Aube RC840T-240 On/Off Switching Electric Heating Relay with Built-in 24 V Transformer
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Rewards: 34 Points

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


  • 10 Reviews

    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 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 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

    Review of 300612T Review by DALE
    Review of 300612T
    Rating

    WIFI electric baseboard thermostat works well. I raise the temp an hour before I go home on my android phone. The android or PC software for Honeywell's WIFI thermostats are great for programming schedules into the thermostats.

    Took a little bit to figure out which wire went where and I had to put a bigger junction box in than the baseboard thermostat had.

    Posted on 2/8/2014

    Review of 300612T Review by garry
    Review of 300612T
    Rating

    i have a 4800 watt construction heater suspended from the roof of my insulated garage the thermostat worked fine but was in a awkward position to adjust we had an old mercury style thermostat laying around from when we had ac installed so finding this relay at a cost effective price is the cats ass smarthome shipped this the same day i ordered it and received it 8 business days later kudos us postal and canada post

    Posted on 1/25/2014

    Review of 300612T Review by Gordo
    Review of 300612T
    Rating

    This was exactly what I needed to control 2 electric baseboard heaters with a Nest thermostat. I got the one with the built in transformer, because the Nest works best if it has a 'C' wire, which this relay provides. You'll need a 3-conductor cable between this relay and the Nest.

    Posted on 1/3/2014

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