Century, 24 Hour Dial Heavy duty mechanical time switch is designed for industrial, commer-cial & residential applications. This time switch has the highest H.P. ratings in the industry for loads up to 40 amps. Resistive from 120 to 480 volts providing direct 24 hour time switch control of most loads. The Century Series provides 1 to 12 "ON/OFF" operations each day with minimum ON/OFF times of 1 hour. All models are equipped with one "ON" and one "OFF " tripper.