{"product_id":"eaton-kdb3400y-400a-600v-3-pole-circuit-breaker","title":"Eaton KDB3400Y - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003ch2\u003eEaton KDB3400Y: 400A, 600V, 3-Pole Molded Case Circuit Breaker\u003c\/h2\u003e\n\u003cp\u003eThe Eaton KDB3400Y is a rugged 400A, 600V, 3-pole molded case circuit breaker engineered to deliver dependable branch circuit protection for panelboards and loadcenters. Its compact design helps you maximize panel space without compromising protection, making it an ideal choice for residential, commercial, and light industrial installations.\u003c\/p\u003e \u003ch3\u003eWhy the KDB3400Y stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSpace-saving molded case design:\u003c\/strong\u003e Specifically crafted to make efficient use of panel space, so you can fit more circuits in a clean, organized enclosure.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit:\u003c\/strong\u003e Provides stable, repeatable protection with fast magnetic response to short circuits, reducing the risk of damage to downstream equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-ready compatibility:\u003c\/strong\u003e Designed to pair with matching Eaton OEM load centers and panelboards for a straightforward, reliable replacement or retrofit.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile across sectors:\u003c\/strong\u003e Suitable for a range of applications—from home electrical panels to commercial spaces and light industrial setups—where robust overcurrent and short-circuit protection is required.\u003c\/li\u003e\n\u003c\/ul\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 KDB3400Y\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 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 600V\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 \u003ch3\u003eReal-world use cases\u003c\/h3\u003e\n\u003cp\u003eUse the KDB3400Y in main distribution panels or subpanels where a 400A, 3-pole solution is required. It’s well-suited for three-phase service environments or multi-branch configurations in commercial spaces, light industrial equipment rooms, or large residential installations where reliable protection and compact panel integration matter most.\u003c\/p\u003e \u003ch3\u003eWhat this means for you\u003c\/h3\u003e\n\u003cp\u003eChoosing the Eaton KDB3400Y means investing in a proven protection mechanism that balances panel efficiency with robust safety. The thermal-magnetic trip provides predictable performance during overloads and instantaneous response to short circuits, helping safeguard wiring, devices, and downstream equipment while keeping installation straightforward and compliant with compatible panelboards.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349629030562,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-kdb3400y-400-a-600-v-3-pole-circuit-breaker-ampstate-breakers-653.webp?v=1788695763","url":"https:\/\/www.ampstate.com\/products\/eaton-kdb3400y-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}