{"product_id":"lauritz-knudsen-dn3b-400d-4p-mccb-cm98403ooroog","title":"Lauritz Knudsen (Formerly L\u0026T Switchgear Business) DN3B-400D MCCB 400A – 4 Pole Thermal-Magnetic Release (CM98403OOROOG)","description":"\u003cp\u003eThe Lauritz Knudsen DN3B-400D MCCB is a high-capacity molded case circuit breaker designed for reliable protection of 3-phase + neutral systems. With a rated current of 400A and a thermal release adjustment range of 320A–400A, it provides precise protection for feeders, distribution panels, machinery circuits, and commercial electrical installations.This model uses a Thermal–Magnetic Release mechanism—the thermal element protects against long-duration overloads, while the magnetic element gives instant response to short-circuit faults. With a 36kA breaking capacity at 415V AC, it ensures safe interruption of high fault currents, making it suitable for demanding industrial and commercial applications.Its rugged molded casing, enhanced arc-quenching system, and stable tripping characteristics ensure long operational life even in harsh electrical environments. Ideal for HVAC systems, plant power distribution, utility boards, and heavy-duty equipment.Buy Lauritz Knudsen DN3B-400D MCCB from Maheshwari Distributors – Genuine product, proven reliability, and fast delivery across India.\u003c\/p\u003e","brand":"Maheshwari Distributors","offers":[{"title":"Default Title","offer_id":43867828748330,"sku":"CM98403OOROOG","price":24816.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0590\/1837\/9306\/files\/CM98403OOROOG_fa6d3602-d298-469b-981e-8154dba51208.webp?v=1764581508","url":"https:\/\/www.mgckart.in\/products\/lauritz-knudsen-dn3b-400d-4p-mccb-cm98403ooroog","provider":"MGCKART","version":"1.0","type":"link"}