Intermatic WH40 Electric Water Heater Timer, Gray

"The WH40 Mechanical Water Heater Time Switch regulates electric water heaters. Daily operation can be set with trippers from 1 to 23 hours. Enables shifting electricity use into off-peak time periods to reduce utility cost. Designed for industrial, commercial and residential applications DPST 208-277 Volts Electrical rating: 40 amps per pole, 60 Hz Minimum on/off time - 1 hour Includes 3 sets of on/off trippers Convenient external override switch Gray finish Steel NEMA 1 indoor enclosure Combination 1/2"" - 3/4"" knockouts 7-3/4""H x 5""W x 3""D"