0078275123878

Intermatic

Model # WH40DL3

Internet # 203557614

Store SKU # 700794

40-Amp 240-Volt Electric Water Heater Time Switch

$54.00 /each
  • Convenient external override switch
  • NEMA 1 rated indoor steel enclosure
  • Residential, commercial, industrial, military,school applications

FREQUENTLY BOUGHT TOGETHER

PRODUCT OVERVIEW

Model # WH40DL3

Internet # 203557614

Store SKU # 700794

The WH40 Mechanical Water Heater Time Switch regulates electric water heaters. Utilities in many areas of the country offer two electric rates for residential or commercial customers. One rate has the regular daytime rate, the other is the 'off-peak' rate. This 'off-peak' rate provides customers with lower priced electricity during the nighttime and weekend periods. This time switch allows the customer to shift electricity use into the 'off-peak' time periods in an attempt to save utility costs.

  • Double pole, single throw
  • Convenient external override switch
  • NEMA 1 rated indoor steel enclosure
  • CSA listed
  • For use in residential, commercial, industrial, military, and school applications
  • Additional sets of trippers are available - #156T1978A

Info & Guides

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SPECIFICATIONS

Dimensions
Product Depth (in.) 
Product Height (in.) 
7.8 
Product Width (in.) 
Details
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) 
240 
Wattage (watts) 
10000 
Warranty / Certifications
Certifications and Listings 
1-UL Listed,CSA Certified 
Manufacturer Warranty 
1 year 

MORE PRODUCTS WITH THESE FEATURES

Timer Type: Industrial Timer Switch
Indoor/Outdoor: Indoor
Color Family: Gray
Electrical Features: Programmable
Brand: Intermatic
Price: $50 - $100
Review Rating: 4 & Up
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6 Questions14 Answers

Customer Questions & Answers

40-Amp 240-Volt Electric Water Heater Time Switch
40-Amp 240-Volt Electric Water Heater Time Switch

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5 answers

Is this timer a plug in style? Can this timer be used on a recirculating hot water heater pump

This question is from 40-Amp 240-Volt Electric Water Heater Time Switch
Asked by
Kerrville Texas
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December 3, 2014
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Answers (5)

Asked by
Cape Coral, Fl
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Home Improvement Profile: DIYer
March 23, 2016
Answer: 
The unit itself does not have a plug. Purchase the correct plug (220) and wire it into the unit. Then wire the unit to the water heater.
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Asked by
Lake Ariel, PA
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June 9, 2015
Answer: 
This is not a plug-in style. It needs to be hard-wired to the 220V circuit breaker for your hot water heater. Yes, it can be used with a recirculating hot water heater pump but I would not recommend it. You will not save any electricity by connecting to a heat pump hot water set-up.
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January 6, 2015
Answer: 
Dear Valued HomeDepot Customer,
We reached out to the MFG for more information and below is their response.
"No, this timer is only meant to be hardwired and is not a portable unit."
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December 29, 2014
Answer: 
Dear Valued HomeDepot Customer,
We reached out to the MFG for more information and below is their response.
"We would be happy to talk directly with you to determine the correct timer to use for your specific application. Please call our Technical Support department at 815-675-2321, Thanks you"
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December 5, 2014
Answer: 
Dear Valued HomeDepot Customer,
We reached out to the MFG for more information and below is their response.
"The WH40DL3 is not a plug-in timer. It is hardwired. A better choice for your heater pump application would be the TN311K as it has a 1Hp rating."
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4 answers

wire melting?

This question is from 40-Amp 240-Volt Electric Water Heater Time Switch
Asked by
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January 20, 2016
I have had two of these at two different residences and after 5+ years of service the wires have melted at the connection terminals inside the gray box.
User submitted photo
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Answers (4)

