Industrial CDK3400 U Circuit Breaker

Challenger CDK3400U is a three-pole molded‑case circuit breaker rated for 400 A at up to 600 V, designed to protect industrial electrical circuits from overcurrent. Identified by the model CDK3400U, this Challenger MCCB belongs to the CDK series and provides robust protection in power distribution equipment. With a 3‑pole configuration, it is suitable for three‑phase circuits where high current protection is required, such as main feeders and branch circuits in industrial panels. The CDK3400U delivers a 400 A rating and a 600 V maximum voltage, offering reliable interruption and disconnection within compatible Challenger panels and switchgear. Built with molded‑case construction, it is intended for demanding environments and contributes to steady, predictable performance in routine industrial operation.