Resideo RT850T-347 Relay
The Resideo RT850T-347 Relay is a heavy-duty solid state relay engineered specifically for controlling line voltage resistive loads in electric heating applications. Featuring a built-in 24 V transformer, this unit simplifies the control of baseboard heaters, radiant ceilings, and duct heaters from a low-voltage thermostat. The TRIAC switching ensures 100% silent operation, eliminating the mechanical clicking common in traditional contactors, making it ideal for noise-sensitive residential environments. This relay is rated for 23 A at 347 VAC and is compatible with both 2-wire and 3-wire thermostats, including modern electronic models. For maximum comfort and precision, the RT850T-347 supports short-cycle thermostats with 15-second cycles, providing stable temperature regulation without the lag of thermal relays. A terminal board connection and a 4-inch by 4-inch electrical box mounting design facilitate quick integration into existing HVAC systems. An integrated LED indicator provides technicians with immediate visual confirmation of the heating command status during installation or troubleshooting.
Key Benefits- Quiet Operation: Solid state design prevents mechanical noise, perfect for bedroom or living area heating units.
- Universal Thermostat Compatibility: Works seamlessly with battery-operated, mechanical, or power-stealing 2-wire and 3-wire (R,C,W) thermostats.
- Precision Control: Compatible with fast-cycling thermostats (15-second cycles) to minimize temperature swings and increase occupant comfort.
- Reduced Install Time: Built-in transformer eliminates the need for an external low-voltage power source for the thermostat circuit.
- Reliable Diagnostics: Onboard LED signals when the relay is energized, streamlining field diagnostics for HVAC contractors.
- Can this relay be used with 240V or 208V systems? While optimized for 347V, the RT850T series includes specific models for different voltages; ensure your supply line matches the 347V rating of this specific unit for proper transformer performance.
- What is the maximum amperage this unit can handle? It is rated for a resistive load up to 23 Amps. Always verify your heater's total wattage against the rated amperage at 347V to prevent overloading.
- Does this relay require a specific mounting orientation? Yes, for proper heat dissipation, the relay must be mounted with the heatsink fins vertical or facing upwards in a standard electrical box.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $121.29
-65%$121.29
$42.45Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Resideo RT850T-347 Relay is a heavy-duty solid state relay engineered specifically for controlling line voltage resistive loads in electric heating applications. Featuring a built-in 24 V transformer, this unit simplifies the control of baseboard heaters, radiant ceilings, and duct heaters from a low-voltage thermostat. The TRIAC switching ensures 100% silent operation, eliminating the mechanical clicking common in traditional contactors, making it ideal for noise-sensitive residential environments. This relay is rated for 23 A at 347 VAC and is compatible with both 2-wire and 3-wire thermostats, including modern electronic models. For maximum comfort and precision, the RT850T-347 supports short-cycle thermostats with 15-second cycles, providing stable temperature regulation without the lag of thermal relays. A terminal board connection and a 4-inch by 4-inch electrical box mounting design facilitate quick integration into existing HVAC systems. An integrated LED indicator provides technicians with immediate visual confirmation of the heating command status during installation or troubleshooting.
Key Benefits- Quiet Operation: Solid state design prevents mechanical noise, perfect for bedroom or living area heating units.
- Universal Thermostat Compatibility: Works seamlessly with battery-operated, mechanical, or power-stealing 2-wire and 3-wire (R,C,W) thermostats.
- Precision Control: Compatible with fast-cycling thermostats (15-second cycles) to minimize temperature swings and increase occupant comfort.
- Reduced Install Time: Built-in transformer eliminates the need for an external low-voltage power source for the thermostat circuit.
- Reliable Diagnostics: Onboard LED signals when the relay is energized, streamlining field diagnostics for HVAC contractors.
- Can this relay be used with 240V or 208V systems? While optimized for 347V, the RT850T series includes specific models for different voltages; ensure your supply line matches the 347V rating of this specific unit for proper transformer performance.
- What is the maximum amperage this unit can handle? It is rated for a resistive load up to 23 Amps. Always verify your heater's total wattage against the rated amperage at 347V to prevent overloading.
- Does this relay require a specific mounting orientation? Yes, for proper heat dissipation, the relay must be mounted with the heatsink fins vertical or facing upwards in a standard electrical box.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
