Eaton 3-Pole Tenant main circuit breaker accommodates copper/aluminum wire size of 4 - 4/0 AWG. It has a voltage rating of 120/208 star Volts and current rating of 100 Amps. It finds use in 1 MP, 1 mm and 3 mm 200 Amps modular metering stacks applications. Circuit breaker is UL listed.