The Square D QO120C is a 20-amp single-pole circuit breaker designed to protect electrical circuits from overload and overcurrent conditions. This miniature circuit breaker uses a thermal-magnetic tripping mechanism to detect faults and automatically disconnect power before damage occurs to wiring or equipment. It is compatible with QO load centers, CSED devices, and NQOD panel boards, making it suitable for both residential and commercial electrical systems.
One of the standout features of this breaker is the red Visi-Trip indicator, which provides instant visual confirmation of a tripped breaker. When the breaker trips, the handle snaps to a midpoint position between OFF and ON, with a bright red indicator that helps you quickly identify which circuit has opened among potentially dozens of breakers in a load center. This visibility significantly simplifies troubleshooting and reduces the time spent locating a problem circuit.
Features and Benefits
- Thermal-Magnetic Trip Mechanism: Provides reliable protection against both overload and short-circuit conditions through a combination of thermal and magnetic sensing elements.
- Visi-Trip Indicator: A red indicator that clearly shows when the breaker has tripped, eliminating guesswork in identifying faulted circuits in panels with multiple breakers.
- 20-Amp Capacity: Rated for 20 amperes, balancing adequate load handling for standard residential and light commercial circuits with dependable protection.
- Wide Compatibility: Works with QO load centers, CSED devices, and NQOD panel boards for flexible installation options.
Specifications
- Brand: Square D
- Model: QO120C
- Amperage: 20 A
- Poles: 1-Pole (Single-Pole)
- Voltage Rating: 120/240 VAC, 48 VDC
- Type: Miniature Circuit Breaker
- Trip Mechanism: Thermal Magnetic
- Indicator: Visi-Trip








