{"product_id":"eaton-ld3400w-circuit-breaker","title":"Eaton | LD3400W | Circuit Breaker | 400A | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Eaton LD3400W circuit breaker—a robust 400A, 600V protection device designed for maintenance, retrofit, and replacement projects where exact specifications matter. This is the trusted option when your panel calls for the LD3400W form factor and electrical characteristics.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e LD3400W\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters: the LD3400W is not a generic substitute. It’s a precise match for panels and assemblies that require Eaton’s LD3400W design and capability, providing reliable overcurrent protection for high-demand circuits in 600V systems.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eIdeal use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMaintenance on aging electrical distribution where a 400A, 600V breaker is specified\u003c\/li\u003e \u003cli\u003eRetrofit projects that require upgrading to a compatible LD3400W part\u003c\/li\u003e \u003cli\u003eReplacement for failed or obsolete breakers in compatible Eaton panels\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eHow to ensure a perfect match\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eConfirm fit and ratings before ordering\u003c\/li\u003e \u003cli\u003eThe part number is the best reference for compatibility\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical tips for installation and care\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eWork with a licensed electrician and power down equipment before replacement\u003c\/li\u003e \u003cli\u003eDouble-check panel labeling to ensure LD3400W compatibility\u003c\/li\u003e \u003cli\u003eKeep replacement part numbers on-hand for future maintenance and repairs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":46426461798562,"sku":"LD3400W","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-ld3400w-circuit-breaker-400a-600v-729.webp?v=1789581976","url":"https:\/\/www.ampstate.com\/products\/eaton-ld3400w-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}