{"product_id":"eaton-ld3400y-circuit-breaker","title":"Eaton | LD3400Y | Circuit Breaker | 400A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eEaton LD3400Y\u003c\/strong\u003e Circuit Breaker — a rugged 400A, 3-pole protection device designed for demanding electrical systems. With a 600V rating, this breaker delivers reliable overcurrent protection for commercial and industrial applications, helping safeguard equipment and maintain uptime.\u003c\/p\u003e \u003cp\u003eEngineered for maintenance, retrofit, and replacement projects, the LD3400Y is a precise, compatible fit when you need to match existing panel specifications. When compatibility matters most, rely on the part number LD3400Y as the definitive reference to ensure seamless integration with your current infrastructure.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAmperage: \u003cstrong\u003e400 A\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePoles: \u003cstrong\u003e3-Pole\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eVoltage: \u003cstrong\u003e600 V\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003ePart number: \u003cstrong\u003eLD3400Y\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy choose the Eaton LD3400Y for your panel\u003c\/h3\u003e\n\u003cp\u003eUnlike generic substitutes, this Eaton circuit breaker is built to align with your existing 3-pole, 400A, 600V configurations. Its design supports dependable fault interruption, helping protect downstream equipment, improve safety, and minimize unplanned outages in demanding environments.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacing a failed or worn-out 400A, 3-pole breaker in industrial or commercial panels\u003c\/li\u003e \u003cli\u003eRetrofit projects where existing systems require exact LD3400Y compatibility\u003c\/li\u003e \u003cli\u003eMaintenance cycles that demand durable, long-life protection for high-load circuits\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility notes\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm that your panel and bus design accommodate a \u003cstrong\u003e400 A, 3-Pole, 600 V\u003c\/strong\u003e device. The LD3400Y is specified to be the best compatibility reference, so using the exact part number helps ensure proper fit, ratings, and safe, compliant operation. Engage a qualified electrician for installation and verification of electrical clearances, torque specs, and labeling as part of your routine maintenance and protective-device strategy.\u003c\/p\u003e \u003cp\u003eWith the Eaton LD3400Y, you gain a reliable, standards-aligned solution that fits your existing infrastructure, supports critical loads, and simplifies procurement by anchoring your choice to a precise, widely recognized part reference. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":46426393739426,"sku":"LD3400Y","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\/eaton-ld3400y-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}