Siemens 1-Pole QE Type Circuit breaker has voltage rating of 120 VAC/ current rating of 20 Amps and current interrupt rating of 10 kilo-Amps. AFCI circuit breaker accommodates copper wire of size 14 - 8 AWG and aluminum wire of size 14 - 6 AWG. Circuit breaker has torque rating of 25 lb-Inch. It uses plug-in mounting to hold firmly. Circuit breaker is UL listed and HACR SWD rated. Also known as -Siemen 20A AFCI Breaker-Siemens 660851 Qaf Plug-In Arc-Fault Combination Breaker 1-Pole 20A-Siemens QA120AFC Arc-Fault Circuit Breaker 20 Amp 120 Volt AC 1-Pole Plug-In