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Touch Plate Low Voltage 3000 Relay

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Single pole, single throw (SPST) Touch-Plate 3000 low voltage mechanical latch relay for Touch-Plate low voltage lighting systems can be used as an updated replacement part for older Touch-Plate low voltage systems that were installed from the 1940s to the 1980s. Specifically, this replacement 2-wire relay (model 3000) may be used to replace discontinued 1550-A, 1550-B, 2500-B, and 4000 Touchplate relays. 


  • 7" lead length, wire leads without plug (see the TPL-300PL if your relay plugs into the panel)
  • black base: 1-7/8" L (terminal side) x 1-11/16" W x 31/32" H
  • 1.75" H x 1" diameter cylinder; overall height from bottom of black base to top of cylinder is 2-3/4"
  • cylinder is offset on base; center of cylinder is 9/16" from long edge (non-terminal side, back edge in photo) and 3/4" from the short side (left side in photo)
  • includes 1" I.D. x 1/2" thick rubber grommet shown in photo
  • 120/277/347 VAC 20 amp contact rating
  • 1.0 HP 125 VAC, 20 A 125 VAC Tungsten
  • 1.5 HP 250 VAC, 20A 277 VAC Ballast
  • auxiliary contact rating of 1 amp at 30 volts, Tungsten
  • constructed of silver alloy
  • 3000 / 4000 relay base is 1" larger than older models 1550-A, 1550-B, 2500-B
  • made in America; 1-year manufacturer warranty
  • current replacement for Touchplates' old 1550A, 1550B, 2500B, and 4000 relays

Shop more authentic Hard-To-Find Touch-Plate Low Voltage Switches & Switch Plates from Kyle Switch Plates.

Q & A

Q. I hear a noisy buzz sound coming from my relay. Does this mean my relay needs to be replaced?
If you hear a hissing noise coming from your relay, this means your relay needs to be replaced or the switch connected to that relay needs to be replaced. To determine which part is faulty, connect a working switch from a different area of your home to the switch that is connected to the buzzing relay. If the relay continues to buzz, then you know the relay needs to be replaced. If the relay stops buzzing, then you know the switch needs to be replaced.

Q. Can I substitute a GE or Remcon relay in my Touch Plate system?
No. The relays are too different. Touch-Plate relays are single coil, 28DVC latching relays whereas GE relays are dual coil and Remcon relays are single or dual coil with internal power supplies.

Q. My old 1550A relay had four wires coming out of it - two from the top of the cylinder and two from the bottom block. How do I install it with this replacement 3000 relay that only has two wires?
The old 1550A, 1550B, and 2500B relays had two low voltage wires coming out of the top cylinder that you would connect to your switches. The two wires coming out of the bottom were the ones you connected to the high voltage wires coming out from your wall electrical system. These new relays have screw terminals that eliminate the need to twist together and cap off the two sets of wires. You just attach the high voltage wires to the new screw terminals on the bottom block of the relay. This is a safer, more secure way to connect the wires than on the older relays. Because the high voltage connections are not polarized, it doesn't matter which way you connect the two high voltage wires to the two screw terminals - both terminals are the same, so either one can have the hot feed and the other the switch leg. Note that the bases on these new 3000 relays are a bit larger than the old ones so they might be a bit of a tight fit in the relay panel. If necessary, move the older relays to the back row and use the new 3000 relays in the front row where there is more room.

Q. My Touch-plate relay says it is 12 VDC, but replacement relays are 28V. Can I use these 3000 relays with them?
Yes. For a period of time in the past Touch-Plate was marking their relays with the lower voltage, even though they really had a higher voltage. Some were labeled as 12 VDC; others 14 VDC. But all Touch plate systems have always worked with 28 VDC transformers and transverters. (If you wish to confirm this on your end, simply check the output voltage on your unit.) So you may safely use a 3000 relay to replace a Touch Plate relay marked as 12V or 14V, and may use a new TPS-0120 transformer with either the new or the old relays.

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Product Reviews

  • D
    Dave Sjaardema Verified Buyer
    20th Jan 2021
    TouchPlate 3000 Low Voltage Relay

    I am very happy with Kyle Switch Plates. Their prices are reasonable, I have always received quality working products. They have a great stock of the low voltage items that are very difficult to find. The parts I have ordered always come quickly. Thank you.

  • W
    William Register Verified Buyer
    1st Jan 2021

    Replaced twenty year+ old relays that keep kicking breakers. Worked like a champ.

  • K
    Kelly Verified Buyer
    11th Sep 2020
    Great replacement

    Switch works great. Fast shipping! Will purchase from again. Thank you!

  • A
    Anonymous Verified Buyer
    10th Jan 2020
    Perfect replacement

    The relay is an upgrade and replacement that worked perfectly. Ordering was easy. Shipping was fast. Great service.

  • C
    cembergirl Verified Buyer
    15th Jul 2019
    Thanks so much

    I live in Anaheim,CA and the electrical store I bought my relays from closed. Searching for a new store I found your website. My first order was easy to order and arrived within a week. My house is all low voltage. We will be ordering a lot more in the future. Thanks again.

  • A
    Anonymous Verified Buyer
    30th Apr 2019
    Great, quick servie

    The relay was a replacement for an earlier style and worked perfectly and as advertised.

  • C
    Corey Verified Buyer
    10th Apr 2019
    Great replacement product!

    Needed a replacement for a relay in my original system and it was sent in a timely manner and works perfectly.

  • B
    BARRY ZITOMER Verified Buyer
    26th Jan 2019
    Superior Company

    Their switches and plates are of high quality. Shipping is fast and their representatives could not be more helpful.

  • A
    Anonymous Verified Buyer
    30th Oct 2018
    low voltage relay

    Quick service and a great product

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