Schneider Electric's Square D QO120PDF is a 20-amp dual-function plug-on circuit breaker for QO load centers, delivering arc-fault (AF) and ground-fault (GF) protection in a single device. The QO120PDF snaps into compatible QO panels to protect branch circuits from AF and GF faults, providing a compact plug-on protection solution within the Square D QO family for residential and light commercial installations.
