Connecticut Electric Q30 UBIZ30 Replacement. One Pole 30 Amp Thick Series Replacement Zinsco circuit breaker manufactured new by Connecticut Electric For use in Zinsco circuit breaker panels Intertek ETL Listing to UL Standard 489 for US and Canada-Molded case circuit breakers 10,000 AIC 30 Amp 120 VAC 1 Pole breaker in 3/4"body Plug in type May also be branded as Sylvania (ie, Sylvania Q30)