{"product_id":"westinghouse-lb3400w-400a-3p-600v-circuit-breaker","title":"Westinghouse LB3400W Circuit Breaker, 400A, 3-Pole, 600V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Westinghouse LB3400W circuit breaker — a purpose-built solution for the most demanding industrial electrical service, maintenance, and replacement projects. Designed for three-phase systems, this 400 A, 3-pole unit delivers reliable protection where it matters most.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Westinghouse\u003c\/li\u003e \u003cli\u003ePart Number: LB3400W\u003c\/li\u003e \u003cli\u003eProduct Type: Circuit Breaker\u003c\/li\u003e \u003cli\u003eAmperage: 400 A\u003c\/li\u003e \u003cli\u003ePoles: 3\u003c\/li\u003e \u003cli\u003eVoltage: 600 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy this matters for your operation\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIn industrial facilities, protecting equipment and preventing downtime hinges on selecting a circuit breaker that matches your system’s requirements. The LB3400W is sized for three-phase layouts up to 600 V, offering dependable overcurrent protection for main feeds, branch circuits, and distribution panels. By aligning the part number LB3400W with your application, you ensure safe fit and straightforward maintenance over the long run.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eHow to verify compatibility\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eConfirm fit by checking the part number against your panel or equipment specification and your current electrical configuration. If you’re unsure about compatibility, we can help—send us a message and we’ll assist with part-number matching and application requirements.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eUse cases and ideal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBest suited for facilities that rely on robust three-phase power distribution, including industrial manufacturing lines, warehouses, and service feeders. It’s a practical replacement for worn or obsolete units where a 3-pole, 600 V breaker is needed to restore reliable protection quickly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46415983214754,"sku":"LB3400W","price":460.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_513d6710-3734-4b27-839d-f68e6f4b470a.png?v=1765492974","url":"https:\/\/www.ampstate.com\/products\/westinghouse-lb3400w-400a-3p-600v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}