Message to Our Customers


Model # T104RD89

Internet # 203569316

Store SKU # 807478

40 Amp 208-277 Volt 24 Hour DPST Mechanical Time Switch with Outdoor Enclosure

This item has been discontinued.
The Home Depot no longer carries this specific product.

$68.98 /  each


Model # T104RD89

Internet # 203569316

Store SKU # 807478

Intermatic is dedicated to providing energy conscious solutions and this time switch is designed for industrial, commercial and residential applications. It has the highest motor load rating in the industry. The original 'yellow dial' timer is just one product Intermatic offers for all your energy control needs.

  • Provides up to 12 on/off operations per day with minimum on/off times of 1 hour
  • 5 HP Rating
  • 40 Amps per pole
  • CSA Certified in US and Canada
  • General purpose use - lighting, pool heaters, air conditioners, fans, pumps and more
  • Sturdy NEMA 3R drawn steel case for outdoor use protects time switch from rain, sleet, snow and ice

Info & Guides

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Product Depth (in.) 
Product Height (in.) 
Product Width (in.) 
Amperage (amps) 
Color Family 
Electrical Features 
Programmable,Rust Resistant 
Electrical Product Type 
Outdoor Lighting Features 
Timer,Weather Resistant 
Timer Type 
Industrial Timer Switch 
Voltage (volts) 
Wattage (watts) 
Warranty / Certifications
Certifications and Listings 
CSA Certified 
Manufacturer Warranty 
1 year 


Rated 4.4 out of 5 by 13 reviewers.
Rated 4.0 out of 5.0 by Works as Advertised Bought this yesterday to replace a 40+ year unit that finally died, it is used for turning power to a pump for the swimming pool. It was the same size as the old, this version is a lot easier to mount as you can easily out pull the timing controller to mount the box. The model number even matches the old one! That was convenient. I got it installed with no problems, hopefully this lasts just as long. Everything seems the same as the original. May 12, 2013
Rated 4.0 out of 5.0 by Great replacement, good selection, in stock I have used thier products before, and I knew how to install. I completed the job in thirty minutes and was very satisfief with the outcome. I will continue to use thier products. August 26, 2014
Rated 5.0 out of 5.0 by Just like the old one It was the same as the old one I had. Just pull out the old one and put in the new one. There is no reason why they couldn't have the clock module replaceable in this unit, like some of the others. But if it lasts for 20+ years, it will be well worth it. It only took me about 1/2 hour to switch everything out, even with fiddling with the mounting holes ! November 18, 2013
Rated 4.0 out of 5.0 by Great product We bought this one because we had to replace the one that we had been using for the past 13 yrs. Certainly a very good product. We never had a problem with the old one, it just quit working but we did have to replace a bunch of parts for our pool cleaning/pump system so I think that was the reason it started working. July 9, 2014
Rated 2.0 out of 5.0 by Robust, but gains time every day Ok, I installed this on my new pool equipment installation. Easy to install, enclosure very rugged. Now for the rest of the story. The time clock has been gaining 1-2 hours a day. Not good when your trying to control a pool pump during the day. I have e-mailed the tech support line at Intermatic....waiting on a reply. Might change rating to 5 stars depending on out come. May 6, 2014
Rated 5.0 out of 5.0 by Well-Made Product Fairly straight-forward product that is of great value March 4, 2014
Rated 5.0 out of 5.0 by exact replacement This was an exact replacement of what was there. The initial one lasted a long time, so I expect this one to last many years. It was easy and straight forward to replace. Only took me about 20 minutes to install. January 14, 2014
Rated 5.0 out of 5.0 by best product for the money. Easy to install and program I ordered online and picked up at store. This was a replacement for original unit that lasted 10 yrs. I had it installed within 30 min. December 25, 2013
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