Exactly what we needed for a shutdown replacement. No surprises.
Plant · Shutdown
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Serving USA & Canada
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Seamless online shopping experience guaranteed with easy shipping and returns policy.
Shop with Confidence: Our Products come with a Reliable Year-Long Warranty.
Industrial LBB3400 400A 3-Pole 600V Circuit Breaker is built for demanding industrial power distribution, delivering dependable protection for three-phase circuits in manufacturing facilities, warehouses, and processing plants. With a 400 A current rating and a 600 V voltage class, this part (LBB3400) safeguards feeders and machinery against overloads and short circuits, helping to minimize downtime and protect critical equipment.
Designed for three-phase systems, this 3-pole breaker provides balanced protection across all phases, ensuring that a fault in one line doesn't leave other circuits unprotected. The rugged industrial construction is suited to continuous operation in harsh environments, where reliability matters most.
Ideal use cases: protect large motors, conveyors, pumps, and other heavy equipment in manufacturing lines; back up power distribution in critical facilities; implement reliable feeder protection in industrial switchgear and control cabinets.
Why choose the LBB3400 400A 3-Pole 600 V circuit breaker? It combines a high-current rating with a proven three-phase design, giving you sturdy, straightforward protection where voltage reaches industrial levels. This is the reliable solution for facilities that depend on continuous operation and rapid fault isolation.
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General feedback we often hear from customers purchasing industrial electrical parts.
Exactly what we needed for a shutdown replacement. No surprises.
Plant · Shutdown
Good communication and clear updates while the order was processed.
Project · Coordination
Looks and feels like a proper industrial-grade part. Works as expected.
Service · Field install
Fast industrial sourcing support
Email us at sales@ampstate.com for pricing, availability, alternates, and project support.
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