{"product_id":"eaton-hmcp400a5-400a-600v-3-pole-circuit-breaker","title":"Eaton HMCP400A5 - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Eaton HMCP400A5 — a 400 A, 600 V, 3-pole molded case circuit breaker engineered for reliable branch circuit protection in panelboards and loadcenters. Built to withstand the demands of modern electrical systems, this breaker delivers consistent performance where it matters most: protecting wiring, devices, and occupants from overcurrent and short circuits.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy this breaker stands out\u003c\/strong\u003e\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSpace-efficient design\u003c\/strong\u003e: The compact molded case form saves panel space, making it easier to fit into tight electrical enclosures without compromising protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e: Combines thermal sensing for gradual overload protection with magnetic trip action for immediate response to short circuits, delivering stable, repeatable protection across a wide range of loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e: Designed to pair seamlessly with matching Eaton OEM loadcenters and panelboards, ensuring reliable fit, wiring continuity, and straightforward replacement.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile for multiple sectors\u003c\/strong\u003e: Suitable for residential, commercial, and light industrial applications where robust branch circuit protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eManufacturer: Eaton\u003c\/li\u003e \u003cli\u003ePart Number: HMCP400A5\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\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e \u003cp\u003eEfficiently protect feeder circuits in commercial panelboards housing HVAC drives, lighting power, or auxiliary loads. In residential settings, use this 3-pole unit where a three-phase supply or multi-wire branch protection is required in a compliant panel. In light industrial environments, it provides dependable protection for circuits with higher inrush or motor loads while maintaining panel density.\u003c\/p\u003e \u003ch3\u003ePractical benefits and outcomes\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eReduces nuisance trips by balancing thermal sensitivity with rapid magnetic response for short circuits.\u003c\/li\u003e \u003cli\u003eSupports safer, more predictable maintenance cycles thanks to a reliable trip mechanism and Eaton’s durability standards.\u003c\/li\u003e \u003cli\u003eMinimizes panel modification needs due to OEM compatibility, aiding quick upgrades and replacements in existing installations.\u003c\/li\u003e \u003cli\u003eHelps ensure compliance with electrical design intent for both new builds and retrofits in varied environments.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility tips\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eAlways pair the HMCP400A5 with a compatible Eaton panelboard or loadcenter to guarantee full electrical and mechanical compatibility.\u003c\/li\u003e \u003cli\u003eFollow the manufacturer’s installation instructions for enclosure mounting, wiring, and trip settings to maximize reliability.\u003c\/li\u003e \u003cli\u003eVerify that the circuit’s load profile aligns with a 400 A, 600 V, 3-pole protection scheme to avoid unnecessary disconnections during normal operation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether upgrading an aging panel, expanding a commercial electrical system, or supporting a robust light-industrial layout, the Eaton HMCP400A5 delivers precise protection, durable construction, and seamless compatibility. Invest in a trusted solution that keeps power flowing safely in demanding environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349610287266,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-hmcp400a5-400-a-600-v-3-pole-circuit-breaker-ampstate-breakers-389.webp?v=1788691478","url":"https:\/\/www.ampstate.com\/products\/eaton-hmcp400a5-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}