{"product_id":"eaton-hmcp400w5w-circuit-breaker","title":"Eaton | HMCP400W5W | Circuit Breaker | 400A | 3-Pole | 600V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eEaton HMCP400W5W Circuit Breaker\u003c\/strong\u003e delivers reliable overload and fault protection for demanding electrical systems. With a robust 400A rating, 3-pole configuration, and 600V capacity, this bolt-on breaker is purpose-built for retrofit, maintenance, and replacement projects where exact specifications are essential.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference:\u003c\/strong\u003e HMCP400W5W\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this breaker is a smart choice\u003c\/h3\u003e\n\u003cp\u003eDesigned for professional maintenance and retrofit work, the HMCP400W5W ensures you maintain the exact protection levels your system requires. The bolt-on mounting provides a secure, vibration-resistant connection—ideal for industrial environments and panelboards where reliability can’t be compromised. Rely on the same Eaton engineering lineage that supports continuity of service in critical power distribution setups.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofit projects to upgrade or restore protection in existing Eaton panels or compatible systems\u003c\/li\u003e \u003cli\u003eReplacement for a failed 400A, 3-pole, 600V circuit breaker in service entrances and distribution panels\u003c\/li\u003e \u003cli\u003eMaintenance planning for industrial facilities where precise amperage and voltage ratings are required\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat problems this breaker solves\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eProvides a clear, defined protection boundary for circuits carrying up to 400A\u003c\/li\u003e \u003cli\u003eEnsures reliable tripping behavior in 600V distribution networks, helping prevent equipment damage\u003c\/li\u003e \u003cli\u003eSupports quick field replacement with a matching part number reference to minimize downtime\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eFit, compatibility, and practical tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAlways confirm fit and ratings before ordering. The HMCP400W5W part number is the best reference for compatibility with your panel or enclosure\u003c\/li\u003e \u003cli\u003eUse in bolt-on mounting configurations to ensure a secure, durable connection in demanding environments\u003c\/li\u003e \u003cli\u003eWhen planning a retrofit or replacement, verify that the existing panel supports a 400A, 3-pole, 600V breaker of bolt-on design\u003c\/li\u003e \u003cli\u003eFollow manufacturer instructions for installation and torque guidelines to maintain safe, reliable operation\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eChoosing Eaton over generic options\u003c\/h3\u003e\n\u003cp\u003eUnlike generic substitutes, this breaker is built to align with Eaton’s engineering standards and the specific mounting and electrical characteristics of compatible panels. The bolt-on design offers a sturdier attachment in locations subject to vibration or frequent panel access, while the 400A\/3-pole\/600V ratings match high-demand distribution needs without overcomplicating the upgrade path.\u003c\/p\u003e \u003cp\u003eTake action with the Eaton HMCP400W5W when you need a precise, compatible solution for maintenance, retrofit, or replacement within your 400A, 3-pole, 600V circuit protection strategy.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":46424410423458,"sku":"HMCP400W5W","price":4664.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/eaton-hmcp400w5w-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}