{"product_id":"eaton-kdb3400x-400a-600v-3-pole-circuit-breaker","title":"Eaton KDB3400X - 400 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eEaton KDB3400X\u003c\/strong\u003e is a 400 A, 600 V, 3-pole molded case circuit breaker engineered to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built for robust performance in demanding electrical environments, this unit helps protect wiring and equipment while keeping installations compact and organized.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCompact molded case design\u003c\/strong\u003e maximizes panel space without sacrificing protection, making it ideal for modern loadcenter layouts.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection against both overloads and short circuits, helping to limit damage and downtime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole configuration\u003c\/strong\u003e supports balanced protection for three-phase circuits, suitable for wider commercial and light industrial applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-current, high-voltage rating\u003c\/strong\u003e at 400 A and 600 V, enabling it to handle demanding branch circuits in a single, reliable device.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e designed to work seamlessly with matching Eaton OEM loadcenters and panelboards, simplifying installation and future maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile installation scope\u003c\/strong\u003e suitable for residential, commercial, and light industrial environments where dependable short-circuit protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Eaton\u003c\/li\u003e \u003cli\u003ePart number: KDB3400X\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage rating: 400 A\u003c\/li\u003e \u003cli\u003eVoltage rating: 600 V\u003c\/li\u003e \u003cli\u003ePoles: 3\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical use cases and scenarios\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eIn residential panels, it protects feeders and circuit branches with reliable trip performance in fault conditions.\u003c\/li\u003e \u003cli\u003eIn commercial suites, it safeguards lighting and receptacle circuits, helping minimize disruption from electrical faults.\u003c\/li\u003e \u003cli\u003eIn light industrial settings, it provides robust protection for motor and control circuits within panelboards and switchgear assemblies.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy choose the KDB3400X\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eTrustworthy protection that aligns with Eaton’s ecosystem of panelboards and loadcenters, reducing compatibility concerns during upgrades or replacements.\u003c\/li\u003e \u003cli\u003eA single, high-capacity 3-pole solution that simplifies panel design for three-phase systems while delivering precise overcurrent protection.\u003c\/li\u003e \u003cli\u003eClear, practical compatibility and installation benefits for both installers and facility managers seeking long-term reliability.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUpgrade or install with confidence using the Eaton KDB3400X 400 A, 600 V, 3-pole molded case circuit breaker—a purpose-built solution for safe, efficient, and compliant electrical protection across residential, commercial, and light industrial applications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349628997794,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-kdb3400x-400-a-600-v-3-pole-circuit-breaker-ampstate-breakers-114.webp?v=1788695755","url":"https:\/\/www.ampstate.com\/products\/eaton-kdb3400x-400a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}