#1 Home Improvement Retailer

Internet #100016924

Model #T104MD89

Store SKU #700763

T104 Series 40 Amp 208-277-Volt DPST 24 Hour Mechanical Time Switch Mechanism

  • 1 to 12 on/off operations per day, minimum on/off time - 1 hour
  • General purpose use-lighting, pool heaters, A/C, fans, pumps, etc
  • Mechanism only
  • See More Details

Product Overview

The T100 Series 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.
  • Direct 24-hour control of most loads
  • Up to 12 ON/OFF operations each day with minimum ON/OFF times of one hour
  • Manual override
  • One ON and one OFF tripper included
  • Mechanism only
  • Perfect for use with indoor/outdoor lighting, signs, filters, electric fences, fans, conveyors, pool heaters, blowers, pumps and more
  • California residents

Info & Guides

You will need Adobe® Acrobat® Reader to view PDF documents. Download a free copy from the Adobe Web site.

Specifications

Details

Accessory Type
Timer
Color Family
Gray
Commercial/Residential
Residential
Electrical Product Type
Dimmer/Lighting/Control Part/Accessory
Indoor/Outdoor
Indoor,Outdoor
Light Bulb Type Included
No Bulbs Included
Mounting Type
Wall Mounted
Returnable
90-Day
Use Type
Timers
Voltage
208 volt,277 volt
Wired or Wireless
Wired

Warranty / Certifications

Manufacturer Warranty
1-year

Questions & Answers

47Questions15Answers

What the Difference between t104p from t104 intermatci

Asked by Kiko March 7, 2021
3
Answers

The "p" stands for plastic. the T104P comes in a plastic enclosure while the T104 is metal.

I have an intermatic PF 1102 MT. Can someone advise me, which one can use to replace it. Electric...

Asked by Andy January 26, 2021
1
Answer

Hello, The PF1102MT is a timer and freeze control device. The T104 series will not have the freeze control option but will be ok to turn the pump on and off properly. If you need the freeze control then it is best to use the PF1102MT and replace just the mechanism in your existing enclosure. Thank you

I have a T103 series intermatic timer. I have bought several sets of trippers but the tripper th...

Asked by Barb January 6, 2021
1
Answer

Barb, Please contact Intermatic tech support at 815-675-7000

I have a Model T10004RT1 time switch with transformer. Will this be compatible and interchange.

Asked by PS1250 December 19, 2020
1
Answer

If you are going to ask a question please provide the required information. Will this be compatible with what? Will it interchange with what? What is the actual question?

DOES THE MODEL T 104MD89 REPLACE MODEL T104P3?

Asked by JACK October 6, 2020
1
Answer

Jack. The T104MD89 is just the guts of the timer. No enclosure.It will replace the guts of the T104P3.

will this replace model wg-433-3

Asked by al September 14, 2020
1
Answer

Al, WG433 is the motor number. T104 is one of the timers that will work

would this product work for mine

Asked by pooltimer July 17, 2020
2
Answers

I bought this for my pool timer and works perfect, I don't know what you are using it for.

Can I replace the 104 with the 103?

Asked by Steve July 9, 2020
1
Answer

The 104 has a 240 volt clock motor while the 103 has a 120 volt clock motor. The only way you can use the 103 in place of the 104 is if you have both 120 volt & 240 volt present at the timer. That means you must have a neutral wire present along with the two hot wires.

Is this the correct timer to replace the timer in my Intermatic PF1202T ? I use it to power my p...

Asked by Carol June 23, 2020
2
Answers

Yes. The PF1202T usually comes with two T104 mechanisms pre-installed.

Is the manual level on the timer supposed to switch off when it reaches the "off" time?

Asked by Jo June 21, 2020
2
Answers

Yes, it does switch off when the time is reached. It takes awhile for it to kick the lever off.

T104 Series 40 Amp 208-277-Volt DPST 24 Hour Mechanical Time Switch Mechanism - page 2

Customer Reviews

  • 4.6
    out of 370 reviews
  • 95% recommend this product
Filter by:
Showing 1-10 of 370 reviews
This is the first time that we have had a timer installed with the water heater. This particular...
This is the first time that we have had a timer installed with the water heater. This particular timer was highly recommended by the Home Depot employee helping us. It was highly recommended because of personal use. We have had our new water heater and new timer for a week and we are very happy that we have hot water in the mornings as we all get ready for our day and in the evenings for cooking, dishes, and showers. So far the timers settings meet the needs of our family. It is good to know that if we need to adjust it that we will be able to do that. Very happy so far!
by happy
I commonly encounter these used for controlling On/Off times for pool filter pump applications. ...
I commonly encounter these used for controlling On/Off times for pool filter pump applications. Removing the old and installing the new is simply a matter of taking the tension off the clips securing it and slipping it out or in... no tools needed (other than the wiring). They usually prove reliable for at least a couple of years (sometimes much longer) but might eventually fail, the most common problems are worn gears preventing it from keeping time or sometimes the cams wear out preventing it from operating the On/Off trigger switch from functioning. It also has extra holes for mounting in non-standard enclosures if need be (see photos)
by Kenneth
3 people found this helpful
This was any easy fix for my non-working pool pump timer. You just turn off the power to the pum...
This was any easy fix for my non-working pool pump timer. You just turn off the power to the pump, mark the existing wires, remove the existing wires, pop the old timer out of the case, pop the new timer into the case, re-attach the existing wires to the new timer, set the new timer, and turn on the power. It just requires a phillips screwdriver. There are several YouTube videos available. I don't know what the pool maintenance company would have charged me for this fix, but I know it would have been much more than the fifty-some dollars I spent for the timer at Home Depot.
by DoItYourselfer
1 person found this helpful
Product operates and functions as advertised
Product operates and functions as advertised
by Dan
1 person found this helpful
This time was a perfect fit and was easy to install…. My pool is working correctly again.
This time was a perfect fit and was easy to install…. My pool is working correctly again.
by Badger
Used to replace old pool pump timer. It fit the old timer box. The instructions were very clear o...
Used to replace old pool pump timer. It fit the old timer box. The instructions were very clear on the connection options which there where many. Came with everything i needed. First time home owner was very easy to connect. Works great!
by Riff
Works like a charm, my old one had a stripped...
Works like a charm, my old one had a stripped gear after 25 years use .Great to find this part at local Home Depot !
by theturboman
1 person found this helpful
installed as a replacement for a different brand timer using "L" brackets to mount it... works pe...
installed as a replacement for a different brand timer using "L" brackets to mount it... works perfectly
by Go2Guy
Works as described
Replaced my pool pump timer with this new one. Very simple to install. It just snaps right in and a few wires to connect.
by bobtheborg
1 person found this helpful
Mechanism only
Nice option to buy without the box if you're replacing the unit.
by Spicoli1965
1 person found this helpful
Showing 1-10 of 370 reviews