The Siemens Q120 is a 1-pole, 20-amp, 120V residential plug-in circuit breaker from Siemens' QP series. It is one of the most commonly specified residential breakers in the United States, designed for use in Siemens and ITE loadcenters. The Q120 features thermal-magnetic trip technology for reliable overload and short-circuit protection, and its plug-in design allows for quick, tool-free installation and replacement. It is UL 489 listed, HACR-rated, and compatible with a wide range of Siemens residential and light commercial panels.
| Specification | Value |
|---|---|
| Amperage | 20A |
| Poles | 1 |
| Voltage | 120VAC |
| Interrupt Rating | 10kA @ 120V |
| Frame Size | QP (70A Frame) |
| Mounting Type | Plug-In |
| Trip Type | Thermal Magnetic |
| Trip Function | LI — Long-Time, Instantaneous |
| Wire Size | 14–10 AWG (Cu/Al) |
| Phase | 1-Phase |
| Standards | UL 489, CSA C22.2 No.5, NEMA AB 1 |
| Temperature Rating | 40°C |
Replaces: ITE Q120, Murray MP120
Siemens QP Residential 20A 1-pole circuit breaker. In stock at AllBreakerSales.com. Call (877) 611-0034 for same-day pricing. Genuine OEM parts, ships from US warehouse.
Brand: Siemens | Series: QP Residential | Catalog Number: Q120
Q115 - Siemens QP Residential | Q130 - Siemens QP Residential | Q140 - Siemens QP Residential | Q150 - Siemens QP Residential | Q160 - Siemens QP Residential