Siemens Q220GF Ground Fault Circuit Interrupter

Siemens Q220GF is a 20-amp, two-pole ground-fault circuit interrupter (GFCI) circuit breaker designed for Siemens Q‑Line plug‑in panels to deliver ground‑fault protection on 120/240V circuits. As part of the QPF/QPHF/HQPFB plug‑in GFCI family, it is a 2‑pole, 120/240V AC device that replaces standard breakers in compatible Siemens load centers. The unit monitors current between the hot conductors and trips to cut power within milliseconds when a ground fault is detected, helping protect people from shock in damp or exposed locations. The Q220GF is intended for residential installations that require GFCI protection on a 20A circuit, and it is listed for use in Siemens Q‑Line panels with plug‑in mounting. In addition to the base model, Siemens offers related Q220GF variants across different certifications and regional listings (for example, the Canadian variant Q220GFCSA), all sharing the same 20A, 2‑pole, 120/240V design and plug‑in form factor.