{"product_id":"westinghouse-kl3400-circuit-breaker","title":"Westinghouse | KL3400 | Circuit Breaker | 400A | 3-Pole | 600V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eThe Westinghouse KL3400 Circuit Breaker delivers reliable protection for heavy-duty electrical distributions with a 400A, 3-pole setup rated at 600V. Designed for maintenance, retrofit, and replacement projects, this bolt-on breaker offers a straightforward path to upgrade or refresh aging panels without extensive rewiring.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 400A\u003c\/li\u003e \u003cli\u003ePoles: 3-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 600V\u003c\/li\u003e \u003cli\u003eMounting: Bolt-On\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy it matters\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eThree-pole design supports robust three-phase distribution, ideal for industrial and commercial applications requiring reliable power switching.\u003c\/li\u003e \u003cli\u003eBolt-On mounting provides a secure, field-service-friendly installation that minimizes panel modifications during retrofit or replacement.\u003c\/li\u003e \u003cli\u003ePart-number clarity: the KL3400 is the go-to reference for compatibility—use this to confirm a correct fit before ordering.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cp\u003eUse the Westinghouse KL3400 in panelboards and switchgear that require a 400A, 3-Pole, 600V bolt-on circuit breaker. It’s well suited for:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMaintenance of aging distribution panels where exact KL3400 specs match the existing setup.\u003c\/li\u003e \u003cli\u003eRetrofits that upgrade circuit protection without reconfiguring buswork.\u003c\/li\u003e \u003cli\u003eReplacement of failing breakers in compatible Westinghouse or similar panels that accept KL3400 form factor.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAlways confirm fit and ratings against your panel labeling before ordering. Use the part number KL3400 as the primary reference for compatibility.\u003c\/li\u003e \u003cli\u003eFollow standard electrical safety procedures during replacement or retrofit, and ensure the panel is de-energized during installation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat to expect in practice\u003c\/h3\u003e\n\u003cp\u003eWith the Westinghouse KL3400, technicians can perform efficient, field-ready replacements that restore reliable protection for critical equipment. The bolt-on design minimizes downtime and supports straightforward maintenance cycles, keeping industrial operations on track.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Westinghouse","offers":[{"title":"Default Title","offer_id":46424717885602,"sku":"KL3400","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/westinghouse-kl3400-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}