Square D QOB130VH Miniature Circuit Breaker, QO Series, 30 A, 1-Pole, 120/240 V AC, Bolt-On, High Interrupting Capacity 22kA, Paddle Actuator

These QOB series miniature circuit breakers are bolted into place in NQOD and NQ panelboards or interiors, so they're more stable than plug-in or unit-mount circuit 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. High Interrupting Capacity (22kA at 120/240V AC) for demanding commercial applications.