{"product_id":"eaton-kd3400w-circuit-breaker","title":"Eaton | KD3400W | Circuit Breaker | 400A | 3-Pole","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Eaton \u003cstrong\u003eKD3400W\u003c\/strong\u003e Circuit Breaker — a robust solution engineered for heavy-duty power protection. With a \u003cstrong\u003e400A\u003c\/strong\u003e rating and arranged as a \u003cstrong\u003e3-pole\u003c\/strong\u003e device, it’s designed to handle demanding three‑phase applications in commercial and industrial panels while safeguarding critical equipment and wiring.\u003c\/p\u003e \u003cp\u003eThis breaker is purpose-built for maintenance, retrofit, and replacement projects where exact compatibility matters. The \u003cstrong\u003eKD3400W\u003c\/strong\u003e part number is the best reference to ensure a correct fit within Eaton’s panel lineup, making it easier to preserve system integrity during upgrades or service work.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e400A protection\u003c\/strong\u003e suitable for high‑current feeders and three‑phase circuits, helping prevent overcurrent damage to wiring and equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3‑pole design\u003c\/strong\u003e protects all three hot conductors in a three‑phase system with a single device, simplifying installation and reliability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExact compatibility cue\u003c\/strong\u003e use the KD3400W part number as the primary reference to confirm fit and ratings before ordering.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e ideal for routine maintenance, retrofit projects, or replacement in panels that require Eaton protection devices.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacing worn or obsolete breakers in three‑phase Eaton panels that specify a 400A, 3‑pole unit.\u003c\/li\u003e \u003cli\u003eRetrofits or upgrades where maintaining panel consistency and compatibility is essential for safe, reliable operation.\u003c\/li\u003e \u003cli\u003eProtection for large motors, feeders, and distribution buses within industrial or commercial electrical systems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and installation tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eBefore ordering, confirm fit and ratings by cross‑checking the KD3400W part number against your panel documentation.\u003c\/li\u003e \u003cli\u003eEnsure a licensed electrician handles mounting, wiring, and testing to align with panel bus type and electrical requirements.\u003c\/li\u003e \u003cli\u003eKeep a spare KD3400W on hand in a dry, accessible location and clearly label it for quick maintenance interventions.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChosen for reliability within Eaton’s ecosystem, the \u003cstrong\u003eKD3400W\u003c\/strong\u003e delivers confident protection for high‑current, three‑phase applications. It’s the practical, standards‑aligned choice when you need precise compatibility, straightforward installation, and durable performance in demanding environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":46427391361186,"sku":"KD3400W","price":8569.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/eaton-kd3400w-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}