Siemens QF115A Miniature Circuit Breaker

Siemens QF115A is a 15-amp, single-pole GFCI circuit breaker in the QF family, designed for 120-volt general-purpose branch circuits and providing built-in ground-fault protection. This breaker has a 10 kA interrupting capacity at 120 V and carries the part number QF115A, making it compatible with Siemens panelboards that accept QF-series devices. As a GFCI breaker, it continuously monitors the current between hot and neutral conductors and trips on any imbalance, helping reduce the risk of electric shock in locations where moisture or water exposure is a concern. It is intended for use on 120 V circuits in residential or light commercial installations that require ground-fault protection, and it is commonly encountered in distributor catalogs alongside other QF/QFP variants. When installed following local electrical codes and with the appropriate neutral connection, the QF115A provides rapid fault clearance to protect people and equipment on the protected circuit.