The T-101 Timer mechanical time switch has proven it can stand the test of time. These dependable time switches can handle electrical loads up to 40 A per pole and allow for up to 12 on/off operations per day. A manual override switch provides added convenience. Designed for industrial, commercial and residential applications. The Heavy Duty 40 Amp 120 Volt Timer is ideal for loads up to 40 amps resistive from 120-volts providing direct 24 hour time switch control of most loads. The Heavy Duty 40 Amp 208/277 Volt Timer has the highest horsepower ratings in the industry for loads up to 40 amps resistive from 208/277 volts providing direct 24 hour time switch control. This series provides from 1 to 12 “ON/OFF” operations daily with minimum ON/OFF times of 1 hour. Housed in a durable meal case.