{"product_id":"westinghouse-kdb3400-400a-3p-600v-circuit-breaker","title":"Westinghouse KDB3400 400A 3P 600V Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Westinghouse KDB3400 400A 3P 600V Circuit Breaker — a reliable cornerstone for panelboards, load centers, and distributed electrical systems. Built for everyday electrical work, this unit is designed to slot into original Westinghouse installations, helping you keep the BOM aligned with the exact part number for smooth replacements and maintenance.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design\u003c\/strong\u003e provides balanced protection for three-phase circuits, supporting robust distribution in commercial and industrial setups.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e400 A rating\u003c\/strong\u003e delivers strong protection for high-demand branch circuits and feeders, helping prevent overloads and unplanned downtime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600V maximum rating\u003c\/strong\u003e suits a wide range of commercial and industrial electrical systems, offering dependable performance across typical installation voltages.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReplacement-ready and BOM-friendly\u003c\/strong\u003e ideal for refurbishment projects or stocking spares that match the original part number exactly.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile fit\u003c\/strong\u003e designed for use in panelboards, load centers, and distribution panels that accommodate Westinghouse KDB3400 units; compatible with established electrical layouts to simplify upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eNeed help matching a part number or confirming compatibility? Message us and we’ll help you confirm the fit before you buy.\u003c\/p\u003e \u003ch3\u003eIdeal uses and scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacing aging breakers in commercial panelboards or industrial load centers to restore reliable protection.\u003c\/li\u003e \u003cli\u003eStocking a spare that aligns with the original BOM, reducing downtime during maintenance or upgrades.\u003c\/li\u003e \u003cli\u003eUpgrading three-phase distribution in facilities with high electrical demand, where a 400 A, 3-pole, 600 V solution is appropriate.\u003c\/li\u003e \u003cli\u003eApplying a trusted Westinghouse component in new installations that require a proven, standards-aligned 3P 600V breaker.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eProduct specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Westinghouse\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e KDB3400\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e AmpState\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eSecure the protection your three-phase system depends on with the Westinghouse KDB3400 — a purpose-built, BOM-aligned solution available from AmpState to keep your electrical distribution running smoothly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46410971283618,"sku":"KDB3400","price":8133.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_83963f7f-600e-419f-90c6-e7677089642b.png?v=1765492973","url":"https:\/\/www.ampstate.com\/products\/westinghouse-kdb3400-400a-3p-600v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}