The Intermatic T102 is a 24-hour 208-277 VAC single pole single throw(SPST) mechanical timer switch, this heavy-duty mechanical timer switch designed for industrial, commercial and residential applications. It features a high horsepower rating that is ideal for loads up to 40 amps resistive from 208 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 Single Pole Single Throw 40 Amps, 4000 watt capacity, 208-277 volts. The T100 Series Mechanical Time Switches are heavy-duty switches that have the highest horsepower ratings in the industry for industrial, commercial and residential applications.