Siemens - 20/50 amps Standard 3-Pole Circuit Breaker

Siemens Q120 20 Amp Single-Pole Circuit Breakers offer thermal-magnetic protection for standard 120V branch circuits in QP load centers and compatible Murray panels. Rated at 10kAIC for overloads and short circuits, they support #14-4 AWG Cu/Al wire with Insta-Wire push-in terminals for fast installation on lights, outlets, or appliances. UL/CSA listed with toggle actuation for reliable residential use.

Siemens Type QD circuit breakers are UL classified for use in specific Square D load centers in place of Square D QO circuit breakers (see listing on back).For easy reference, a panelboard compatibility list is provided with each circuit breaker. All QD breakers are supplied with load side connectors suitable for 60/75C wire and are calibrated for 40C maximum ambient applications.

These circuit breakers offer the new Self-Test and Lockout feature as required by UL 943, enabling the GFCI to automatically and continuously test itself to ensure that it is working properly. If it is detected that the device has been compromised, the device trips itself and locks out the homeowner from resetting the device, reducing the possibility of the homeowner incorrectly assuming that the device was tripped to prevent a ground fault.