{"product_id":"eaton-kdc3400c-400a-600v-3-pole-circuit-breaker","title":"Eaton KDC3400C - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Eaton KDC3400C is a 400 A, 600 V, 3-pole molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. From AmpState, this device pairs Eaton’s trusted reliability with a compact form that preserves valuable panel space while delivering precise protection for 3-phase systems.\u003c\/p\u003e \u003ch2\u003eWhy the Eaton KDC3400C stands out\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design\u003c\/strong\u003e maximizes usable space in panelboards and loadcenters, making it easier to fit into layouts with limited clearance or crowded electrical rooms.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by combining overload (thermal) sensing with instantaneous short-circuit protection (magnetic), helping to prevent nuisance trips while safeguarding equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole configuration\u003c\/strong\u003e suits 3-phase systems common in commercial and light industrial environments, providing coordinated protection across all phases.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e designed to work with matching Eaton panelboards and loadcenters, ensuring proper fit, electrical coordination, and straightforward replacement when upgrading or maintaining panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suitable for residential, commercial, and light industrial settings where reliable protection and space efficiency matter.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eTechnical snapshot\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Eaton\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e KDC3400C\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of poles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eMain or feeder protection in 3-phase commercial panels where space is at a premium and robust short-circuit protection is required.\u003c\/li\u003e \u003cli\u003eReplacement or upgrade in existing Eaton panelboards and loadcenters to maintain consistent protection characteristics with the surrounding system.\u003c\/li\u003e \u003cli\u003eSmall-to-midsize industrial electrical rooms that demand reliable, trip-coordinated performance across all three phases.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003ePractical considerations and tips\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eMatch the KDC3400C with the corresponding OEM loadcenter or panelboard to preserve protection coordination and ease of maintenance.\u003c\/li\u003e \u003cli\u003eLeverage the thermal-magnetic trip’s fast response to limit fault currents and reduce cascading damage in energized electrical setups.\u003c\/li\u003e \u003cli\u003eWhen planning installations, verify that the 400 A rating aligns with your panel’s bus rating and conductor sizing to ensure safe and compliant operation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349630800034,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-kdc3400c-400-a-600-v-3-pole-circuit-breaker-ampstate-breakers-304.webp?v=1788696036","url":"https:\/\/www.ampstate.com\/products\/eaton-kdc3400c-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}