The Square D QO120EPD is a 20 amp, 120 volt AC circuit breaker suitable for interior use. It features overload protection and operates at an operating temperature of 40°C (104°F). This snap-in breaker with a black color design has a single pole single throw (SPST) configuration and is compatible with wire gauge 14. With a maximum amperage of 20A and an instantaneous break time, this Schneider Electric product is ideal for residential and industrial electrical applications.