Square D QO™ 1-Pole Combination arc fault miniature circuit breaker is rated at 20 Amps and 120 Volt AC at 50/60 Hz. It has interrupt rating of 10 Kilo-Amps. Circuit breaker has pressure plate connection. It measures 4.75 Inch x 0.75 Inch x 2.98 Inch. Plug-in circuit breaker offers LI, fixed thermal-magnetic type trip that safeguards device against thermal overloads, short-circuits and ground faults. It withstands temperature of 40 deg C. HACR rated circuit breaker accommodates 14 - 8 AWG