Challenger CK3400F Molded Case Circuit Breaker

Challenger CK3400F Molded Case Circuit Breaker is a CK-series frame-size, three-pole protective device rated for 400 A and 600 V, designed for 3‑phase electrical systems. This CK3400F is a frame‑only unit; the trip unit must be ordered separately to provide thermal-magnetic overcurrent protection. It ships with line and load side lug connections for easy installation and offers a 35 kA interrupting rating at 480 V, enabling feeder or main protection in commercial and industrial panels up to 400 A. Built for operation in ambient temperatures up to 40°C, it is intended for use where a compatible CK-series trip mechanism is installed and mounted in CK panels or switchgear. In service, it functions as the protective element that interrupts current during overloads or short circuits when combined with the appropriate CK trip unit, making it a flexible choice for standardized CK-series configurations in power distribution installations.