Heavy duty mechanical time switch is designed for industrial, commercial, and residential applications. Has the highest HP ratings in the industry for loads up to 40A resistive from 120 277 volts prov direct 24 hour time switch control of most loads. This 24 Hour Dial is designed for industrial, commercial and residential applications. Highest HP ratings in the industry for loads up to 40 amps, providing direct 24 hour control of most loads. Provides 1 to 12 ON/OFF operations each day with minimum ON/OFF times of 1 hour. Also equipped with one ON and one OFF tripper. Applications : indoor/outdoor lighting, signs, air conditioning, electric fences, fans, music and signal systems, heating/ventilating systems, post lanterns, pool heaters, hydrochlorinators, blowers, poultry foggers and more.