QO (plug-on) thermal-magnetic circuit breakers provide overcurrent protection and switching on ac and dc systems. Plug-on QO circuit breakers are for use in QO load centers, NQ and NQOD panel boards, OEM mounting bases, and Speed-D switchboard distribution panels.Item: Plug In Circuit BreakerAmps: 100Number of Poles: 3Circuit Breaker Type: StandardAC Voltage Rating: 240VACDC Voltage Rating: 48VDCFor Use With: QO Load Centers and NQOD PanelboardsSeries: QOTerminal Connection: Box LugMin. Wire Size: 4 AWGMax. Wire Size: 2/0Length: 3.50"Width: 2.25"Depth: 2.91"Standards: UL Listed, CSA CertifiedMax. AIR Rating: 10 kA