The USED Eaton CHFAFGF120 Ground Fault Combination Circuit Breaker is a plug-in style device with a maximum amperage of 20A, suitable for interior use. It features overloading protection, Type A tripping characteristics, and operates with a combination of both A and B phases. With a voltage of 120 Vac and a single pole design, this circuit breaker by Eaton is designed for instantaneous break time and comes in a pack of 1. Its control style is a switch, making it an efficient and reliable choice for electrical circuit protection in various industrial and commercial settings.