Intermatic T100 Series 40 Amp 125 Volt DPST 24 Hr Electromechanical Time Switch with Indoor Enclosure-T103D89 - The Home Depot


Model # T103D89

Internet # 100089939

Store SKU # 983053

T100 Series 40 Amp 125 Volt DPST 24 Hr Electromechanical Time Switch with Indoor Enclosure

Intermatic T100 Series 40 Amp 125 Volt DPST 24 Hr Electromechanical Time Switch with Indoor Enclosure

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

$52.98 / each


Model # T103D89

Internet # 100089939

Store SKU # 983053

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
  • 2 HP Rating
  • Manual override
  • 40 Amps per pole
  • General purpose use - Lighting, pool heaters, air conditioning, fans, pumps and more
  • Sturdy drawn steel enclosure with gray powder coat paint finish
  • CSA certified in US and Canada

Info & Guides

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Assembled Depth (in.)  3 in  Assembled Height (in.)  7.8 in 
Assembled Width (in.)  5 in 
Amperage (amps)  40  Color Family  Gray 
Color/Finish  Gray  Electrical Features  Programmable 
Electrical Product Type  Timer  Indoor/Outdoor  Indoor 
Returnable  90-Day  Style  Dial 
Timer Type  Industrial Timer Switch  Voltage (volts)  125 
Wattage (watts)  5000 
Warranty / Certifications
Certifications and Listings  CSA Certified  Manufacturer Warranty  1 year 


Rated 4.2 out of 5 by 6 reviewers.
Rated 3 out of 5 by Good product, but misleading packaging Not cheap, but a solid product that will probably do what you want. The crux of my problem is illustrated in the ambiguous product title "T100 series". For what I bought, the box had a label that said T103, but the picture on the box looked like a T101. If you want a T103, I might rate this higher, but if you want a T101, beware that the picture on the box isn't what you're getting. The T101 is simpler to wire, and was what I wanted for putting a simple, single, 120V line on a timer. The T103 would probably have worked for my needs and had additional flexibility, with an additional pair of screws for a second line and load. The picture associated with this product shows a ground, a neutral, a line in and a line out. That's what was on the box. The product inside the box lacked a green ground screw, but also had a neutral, and TWO lines in and TWO lines out. The clock mechanism appeared connected to both the lines in. When I wired it, using the ground, neutral, and line 1 in/out, the clock didn't run. I am guessing I needed to move one of the clock wires from line 2 in to neutral, but I'm not an electrician and did not want to guess at what I need to do. I returned it, and bought a bona fide T101 elsewhere, and had no problem wiring it to make it work. February 4, 2014
Rated 5 out of 5 by Good quality timer Good quality heavy duty timer. This model is hard to find locally (even the HD stores dont carry it). Glad to see that we could still get it online with free shipping. February 19, 2013
Rated 5 out of 5 by It is what it is, a basic timer Nothing more, nothing less. These things are easy to install and last nearly forever. Could be cheaper... December 18, 2012
Rated 5 out of 5 by Works great I put one of these on my pool. i have upsized everything for the operation of my pool. However, when you do that, you also pay for it in electricity. So, I did some basic calculations andd figured out that the addition of my timer would not affect my water quality. It works perfectly! July 1, 2009
Rated 2 out of 5 by Easy Install, But.............. The timer failed after about 2 years. This will be my third timer. June 26, 2007
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