Model # T104MD89

Internet #100016924

Store SKU #700763

Intermatic T100 Series 40 Amp 208-277-Volt DPST 24 Hour Mechanical Time Switch Mechanism
0078275000261

Intermatic

T100 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
$54.00 /each

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Product Overview

Intermatic is dedicated to providing energy conscious solutions and this heavy duty time switch mechanism is designed for industrial, commercial and residential applications. It has the highest motor load rating in the industry. It is equipped with on and off trippers and can be installed in almost all Intermatic enclosures.

  • Provides up to 12 on/off operations per day with minimum on/off times of 1 hour
  • 5 HP Rating
  • For general purpose use - Lighting, pool heaters, air conditioning, fans, pumps and much more
  • Manual override
  • 40 Amps resistive per pole
  • Mechanism only
  • CSA certified

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Warranty / Certifications

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Customer Questions & Answers

12 Questions21 Answers

Customer Questions & Answers

T100 Series 40 Amp 208-277-Volt DPST 24 Hour Mechanical Time Switch Mechanism
T100 Series 40 Amp 208-277-Volt DPST 24 Hour Mechanical Time Switch Mechanism

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3 answers

WILL THIS REPLACE A T104R

This question is from T100 Series 40 Amp 208-277-Volt DPST 24 Hour Mechanical Time Switch Mechanism
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PEORIA, AZ
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March 14, 2016
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Home Improvement Profile: DIYer
August 11, 2016
Answer: 
NO at first I thought this was a t104 this timer only has 1 set of contacts and if A BIG NO NO on a 230 volt setup. this style was deigned for 110 volt ! do not use this timer for 230 v applications ! use the T104
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March 15, 2016
Answer: 
Yes, this will replace a T104R.
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March 15, 2016
Answer: 
Yes, this will replace the mechanism inside the T104, T104R, T104P, T104PCD82, and T104P3.
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3 answers

Does this item include the timer motor

This question is from T100 Series 40 Amp 208-277-Volt DPST 24 Hour Mechanical Time Switch Mechanism
Asked by
Dallas, TX
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September 23, 2015
I've read where you can change just the timer motor. The timer motor is mounted on the back. My timer motor is Model# WG1573-5. I want to change both the T104 Time Switch Mechanism AND the timer motor.
Is this product BOTH the Timer Switch Mechanism (T104) AND the timer motor (WG1573-xzy)?
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Home Improvement Profile: DIYer
August 10, 2016
Answer: 
Three ways to buy this complete,timer board or just the motor.. motors are for the T104 115volt wg1573 or for hi voltage 230v is the Wg2573
soo yes the motor is included on just the board only item, also comes with new trip tabs.
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Asked by
Kissimme
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October 27, 2015
Answer: 
Yes it does.
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September 24, 2015
Answer: 
Yes, the T104MD89 is the entire replacement timer mechanism, which does include the motor/geartrain assembly.
T104 is a complete timer in an enclosure; the mechanism without a motor is not available thus has no model number.
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3 answers

How to I determine if this is a match for the pool pump and cleaner motors I need it for?

This question is from T100 Series 40 Amp 208-277-Volt DPST 24 Hour Mechanical Time Switch Mechanism
Asked by
Dallas, Texas
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March 12, 2015
I have a pool pump and a booster pump that are dual voltage (115/230). I was told that I needed a timer that ran on the same voltage. I also was told that dual voltage pumps are normally set at 230.

Is this timer a match for my pumps or is there some other criteria I should use in selecting one?
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Asked by
Daytona Beach
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June 18, 2015
Answer: 
Look at the timer you have now and compare it to the photo on this page.
if it has screws and wires connected under the #3 and #4 positions it is a 220/230 timer
By the way the photo on this page is actually a 110/115 volt timer :)
Most pumps have the ability to be connected to either 115 or 230, they don't use both.
230 is preferred, especially if the pump is a far distance from the meter.
inside the
Read More
Look at the timer you have now and compare it to the photo on this page.
if it has screws and wires connected under the #3 and #4 positions it is a 220/230 timer
By the way the photo on this page is actually a 110/115 volt timer :)
Most pumps have the ability to be connected to either 115 or 230, they don't use both.
230 is preferred, especially if the pump is a far distance from the meter.
inside the motor is a way to connect it for 115 operation.
Most pools have 2 breakers: A two pole (20A/30A)for the pump/timer(220v), and A single(15A/20A) for the light(115v).
Some shade tree electricians can hook up a 115 timer on one leg of the 220 circuit, this works but is unsafe.
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Asked by
Maurice, LA
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April 14, 2015
Answer: 
Yes, this timer is rated for 230V. Just make sure your pumps are set the same.
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March 13, 2015
Answer: 
Yes, this timer is appropriate for use with a 230V pump and can be used for your application. You can also use the PE153 3-circuit electronic pool timer which has additional features and safeguards for 2-speed pumps, heater interlock ("fireman's switch"), filter/cleaner scheduling etc. and is available with a freeze guard option (PE153F). Your Home Depot representative can special order these and any Read More
Yes, this timer is appropriate for use with a 230V pump and can be used for your application. You can also use the PE153 3-circuit electronic pool timer which has additional features and safeguards for 2-speed pumps, heater interlock ("fireman's switch"), filter/cleaner scheduling etc. and is available with a freeze guard option (PE153F). Your Home Depot representative can special order these and any other of our products, if they are not stocked at their store. Details can be found on our website www.Intermatic.com Read Less
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2 answers

