Industrial CDK3400F U Molded Case Circuit Breaker

Industrial CDK3400F-U Molded Case Circuit Breaker from Challenger is a three-pole molded-case protective device rated for 400 A at 600 V, intended to protect three-phase power distribution circuits in industrial equipment and facilities. This CDK3400F-U model is part of Challenger’s CK/CDK family of molded-case breakers, designed for panelboard and switchgear installations where compact, reliable overcurrent protection is required. The three-pole configuration supports standard 3-phase electrical systems, enabling safe isolation and interruption of fault currents in feeders to motors, transformers, and other sizable loads within manufacturing or process environments. The molded-case construction provides electrical insulation and straightforward field wiring in 600 V circuits, and the unit is suited for installation in compatible industrial enclosures that accept CK/CDK-series breakers. In addition to its primary protection function, this breaker helps organize feeder protection in centralized distribution panels, improving system reliability and simplifying maintenance in factories, plants, and processing facilities. For exact electrical characteristics, mounting compatibility, termination options, and installation instructions, consult the official Challenger CK/CDK product literature and verify compatibility with your enclosure and local electrical codes.