Asked by
Cape Coral, Fl
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Home Improvement Profile: DIYer
March 23, 2016
Answer: 
If the wires are NOT tightened down fully, they will get hot and can melt wires...
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Asked by
Tacoma, WA
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Home Improvement Profile: DIYer
March 5, 2016
Answer: 
In addition to the excellent advice of the others I'd suggest keeping the insulation off of the metal terminals per instructions. I"m glad you asked this. I just installed this timer and I will definately check the terminal screw tightness from time to time. BTW I asked the Home Depot plumbing guy about these and he didn't know what I was talking about. I found a few different kinds in with the timers Read More
In addition to the excellent advice of the others I'd suggest keeping the insulation off of the metal terminals per instructions. I"m glad you asked this. I just installed this timer and I will definately check the terminal screw tightness from time to time. BTW I asked the Home Depot plumbing guy about these and he didn't know what I was talking about. I found a few different kinds in with the timers but I suggest that The Home Depot stock a couple near the water heaters. I'd have bought one long ago if I'd have seen it there. I buy things like that on impulse. Just a suggestion. Thanks for having such a great money saving product in stock! Read Less
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Asked by
Arizona
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Home Improvement Profile: Professional
February 23, 2016
Answer: 
Do you know the gauge of the wire being used? It may be insufficient for the load ! I would recommend 10-12 gauge solid wire. Is the product being used for the recommended purpose and not exceeding the manufactures current rating?
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January 21, 2016
Answer: 
This is most likely an indication of loosened connections which can result from thermal cycling over time, from mixing solid and stranded wires under the same terminal, from placing two wires under one side of a screw clamp (which tilts the clamp and allows it to loosen), or insufficient tightening of the terminal screw. Connections should be checked and retightened periodically.
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2 answers

clock does not move

This question is from 40-Amp 240-Volt Electric Water Heater Time Switch
Asked by
JAX BCH FL
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September 19, 2015
I HAVE HAD ONE OF THESE WORKING FOR 20 + YEARS BUT NOW THE TIMER DOES NOT WORK TO TURN THE SWITCH ON.
IS THER A FUSE IN IT TO MAKE THE CLOCK WORK OR DO I NEED A NEW ONE????????
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Answers (2)

Asked by
Arizona
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Home Improvement Profile: Professional
February 23, 2016
Answer: 
The clock mechanism just needs to be replaced. they can gum-up after quite some time or just fail. 20+ years is very good! I would contact the store or the manufacturer directly and see want a replacement clock mechanism is priced at.
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September 21, 2015
Answer: 
After 20+ years, the clock motor as well as other parts can wear out and will need to be replaced.
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1 answer

Is this the correct time clock for my application?

This question is from 40-Amp 240-Volt Electric Water Heater Time Switch
Asked by
Boca Raton FL
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April 18, 2016
We have FPL's on call on our hot water heater so I can't impede it's operation. but I want to put this time clock after their on call system where they can shut the power off to my hot water heater periodically. I want to restrict it even more so I can shut it off even if they have already shut it off so the time clock needs to be between their system and the hot water heater. I only have two leads and a ground coming from their system so do I place each one of them on terminal 1 (Line) & terminal 3 (Line) then the new wires from the new wire whip to the hot water heater to terminal 2 (load 1) and terminal 2 (load 2) grounding both ovbiously?
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Answer (1)

April 20, 2016
Answer: 
The timer's motor must be powered constantly, or it stop and will fall behind during the FPL system OFF times. So you cannot place this timer after the FPL system.
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CUSTOMER REVIEWS

Rated 4.3 out of 5 by 31 reviewers.
Rated 5.0 out of 5.0 by Direct Replacement The labeling was accurate and complete. The diagrams were large and easy to follow. The timer was the direct replacement , mounting holes and knockouts were the correct size. April 26, 2016
Rated 4.0 out of 5.0 by Good timer, got noisy after approx 2 yars Easy assembly and hook up. It was very, very quiet up until last week, about 2 years old. I started looking for a new drive motor but couldn't find one. I ended up, pulling the unit apart (one spring clip at the top, inside) and spray the moving gears with lithium spray grease. That made the unit nice and quiet again!!! March 23, 2016
Rated 5.0 out of 5.0 by Great product Was perfect for the application. Straight forward installation. May require additional conduit and wire. Electrical knowledge a must, especially if additional wiring is required. February 23, 2016
Rated 4.0 out of 5.0 by water heater timer Currently using this timer to turn on and off a hanging 240v 30A heater in my garage and has been working great for last 2 months. January 5, 2016
Rated 5.0 out of 5.0 by very good item easy to install and good directions to go by and works good August 25, 2015
Rated 5.0 out of 5.0 by Good product. It was easy to install and is working as advertised. August 4, 2015
Rated 3.0 out of 5.0 by Works okay but... Instructions were pretty vague. Illustration(s) and graphics were barely adequate. The ON/OFF switch does not fit well through door slot. Mechanical timer is kind of obsolete. Door is hard to close. All in all, it works as intended but the overall design and workmanship leave something to be desired. June 9, 2015
Rated 3.0 out of 5.0 by Disappointed with purchase Not using latest timer and control technology. Time setting pointers tend to come loose in use April 7, 2015
  • 2016-05-19 T15:53:36.790-05:00
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