Eaton / Cutler-Hammer Molded Case Circuit Breaker Its Compact And Easy to Install Series C three pole molded case circuit breaker has a DK-frame it has a current rating of 400 amps at 40 deg c it has a voltage rating of 250 Vdc and 240 Vac at a frequency of 50/60 Hz it has an interrupt current rating of 65 kilo-amps at 240 Vac/10 kilo-amps at 250 Vdc it is ideal for switchboard panel board motor control center and applications for dependable branch circuit protection a circuit breaker is UL and Csa certified.