Siemens Q120H N Circuit Breaker

Siemens Q120H N Circuit Breaker is a single-pole, 120V AC, 20A plug-in breaker from Siemens’ Q series (Type QPH). It protects a single 120V branch circuit in compatible Siemens panels and uses a thermal-magnetic trip mechanism to provide overcurrent protection. The Q120H N carries a 22 kA interrupt rating at 120V, enabling safe interruption of faults on typical residential wiring, and it fits in standard QPH-compatible load centers for quick replacement. Designed for 120V circuits such as lighting and receptacle runs, this 1-pole device is a straightforward, code-compliant option when Siemens Q-series breakers are specified for the panel. Ensure the enclosure accepts QPH breakers and reference Siemens’ QP/QPH family cross-compatibility for exact Model-to-panel compatibility.