{"product_id":"eaton-kdb3400c-400a-600v-3-pole-circuit-breaker","title":"Eaton KDB3400C - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Eaton KDB3400C — a 400 A, 600 V, 3-pole molded case circuit breaker designed to protect panelboards and loadcenters from overcurrent and short circuits. Built for three-phase systems, this unit delivers dependable, site-ready protection where it matters most in residential, commercial, and light industrial settings.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eEfficient panel use\u003c\/strong\u003e — The compact molded case design helps maximize available space inside panels, making it easier to organize wiring and fit protective devices without crowding the enclosure.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eStable protection you can rely on\u003c\/strong\u003e — The thermal-magnetic trip unit provides stable, repeatable protection performance, balancing fast response to short circuits with reduced nuisance trips during normal load variations.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eDesigned for seamless integration\u003c\/strong\u003e — Compatible with matching OEM loadcenters and panelboards, the KDB3400C simplifies replacement, maintenance, and future upgrades across existing systems.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eIdeal for a range of applications\u003c\/strong\u003e — This 3-pole breaker is well-suited for three-phase distribution in residential projects with higher protection needs, commercial spaces, and light industrial environments where robust branch-circuit protection is essential.\u003c\/p\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\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 KDB3400C\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 \u003cp\u003eIn practice, the Eaton KDB3400C helps you protect critical circuits—from feeders to equipment motors—without sacrificing panel layout or serviceability. Its combination of compact design, reliable trip logic, and OEM-compatible compatibility makes it a practical choice for electricians, facilities managers, and maintenance teams looking to maintain safe, efficient electrical protection across mixed-use buildings.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349628670114,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton_breaker_and_panels_7338b2a0-7262-47c9-80ac-bb87873eff32.png?v=1764151889","url":"https:\/\/www.ampstate.com\/products\/eaton-kdb3400c-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}