{"product_id":"eaton-hmcp400x5w-400a-600v-3-pole-bolt-on-circuit-breaker","title":"Eaton HMCP400X5W - 400 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Eaton HMCP400X5W — a robust 400 A, 600 V, 3-pole bolt-on molded case circuit breaker designed to safeguard your panels with precision. Engineered for dependable branch circuit overcurrent and short-circuit protection, this unit is built to perform in demanding residential, commercial, and light industrial environments.\u003c\/p\u003e \u003ch3\u003eKey advantages\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eSecure bolt-on mounting for a rigid, vibration-resistant bus connection that stays dependable even in demanding installations.\u003c\/li\u003e \u003cli\u003eThermal-magnetic trip unit delivers stable, repeatable protection performance across temperature variations and fault conditions.\u003c\/li\u003e \u003cli\u003eOEM-compatible with matching Eaton load centers and panelboards for a seamless, plug-and-protect installation.\u003c\/li\u003e \u003cli\u003eVersatile for residential, commercial, and light industrial applications where large branch circuits demand robust protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Eaton\u003c\/li\u003e \u003cli\u003ePart Number: HMCP400X5W\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\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\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cp\u003ePerfect for large residential service panels, commercial distribution boards, and light industrial panels where a single protective device must handle heavy-duty branch circuits. The bolt-on design simplifies retrofit work and ensures a solid connection to the panel’s bus bars, reducing motion-related wear and arcing risk over time.\u003c\/p\u003e \u003ch3\u003eWhy this matters\u003c\/h3\u003e\n\u003cp\u003eThe HMCP400X5W isn’t just a breaker—it’s a reliable guardian for your electrical system. Its thermal-magnetic characteristics help coordinate with other protective devices, minimizing nuisance trips while delivering fast, decisive action during faults. With 3 poles and a 600 V rating, it provides comprehensive protection for multi-phase circuits common in modern panel installations.\u003c\/p\u003e \u003ch3\u003ePractical tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify panel compatibility by selecting Eaton OEM family components to ensure optimal fit and electrical coordination.\u003c\/li\u003e \u003cli\u003eFollow the manufacturer’s torque specifications during bolt-on mounting to maintain a secure, vibration-resistant connection.\u003c\/li\u003e \u003cli\u003ePeriodically inspect lug connections and mounting integrity in environments with high current or vibration to maintain peak performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349612318882,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-hmcp400x5w-400-a-600-v-3-pole-bolt-on-circuit-breaker-235.webp?v=1788691940","url":"https:\/\/www.ampstate.com\/products\/eaton-hmcp400x5w-400a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}