{"product_id":"lb3400k-circuit-breaker","title":"LB3400K | Circuit Breaker | 400A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the LB3400K Industrial Circuit Breaker—a robust, purpose-built protection device designed for demanding electrical environments. With a 400 A rating, a 3-pole configuration, and a 600 V maximum, this unit is ideal for maintenance, retrofit, and replacement projects where exact specifications are essential.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-pole configuration for three-phase systems\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility reference:\u003c\/strong\u003e The LB3400K part number serves as the best guide for fit and electrical ratings\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters in the field: In industrial settings, selecting the right circuit breaker isn’t just about turning power on and off. A correctly matched device protects equipment, supports safe operation, and minimizes downtime by ensuring reliable tripping under overload or short-circuit conditions. The LB3400K is designed to drop into compatible panels and switchboards with minimal fuss, helping you complete maintenance or upgrades faster and with fewer compatibility surprises.\u003c\/p\u003e \u003cp\u003eIdeal use cases:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance:\u003c\/strong\u003e Replace aging or failed breakers with an exact spec match to restore panel protection quickly.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRetrofit:\u003c\/strong\u003e Upgrade legacy systems to modern, reliable protection using a 3-pole, 600 V device.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReplacement:\u003c\/strong\u003e Seek a certified substitute when the original part number aligns with LB3400K specifications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical buyer guidance:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eBefore ordering, \u003cstrong\u003econfirm fit and ratings\u003c\/strong\u003e match your existing equipment. The LB3400K part number is your best reference for compatibility.\u003c\/li\u003e \u003cli\u003eEnsure your system is \u003cstrong\u003ethree-phase and within 600 V\u003c\/strong\u003e service to guarantee proper operation and safety margins.\u003c\/li\u003e \u003cli\u003eVerify panel and mounting compatibility to facilitate a smooth replacement without alterations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoosing the LB3400K means opting for a durable, industrial-grade circuit breaker that supports reliable protection, faster maintenance cycles, and better alignment with your current electrical standards. It’s the practical choice for professionals safeguarding critical equipment and keeping your operations running smoothly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46426178584738,"sku":"LB3400K","price":2010.0,"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\/lb3400k-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}