Single-pole 1 in. Combination afci circuit breaker is designed for arc-fault, overload and short-circuit protection of an electrical system. Designed to detect arcs that are caused by damaged, aged, or improperly used wires or cords and to disconnect the power. 10ka interrupting rating. Rated for 120 vac. Carded. Features Plug-in; Combination afci; 20amps; Dimension – 4.6 x 3.7 x 6.9 in.; Item weight – 1 lbs.; .