Siemens Bolt On Circuit Breaker, 20 Amps, Number of Poles: 1, 120/240VAC AC Voltage Rating

These BQ and BQH series miniature circuit breakers are bolted into place in panelboards, so they're more stable than plug-in breakers. They interrupt currents when low-level faults are detected in the circuit. They have a lug orientation to allow for straight-in wiring through bus bars, which eliminates the need to pigtail wires and helps organize the panelboard.