{"product_id":"westinghouse-la4k-circuit-breaker","title":"Westinghouse | LA4K | Circuit Breaker | 400A | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Westinghouse LA4K Circuit Breaker is a purpose-built solution for maintenance, retrofit, and replacement projects where exact compatibility matters. With a robust 400A rating at 600V, this LA4K part is designed to slot into existing systems that rely on Westinghouse’s proven design language and mounting patterns. The part number LA4K is your best reference for ensuring a seamless fit and reliable performance.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e LA4K\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Maintenance, retrofit, and replacement where matching specs are required\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote: Confirm fit and ratings before ordering. The part number is the best reference for compatibility with your panel or distribution gear.\u003c\/p\u003e \u003ch3\u003eWho this is for\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eElectrical maintenance technicians restoring aging equipment or upgrading safety margins\u003c\/li\u003e \u003cli\u003eContractors performing retrofit work to align with Westinghouse LA4K-compatible panels\u003c\/li\u003e \u003cli\u003eFacilities engineers replacing failed units in legacy systems that require this specific circuit-breaker form factor\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy the LA4K matters for your project\u003c\/h3\u003e\n\u003cp\u003eThis circuit breaker stands out because it’s built to align with existing Westinghouse installations, minimizing guesswork during replacements. By sticking with the LA4K part number, you ensure the correct mounting footprint, electrical characteristics, and compatibility with your bus bars and enclosure layout. In practical terms, that means \u003cstrong\u003efaster installations, reduced downtime,\u003c\/strong\u003e and less risk of misfit parts derailing a maintenance or retrofit schedule.\u003c\/p\u003e \u003ch3\u003eHow it works and when to use it\u003c\/h3\u003e\n\u003cp\u003eIn any 600V distribution environment, the LA4K 400A breaker serves as the protective switch that interrupts power when a fault occurs, helping prevent damage to equipment and reduce the risk of electrical hazards. Use it whenever you need a direct, compatible replacement that respects existing system architecture—whether you’re sequencing a retrofit, refreshing an aging panel, or stocking a dependable spare for critical infrastructure.\u003c\/p\u003e \u003ch3\u003ePractical tips for selection and installation\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eVerify fit first:\u003c\/strong\u003e Cross-check the equipment label or service data with the LA4K part number and its 400A\/600V ratings before purchase.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePlan for compatibility:\u003c\/strong\u003e This unit is intended for systems designed to accept the LA4K form factor. If in doubt, reference your panel’s documentation and use the part number as the primary compatibility check.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eHandle with care:\u003c\/strong\u003e As with all circuit breakers, store and install in a clean, dry environment and follow all safety procedures during de-energization and replacement.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProfessional installation:\u003c\/strong\u003e Ensure a qualified electrician performs installation, verifies proper torque at terminals, and confirms system voltages are safely isolated.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eEquip your fleet with the Westinghouse LA4K 400A\/600V circuit breaker for a reliable, straightforward path to maintenance-ready, retrofit-friendly electrical protection. When speed of replacement and accuracy of fit matter, sticking to the LA4K reference pays off in operation continuity and peace of mind.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Westinghouse","offers":[{"title":"Default Title","offer_id":46424453152930,"sku":"LA4K","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/westinghouse-la4k-circuit-breaker-400a-600v-459.webp?v=1789363900","url":"https:\/\/www.ampstate.com\/products\/westinghouse-la4k-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}