{"product_id":"eaton-ldb3400-circuit-breaker","title":"Eaton | LDB3400 | Circuit Breaker | 400A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eEaton LDB3400\u003c\/strong\u003e is a demanding‑use circuit breaker built for 600V three‑phase systems. This 400A, 3‑pole unit delivers reliable overload and short‑circuit protection in commercial and industrial electrical distributions, making it an ideal choice for maintenance, retrofit, and replacement projects where exact specs matter.\u003c\/p\u003e \u003cp\u003eKey specifications at a glance:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 400A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles\u003c\/strong\u003e: 3‑Pole (three‑phase)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage\u003c\/strong\u003e: 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReference for compatibility\u003c\/strong\u003e: Part number LDB3400 is the strongest identifier to ensure a proper fit\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eImportant note\u003c\/strong\u003e: Verify fit and ratings before ordering to avoid mismatches\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy choose this Eaton breaker for your project?\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eDesigned for replacement and retrofit where your existing panel was configured for the LDB3400 family, ensuring a clean, reliable upgrade path.\u003c\/li\u003e \u003cli\u003eStreamlines maintenance by providing a known, compatible component that aligns with your 3‑phase, 600V distribution setup.\u003c\/li\u003e \u003cli\u003eReduces downtime with a straightforward swap for compatible panels, keeping your equipment protected without guessing about compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eUse cases and ideal applications\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReplacement for worn or failed 400A, 3‑pole breakers in 600V distribution panels.\u003c\/li\u003e \u003cli\u003eRetrofit projects when upgrading or refreshing a feeder or MCC (motor control center) section that requires LDB3400 compatibility.\u003c\/li\u003e \u003cli\u003ePart of a spare parts inventory for service teams that manage Eaton‑equipped facilities.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eInstallation and safety reminders\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eEnsure power is safely isolated and that the panel is designed to accept the LDB3400 family before installation.\u003c\/li\u003e \u003cli\u003eConsult manufacturer documentation for torque specs and installation guidelines, and replace any necessary auxiliary components as specified by Eaton.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":46427381661858,"sku":"LDB3400","price":13365.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-ldb3400-circuit-breaker-400a-3-pole-600v-908.webp?v=1789712826","url":"https:\/\/www.ampstate.com\/products\/eaton-ldb3400-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}