Siemens QT120GF U Single Pole Circuit Breaker

Siemens QT120GF U is a single-pole, 20-ampere circuit breaker in Siemens’ QT family, rated for 120-volt circuits. The 1P device interrupts fault currents up to 10,000 A, helping protect wiring from overloads and short circuits on standard residential 120 V circuits. In the QT family, breakers are designed with a half-inch width per pole for compact installation in QT-compatible panels, enabling space-efficient protection for lighting and receptacle circuits. With a 10 kA interrupt rating, the QT120GF U provides reliable overcurrent protection for 120 V distribution in homes and light commercial settings that rely on Siemens molded-case breakers.