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Stelpro 24V Low Voltage Electromechanical Relay w/o Transformer, External Input

Stelpro RM347C
SKU STP-RM347C
Stelpros electromechanical relays with a transformers provide basic on and off controls to most Stelpro HVAC products. Shop our full selection of Stelpro accessories and HVAC products at HomElectrical.com today!
Stelpro 24V Low Voltage Electromechanical Relay w/o Transformer, External Input

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Stelpros electromechanical relays with a transformers provide basic on and off controls to most Stelpro HVAC products. Shop our full selection of Stelpro accessories and HVAC products at HomElectrical.com today!
cUL/UL Listed

Stelpro 24V Low Voltage Electromechanical Relay w/o Transformer, External Input features:

  • Has a 1 year limited time warranty.
  • Up to 6000W at 347V.
  • Compatible with T822K1032, T87K1015 and ET180 thermostats.
  • Do not install more than four relays without a transformer to the same thermostat.
  • You cannot connect relays to the same control circuit as a relay with a transformer.
  • Installation: relays can be installed in an external junction box.
  • These relays may or may not be installed in the junction box of the heating unit.
  • Certifications: cUL/UL Listed.
cUL/UL Listed

Stelpro RM347C Description

cUL/UL Listed

Stelpro 24V Low Voltage Electromechanical Relay w/o Transformer, External Input features:

  • Has a 1 year limited time warranty.
  • Up to 6000W at 347V.
  • Compatible with T822K1032, T87K1015 and ET180 thermostats.
  • Do not install more than four relays without a transformer to the same thermostat.
  • You cannot connect relays to the same control circuit as a relay with a transformer.
  • Installation: relays can be installed in an external junction box.
  • These relays may or may not be installed in the junction box of the heating unit.
  • Certifications: cUL/UL Listed.
cUL/UL Listed
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Ships free on orders over $500 of eligible items to all guests.
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$131.20Each

Ships between 05/04/2026 - 06/02/2026

Product Specifications

Part NumberRM347C
CertificatecUL/UL Listed
Maximum Voltage347V
Warranty1 Yr
Wattage6000W
Product Dimensions3.94-in X 2.66-in X 1.63-in
Weight3.00-lb
UPC626296284537

Manufacturer Description

ELECTROMECHANICAL RELAY WITHOUT TRANSFORMER 347/24V - EXTERNAL INPUT 24V
Prop65
Important PROP 65 InformationWarning: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov. to CA residents.
Stelpros electromechanical relays with a transformers provide basic on and off controls to most Stelpro HVAC products. Shop our full selection of Stelpro accessories and HVAC products at HomElectrical.com today!
Stelpro 24V Low Voltage Electromechanical Relay w/o Transformer, External Input
cUL/UL Listed
Unlock FREE Shipping by just signing in!
Ships free on orders over $500 of eligible items to all guests.
Free Shipping Eligible
$131.20Each

Ships between 05/04/2026 - 06/02/2026

Stelpro RM347C Description

Stelpro 24V Low Voltage Electromechanical Relay w/o Transformer, External Input features:

  • Has a 1 year limited time warranty.
  • Up to 6000W at 347V.
  • Compatible with T822K1032, T87K1015 and ET180 thermostats.
  • Do not install more than four relays without a transformer to the same thermostat.
  • You cannot connect relays to the same control circuit as a relay with a transformer.
  • Installation: relays can be installed in an external junction box.
  • These relays may or may not be installed in the junction box of the heating unit.
  • Certifications: cUL/UL Listed.

Product Specifications

Part NumberRM347C
CertificatecUL/UL Listed
Maximum Voltage347V
Warranty1 Yr
Wattage6000W
Product Dimensions3.94-in X 2.66-in X 1.63-in
Weight3.00-lb
UPC626296284537

Manufacturer Description

ELECTROMECHANICAL RELAY WITHOUT TRANSFORMER 347/24V - EXTERNAL INPUT 24V
Prop65
Important PROP 65 InformationWarning: This product can expose you to chemicals, which are known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, go to www.p65warnings.ca.gov. to CA residents.

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