The Intermatic T103P is a 40 amp 24-hour double pole single throw(DPST ) surface mount mechanical timer switch with outdoor plastic enclosure 120 volt in gray color finish. The intermatic timer T103P is a heavy duty outdoor mechanical timer switch designed for industrial, commercial and residential applications. Features a high horsepower rating that is ideal for loads up to 40 amps resistive from 120 volts and direct 24-hour time switch control of most loads. All models are equipped with one "ON" and one "OFF" tripper. The unit contains a 1-circuit standard On/Off Double Pole Single Throw 40 Amps, 4000 watt capacity, 120 volts.