Schneider Electric (Square D) QO120 1-Pole Circuit Breaker 20A 120-240V

Schneider Electric (Square D) QO120 Circuit Breaker is a thermal-magnetic essential miniature component used to provide overcurrent and short-circuit protection in residential, and light commercial electrical panels. It operates by automatically interrupting the electrical circuit when current exceeds 20 amps or during a fault condition, supporting the prevention of wiring, and connected loads. This is typically installed in Square load centers and panelboards where single-pole 120/240V branch circuits are used. Within the system, it serves as a primary protective part that ensures safe distribution and operation of HVAC systems equipment and general electrical circuit.