The NEMA3R STL CASE 208-277V DPST TIM SW These heavy-duty Mechanical Time Switches are designed for commercial, industrial and residential applications and have the highest motor load ratings in the industry. They provide up to 12 ON/OFF operations each day with a minimum ON/OFF time of 1 hour. This model is designed to turn OFF a gas fired swimming pool heater approximately 20 minutes before the filter pump shuts down. This eliminates the problem of pounding and knocking due to overheated water, reduces scale and lime deposits and extends the service life of the heater.
Modified Industry Description
1 Day Maximum Number Of Operations 12 Minimum On Time 1 Hr Minimum Off Time 1 Hr DPST Switch 40 Ampere At 120 To 480 VAC (Resistive) 40 Ampere At 120 To 277 VAC (Tungsten Inductive) 10 Ampere
Intermatic® T104R201 Mechanical Timer, 24 hr Time Setting, 208/277 VAC, 5 hp, 2NO DPST Contact Form, 2 Poles