The Challenger A2020 Type A 1 Pole Twin Tandem 20 Amp Circuit Breaker is a plug-in unit suitable for wall installation in both interior and exterior settings. It is designed for AC current type with a voltage rating of 120/240 VAC and a maximum amperage of 20 A. This breaker features a Type A tripping characteristic, screw terminal electrical connection, and on/off control style with a switch operation method. It is a compact unit with two positions and is ideal for use in various rooms and applications where a single-pole tandem breaker is required.