{"product_id":"eaton-cutler-hammer-3t402k-400a-3p-circuit-breaker","title":"Eaton Cutler-Hammer 3T402K 400A 3P Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Eaton Cutler-Hammer 3T402K 400A 3P circuit breaker is built for dependable, everyday electrical protection in panelboards, load centers, and distribution networks. Designed for three-phase systems, this 3-pole breaker helps safeguard critical equipment and power distribution with precision and reliability.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3 (3P)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 3T402K\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Eaton Cutler-Hammer\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eKey differentiators\u003c\/strong\u003e — this 3T402K model is purpose-built to align with Eaton’s original BOM, making it the go-to choice for replacement projects where compatibility with existing gear matters most. By maintaining BOM fidelity, you reduce installation guesswork and stay consistent with your electrical distribution design.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eIdeal for replacements and stock management\u003c\/strong\u003e — when a 400A, three-pole unit fails or reaches end-of-life, this breaker slots into compatible Eaton panelboards and load centers without forcing a redesign. It’s also an excellent spare to keep on hand to minimize downtime during maintenance windows.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePractical use cases\u003c\/strong\u003e:\n\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReplacing a worn or damaged 3P 400A breaker in commercial or industrial panels\u003c\/li\u003e \u003cli\u003eMaintaining BOM integrity by using the exact original part number in upgrades or repairs\u003c\/li\u003e \u003cli\u003eEnsuring consistent three-phase protection for electrical distribution networks\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eAvailable from AmpState, the 3T402K is ready to support your electrical distribution needs. If you’re unsure about compatibility or the exact match for your panel, send us a message and we’ll help confirm fit and ensure you choose the right Eaton Cutler-Hammer breaker for your system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46411101044898,"sku":"3T402K","price":408.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-cutler-hammer-3t402k-400a-3p-circuit-breaker-ampstate-breakers-929.webp?v=1789014486","url":"https:\/\/www.ampstate.com\/products\/eaton-cutler-hammer-3t402k-400a-3p-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}