Aube RC840T-240 On/Off Switching Electric Heating Relay with Built-in 24 V Transformer
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Aube RC840T-240 On/Off Switching Electric Heating Relay with Built-in 24 V Transformer

Relay is Compatible with Low Voltage Thermostats to Improve Temperature Control and Comfort
  • Direct replacement for any brand name relay
  • Built-in 24 V transformer for easy installation
  • Compatible with 24 V thermostats with 2-wire connections (R, W) or 3-wire connections (R, W, C)
  • Immediate relay activation provides improved temperature control and comfort
  • Epoxy-soundproofed relay ensures quiet operation
  • Low current consumption means multiple relays can be controlled by a single thermostat
  • Heating command indicator light gives at-a-glance verification of relay operation
  • Terminal board connection enables easy installation

Item #: 300612T

Product is on backorder

Special Price: $34.31

List Price: $57.03

Your Savings: $22.72

  • Details
  • Specs
  • Reviews
  • Manuals
  • What's Included
  • The RC840T Electric Heating Relay is designed to control a line voltage resistive load from a low voltage thermostat. The RC840T relay has a built-in 24 V transformer and is compatible with 3-wire (R,C,W) thermostats as well as 2-wire mechanical and battery-operated thermostats. The RC840T operates silently and can be installed in bedrooms, living rooms, or any other occupied area without disturbing occupants. On a call for heat, the relay is immediately activated; there is no delay. This increases temperature control and comfort.



  • Specifications
    Manufacturer Aube
    Manufacturer Product No RC840T-240
    UPC 775264094620
    Voltage (VAC) 240V
    Resistive load (A) 22A
    Inductive load (HP) 1.5
    FLA 12
    LRA 42
    Control signal 24 VAC / 40 mA / 1.2 VA
    Transformer Ratings 24 VAC / 1.2 VA / Class 2
    Ambient Operating Temperature -4°F to 140°F (-20°C to 60°C)
    Ambient Storage -40°F to 175°F (-40°C to 80°C)
    Humidity Limits 0 to 95% non-condensing
    Net Weight 11.5 oz. (326 g)
    Terminal Wire Size 12 AWG
    Certification cULus


  • Reviews 1 - 10 of 41

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    Review of 300612T Review by NEIL
    Review of 300612T
    Rating

    Good - installed with a Honeywell WiFi thermostat. Basic operational test only.

    Posted on 6/29/2014

    Review of 300612T Review by MICHAEL
    Review of 300612T
    Rating

    Easy to use, self documented, works fine. Would be nice to see it's solid-state alternative offered side-by-side.

    Posted on 6/8/2014

    Review of 300612T Review by DAVID
    Review of 300612T
    Rating

    fit well, seems robust construction, good price.

    Posted on 4/16/2014

    Review of 300612T Review by Rolleston Electric
    Review of 300612T
    Rating

    If you are using this for more than the 22 amps you must use a contactor and just use the nest to power the contactor and let the contactor handle the load. I have done this a few times. A 10,000 watt load will burn these units up because it's 42 amps close to twice what they can handle.

    Posted on 4/2/2014

    Review of 300612T Review by BRENT
    Review of 300612T
    Rating

    Very happy with my purchase. They worked as I planned.

    Posted on 3/7/2014

    Review of 300612T Review by JOACHIM
    Review of 300612T
    Rating

    works perfectly with my Nest Thermostat installed in Germany.

    Posted on 3/6/2014

    Review of 300612T Review by CINDY
    Review of 300612T
    Rating

    Oh,my gosh, thankyou so much for the quick delivery. this relay is exactly what we needed. now we know where to order from for other needs. Keep up the good work!!!!A 5 star rating for sure!!!!!!!!!!!!!!!!!!!!

    Posted on 2/28/2014

    Review of 300612T Review by SCOT
    Review of 300612T
    Rating

    Works great with my Nest and a baseboard heater.

    Posted on 2/20/2014

    Review of 300612T Review by ROBERT
    Review of 300612T
    Rating

    Shipped fast, thanks. nice product, especially liked the extra touch of a pilpt lamp to indicate "on". Pricing was on the expensive side.

    Posted on 2/18/2014

    Review of 300612T Review by RIKARD
    Review of 300612T
    Rating

    Works really well - using this allowed me to instal Nest with 240 Volt baseboard heater, and my electricity consumption halved immediately

    Posted on 2/18/2014

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