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RC840T-240 Honeywell Aube Transformer / Mechanical Relay - 208/240 Volt - 24VAC Output
Honeywell Aube Programmable Thermostat

RC840T-240 Honeywell Aube Transformer / Mechanical Relay - 208/240 Volt - 24VAC Output

Your Price: $78.05
Part Number:RC840T-240

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RC840T - 240 Honeywell Aube Transformer / Relay 

The RC840 Electric Heating Relay is designed to control a line voltage resistive load from a 24 V control signal. The RC840 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.


  • Compatible with 24 V thermostats 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

  • Electromechanical Relay Output - 19 and 22 Amp Rating (Amperage Loads Vary Dependent On Voltage Source)

  • 24 VAC Output

  • 2640 Watts @ 120 VAC,  4575 Watts @ 208 VAC, 5280 Watts @ 277 VAC

  • Dimensions - 68 x 85 x 36 mm, 2.7 x 3.3 x 1.4 in.

5 Stars
Great deal. Worked great for the job I had to do.
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Reviewed by:  from on 11/16/2013