Square D QO 20A Single-Pole CAFCI Dual Function Circuit Breaker is a dual function circuit breaker designed to save space and labor while meeting NEC (National Electrical Code) requirements. This innovative device combines two essential technologies—combination arc fault protection and ground fault protection—into one easy-to-install unit. It features integrated time saver diagnostics, providing additional circuit information and minimizing troubleshooting with the simple touch of a button. Specifically compatible with QO load centers, it operates at 120 volts with a 10,000 AIR rating. This circuit breaker is ANSI and UL listed, ensuring high standards of safety and reliability. It also comes with a limited lifetime warranty for added peace of mind. Model Number: QO120DFC