breaker stands out\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePrecise protection\u003c\/strong\u003e the thermal-magnetic mechanism delivers a reliable response to both sustained overloads and instantaneous short circuits, reducing wear on conductors and downstream equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSpace-efficient reliability\u003c\/strong\u003e its compact design frees up panel space while maintaining strong electrical protection for critical feeders.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSeamless system integration\u003c\/strong\u003e engineered to work with Eaton’s OEM loadcenters and compatible panelboards, simplifying stocking, ordering, and field service.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical overview\u003c\/strong\u003e\u003cbr\u003e\nManufacturer: Eaton\u003cbr\u003e\nPart number: HMCP400D5Y\u003cbr\u003e\nType: Thermal-magnetic molded-case circuit breaker\u003cbr\u003e\nAmperage rating: 400 A\u003cbr\u003e\nVoltage rating: 600 V\u003cbr\u003e\nPoles: 3\u003cbr\u003e\nApplication: Branch circuit overcurrent and short-circuit protection\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349610647714,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-hmcp400d5y-400-a-600-v-3-pole-circuit-breaker-ampstate-334.webp?v=1788691566","url":"https:\/\/www.ampstate.com\/products\/eaton-hmcp400d5y-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}