Square D QOB345 45 Amp Miniature Circuit Breaker 10 KA 120~240 VACProduct: Miniature circuit breaker Range : QO Line Rated Current: 45 A System Voltage: 120 V AC 120 240 V AC 240 V AC 48 V DC Mounting Type: Bolt on Number of Poles: 3P Circuit Breaker Type: Standard Ratings: HACR rated Electrical Connection: Box lugs Interrupt Rating: 5 kA at: 48 V DC 10 kA at: 120 240 V AC 50 60 Hz 10 kA at: 240 V AC 50 60 Hz 10 kA at: 120 V AC 50 60 Hz Hz Number of Panel Spaces: 3 Wire Size: AWG 8 AWG 2 (copper or aluminium)