Will the Intermatic # t104r serve as a direct replacement for a Paragon # 1015 00 rs?

This question is from T100 Series 40 Amp 208-277-Volt DPST 24 Hour Mechanical Time Switch Mechanism
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July 31, 2016
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Home Improvement Profile: DIYer
August 10, 2016
Answer: 
it will and i think you will be happy with it, it's a great on/off timer, but this model is not made for sprinklers FYI
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August 1, 2016
Answer: 
No, this Paragon timer has a "skip a day" feature and is multi-voltage. You could use the T1975R (120v) or T1976R (208-277v) which do have the skip-a-day feature and captive trippers like the Paragon. Note these timers are single-voltage, so choose the model for the voltage the timer is controlling. These are typically not stocked, but can be ordered from Home Depot.
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Customer Reviews

T100 Series 40 Amp 208-277-Volt DPST 24 Hour Mechanical Time Switch Mechanism is rated 4.6 out of 5 by 42.
Rated 5 out of 5 by from Excellent replacement timer switch mechanism. The T104M Series 40 Amp 208-277-Volt DPST 24 Hour M... Excellent replacement timer switch mechanism. The T104M Series 40 Amp 208-277-Volt DPST 24 Hour Mechanical Time Switch Mechanism is the perfect, simple and quick replacement for T104, T104P, T104R, WH40 and T104PCD82 timer mechanisms. My mechanism was over 20 years old and the timer motor stopped running. I bought this replacement, shutoff the breakers, tested to make sure there was no current and then the easy change out was done in less than 5 minutes. The old mechanism "snaps" out and the new one "snaps" in. With the old one hanging in front of the new one by the wires, it is easy to just transfer one wire from old to new timer at a time, mistake proofing which wires go where. Set the timer to the correct time, added the on and off triggers, turned the power back on and I was back in business. Replacing this is as easy as replacing a simple wall light switch. Great product design.
Date published: 2016-11-06
Rated 5 out of 5 by from Ease of installation Very accommodating I hooked up the pool pump, the polaris, the pool hea... Ease of installation Very accommodating I hooked up the pool pump, the polaris, the pool heater and freeze power lines. Everything works accurately and does what it's supposed to do. We have had it about 10 days, just in time for the freeze, which it worked very well, for a 29 hour duty. The whole mechanism works beyond my expectations as I thought I was in for some complicated wiring. Fortunately the schematics were on the door of the utility box, my safety experience with electricity came in handy, and do not have a worry about this products performance. Thanks for the delivery on time so didn't have to worry about the pool and weather we just experienced. Gordon Brown Red light indicates the freeze control is on, which automatically cuts off as temperature rises over 32. I have a photo in my camera but don't have an adapter to put on computer if you send me an email I can put it on
Date published: 2016-12-20
Rated 4 out of 5 by from Timer switch for my Pool Filter This timer matches exactly with my old one which is also 220V. The old one was easy to be removed. Just make sure you mark down all the wires connecting to the old one when disconnecting the old timer.
Date published: 2016-08-10
Rated 2 out of 5 by from The one I bought last year failed and had to be replaced. The warranty is only 1 year so it was ... The one I bought last year failed and had to be replaced. The warranty is only 1 year so it was not covered. Really expected it to last longer.
Date published: 2016-12-10
Rated 4 out of 5 by from pool pump timer I actually haven't installed this yet, but have used the same timers for decades in industrial applications, should work just fine.
Date published: 2016-08-22
Rated 5 out of 5 by from 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
Date published: 2016-12-09
Rated 5 out of 5 by from back in service and good as new Replacement for timer that quit on me, pump is running again on set schedule.
Date published: 2016-11-15
Rated 4 out of 5 by from It was an exact replacement. It worked for the water heater. It was an exact replacement. It worked for the water heater.
Date published: 2016-12-28
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