This plug is a replacement for obsolete load centers. Item: Plug In Circuit Breaker Amps: 50 Number of Poles: 2 Circuit Breaker Type: Standard AC Voltage Rating: 120/240VAC DC Voltage Rating: Not Rated For Use With: Zinsco Load Centers Series: UBIZ Terminal Connection: Lug Min. Wire Size: 14 AWG Max. Wire Size: 8 AWG Length: 5.10" Width: 0.75" Depth: 2.75" Standards: ETL Listed Max. AIR Rating: 10 kA