By Intermatic



Part # T104P3

Alternate Part #'s INTT104P3

Product Description

This heavy duty mechanical time switch is designed for industrial, commercial and residential applications. This time switch has the highest horsepower ratings in the industry for loads up to 40 amps resistive from 120 to 480 volts providing direct 24 hour time switch control of most loads.

This series provides 1 to 12 "ON/OFF" operations each day with minimum ON/OFF times of 1 hour. All models are equipped with one "ON" and one "OFF" tripper.

• Booster Pumps
• Lighting
• Hydro Chlorinators
• Fans
• Air Conditioning
• Music and Signal Systems
• Heat Pumps 


Click here for more Intermatic Timers

Product Specifications

Typical Order Qty.:
220 V

?     Asked on 9/6/2006by Guest

My pool pump motor indicates V115/230. Will thistimer accommodate the pool pump? Also,can you tell me the voltage on the clock motor?

A  Answered on 9/6/2006 by InyoPools Product Specialist Patrick P.

Your pump can be wired either 115V or 230V If you have your pool pump wired at 230V than you would want to go with the T104P3 timer if you have the pump wired at 115V than you would want to go with the T101P3 timer. T104P3 timer has a 230V time clock motor and the T101P3 timer has a 115V time clock motor. You may purchase either of these time clocks through the following link http://www.inyopools.com/controls_intermatic.aspx

?     Asked on 2/17/2007by Guest

I have a T104R timer is this the proper replacement?

A  Answered on 2/17/2007 by InyoPools Product Specialist Patrick P.

The T104R3 or the T104P3 are direct replacements for any T104 timer. The only difference between these two timers is that the T104R3 comes in a metal enclosure and the T104P3 comes in a plastic enclosure.

?     Asked on 12/26/2007by Guest

How many on/off devices come with the unit? I am using this for my eletric hot water heater, I want the heater to come on around 5:00AM and off at 7:00AM, then on again at 5:00PM and off and 7:00PM. So I guess I'm asking can I program two on and off's or do I have to buy something else?

A  Answered on 12/26/2007 by InyoPools Product Specialist Patrick P.

This timer comes with one "On" tripper and one "Off" tripper  but can accommodate up to 12 On/Off positions. So to accomplish the following "...come on around 5:00AM and off at 7:00AM, then on again at 5:00PM and off and 7:00PM" You would require the purchase of the timer which comes with 2 trippers, plus the purchase of one additional set of on / off trippers which you may view or purchase here http://www.inyopools.com/Products/02400004003526.htm

?     Asked on 5/26/2009by Guest

Does this timer have knockouts for the electrical and where are they located?

A  Answered on 5/26/2009 by InyoPools Product Specialist Patrick P.

Here is all the information we have regarding the knockouts: Knockouts - Combination 1/2" - 3/4" nominal knockouts, one on the back and each side of case, two on bottom

?     Asked on 1/23/2013by Guest

Will the T104 M work for the Intermatic T104P3 timer?

A  Answered on 1/23/2013 by InyoPools Product Specialist Patrick P.

Yes, the T104 will fit inside of the Intermatic T104P3 timer.


Est. Repair Time

1 to 2 hrs

Tools Needed

Screwdriver, Pliers, channel locks

0     1

18 yr old box latch was broken and internals were very stiff to move

Written on 3/25/2017 by Guest

This was a simple one-for-one replacement.
1.) shut power off
2.) label wires so they can be reconnected to the same terminals.
3.) disconnect wires - screwdriver.
4.) disconnect three conduit connections (channel locks)
5.) Unscrew Enclosure from wall and attach new Enclosure using same screws
6.) reconnect conduit
7.) reconnect wiring
8.) set the correct time and the two on/off toggles
9.) turn power back on.

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Review Summary

 (Average 4.79  out of 5 stars)
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