Siemens QP1100U100A120V1P Molded Case Circuit Breaker is a 100 A, 120 V, single-pole device from Siemens' QP family, designed to protect a single hot leg in low-voltage distribution panels. It is used in electrical systems to interrupt overcurrent and prevent damage from overloads or short circuits. The model code QP1100U100A120V1P encodes a 1-pole, 120 V, 100 A configuration within the Siemens QP lineup.
