Intermatic T104P201 24 hour DPST mechanical time switch in plastic enclosureIntermatic 24-Hour DPST Mechanical Time Switch with Heater Protection, 208-277V, T104P201 In stock$17705
Intermatic T104P201 24 hour DPST mechanical time switch in plastic enclosure
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Intermatic 24-Hour DPST Mechanical Time Switch with Heater Protection, 208-277V, T104P201

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$17705
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Quick overview

  • Heater protection built in It turns a gas fired pool heater off roughly 20 minutes before the filter pump stops.
  • Why that matters Cutting the heater early stops the pounding and knocking from overheated water, cuts scale and lime deposits, and adds service life to the heater.
  • 24 hour mechanical timing Up to 12 ON and OFF operations a day, with a minimum ON or OFF time of one hour.
  • DPST at 208-277V Double pole single throw switching across the 208 to 277 volt range.
  • Heavy duty ratings Intermatic builds these for commercial, industrial and residential use, with the highest motor load ratings in the industry.
  • Plastic enclosure Supplied in a plastic enclosure, ready to mount at the pad.
Full description and specifications ↓

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Product details

The Intermatic T104P201 is a 24 hour DPST mechanical time switch in a plastic enclosure, rated 208 to 277 volts. It carries Intermatic heater protection.

The heater protection function

This model is set up to shut a gas fired swimming pool heater off approximately 20 minutes before the filter pump stops. Those 20 minutes let the pump keep pulling water through the heat exchanger while it cools. Without them, hot water sits still inside the heater, and the result is the pounding and knocking owners describe as the heater banging, plus scale and lime deposits that build up over seasons. Running the heater down first avoids all of that and adds service life.

Timing and switching

The clock gives up to 12 ON and OFF operations a day with a minimum one hour ON or OFF period. Switching is DPST, and Intermatic builds these heavy duty mechanical time switches for commercial, industrial and residential work with the highest motor load ratings in the industry.

What else it drives

Beyond pool and spa filter pumps with gas fired heaters, the same switch is used on booster pumps, lighting, hydro chlorinators, fans, air conditioning, music and signal systems, and heat pumps.

Specifications
Brand Intermatic
Manufacturer part number T104P201
UPC 078275700581
Type 24 hour mechanical time switch
Switch DPST
Voltage 208-277V
Enclosure Plastic
Operations Up to 12 ON/OFF per day
Minimum ON/OFF time 1 hour
Heater protection Turns off a gas fired pool heater about 20 minutes before the filter pump
Applications Booster pumps, lighting, hydro chlorinators, fans, air conditioning, music and signal systems, heat pumps, pool and spa filter pumps with gas fired heaters
Shipping weight 3.45 lb
Ships Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

What does the heater protection actually do?
It shuts the gas heater off about 20 minutes before the filter pump. That lets the pump carry the residual heat out of the exchanger instead of leaving it to sit in still water.
Why does that matter?
Overheated standing water causes pounding and knocking, drives scale and lime deposits, and shortens heater life. Cutting the heater early avoids all three.
How many on and off cycles can I program in a day?
Up to 12, with a minimum ON or OFF period of one hour.
What voltage does it take?
208 to 277 volts, switching DPST.
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