Siemens Low Voltage Residential Specialty Load Centers 300-600 amp. Load Centers Type 1 Application Residential V. Rating 120/240V A. Rating 300A Phase 3PH Load Regulation 300A Wiring Conf 3/4w Bus Rating 300A Interrupt Rating 22000AIC Circuit Breaker Type MB No. Of Spaces 42S Cover Type EQ Size (H x W x D) 11x21x62 Mounting Surface