{"product_id":"eaton-400a-3p-circuit-breaker","title":"Eaton Circuit Breaker, 400A, 3-Pole","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eEaton Circuit Breaker, 400A, 3-Pole\u003c\/strong\u003e is a rugged, industrial-grade protection device designed to safeguard demanding electrical systems. Built to integrate with the Eaton series, this breaker is the reliable choice for service, maintenance, and replacement projects where overcurrent protection matters most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole design\u003c\/strong\u003e provides synchronized protection across all phases, simplifying wiring and ensuring coordinated shutdown in 3-phase circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e400 A rating\u003c\/strong\u003e supports heavy-duty feeders and main service disconnects, helping minimize downtime when faults occur.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEaton compatibility\u003c\/strong\u003e is ensured within the Eaton family of breakers, provided the exact part number matches your panel or application requirements.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart-number driven fit\u003c\/strong\u003e—verify compatibility by part number and application needs. If you’re unsure, \u003cem\u003emessage us\u003c\/em\u003e and we’ll help verify the correct fit for your installation.\u003c\/li\u003e \u003cli\u003eIdeal for \u003cstrong\u003eindustrial environments\u003c\/strong\u003e and replacement projects, delivering dependable protection during ongoing operations and planned upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhere it shines in the field:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eMain service disconnects in manufacturing facilities, distribution centers, and large commercial applications.\u003c\/li\u003e \u003cli\u003eRetrofits and replacements in Eaton-panel ecosystems, ensuring seamless integration with existing equipment.\u003c\/li\u003e \u003cli\u003eProtection for 3-phase feeders and critical equipment in process lines, warehouses, and infrastructure projects.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters for your operation:\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSmart compatibility path\u003c\/strong\u003e—aligns with your current Eaton panels when the part number matches, reducing guesswork during procurement.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOperational reliability\u003c\/strong\u003e—stocking a compatible 400A 3-Pole breaker minimizes downtime and accelerates maintenance cycles.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTrustworthy support\u003c\/strong\u003e—clear guidance on part-number validation and application fit ensures safety and performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eNotes: Verify fit by part number and application requirements. Need help matching a part number or confirming compatibility? \u003cem\u003eMessage us\u003c\/em\u003e and we’ll assist with a precise compatibility check.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46414742487202,"sku":null,"price":460.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-circuit-breaker-400a-3-pole-breakers-731.webp?v=1789147274","url":"https:\/\/www.ampstate.com\/products\/eaton-400a-3p-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}