Resideo RT850 Relay
The Resideo RT850 Relay is a heavy-duty 120V TRIAC solid state relay engineered for contractors who require high-precision load management without the mechanical wear of traditional contactors. Designed specifically for electric heating applications like baseboard heaters, convectors, and radiant ceilings, this unit provides 100% silent operation. The solid state switching technology eliminates the "click" noise associated with mechanical relays, making it an ideal choice for noise-sensitive residential environments. This HVAC heating relay is compatible with 2-wire and 3-wire thermostats and handles resistive loads up to 23A. By utilizing zero-cross switching, the RT850 minimizes electrical interference and extends the life of the heating elements. Its dual-input capability allows it to be driven by a 24 VAC control signal or a 4 to 32 VDC signal source, offering maximum flexibility for various control systems. For optimal performance in electric heat control, technicians should pair this relay with short-cycle thermostats (15-second cycles) to achieve tighter temperature differentials and superior occupant comfort.
Key Benefits for the Jobsite:- Silent TRIAC Switching: Eliminates mechanical noise, providing a quiet solution for bedroom and living area heating zones.
- High Load Capacity: Rated for line voltage resistive loads up to 23A at 120V, making it a robust choice for heavy-duty electric heat.
- Versatile Control Inputs: Accepts both 24 VAC and 4-32 VDC signals, ensuring compatibility with a wide range of modern and legacy thermostats.
- Visual Diagnostics: Integrates a built-in LED indicator for immediate visual confirmation of load switching during troubleshooting.
- Space-Saving Design: Compact form factor mounts easily in a standard 4x4 electrical box, simplifying retrofit and new construction installs.
Can I use the RT850 with a DC control signal?
Yes, the unit is designed with a dual-input circuit that recognizes 4 to 32 VDC signals in addition to standard 24 VAC signals.
Is a separate transformer required for this relay?
The RT850 does not include a built-in transformer. You must provide an external 24 VAC power source to the thermostat loop if one is not already present in the system.
Does this relay support pulse-width modulation (PWM) thermostats?
It is specifically designed to handle the high frequency of short-cycle (15-second) thermostats, which provides a near-modulating effect for resistive heating elements.
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: $87.24
-65%$87.24
$30.53Resideo RT850 Relay
The Resideo RT850 Relay is a heavy-duty 120V TRIAC solid state relay engineered for contractors who require high-precision load management without the mechanical wear of traditional contactors. Designed specifically for electric heating applications like baseboard heaters, convectors, and radiant ceilings, this unit provides 100% silent operation. The solid state switching technology eliminates the "click" noise associated with mechanical relays, making it an ideal choice for noise-sensitive residential environments. This HVAC heating relay is compatible with 2-wire and 3-wire thermostats and handles resistive loads up to 23A. By utilizing zero-cross switching, the RT850 minimizes electrical interference and extends the life of the heating elements. Its dual-input capability allows it to be driven by a 24 VAC control signal or a 4 to 32 VDC signal source, offering maximum flexibility for various control systems. For optimal performance in electric heat control, technicians should pair this relay with short-cycle thermostats (15-second cycles) to achieve tighter temperature differentials and superior occupant comfort.
Key Benefits for the Jobsite:- Silent TRIAC Switching: Eliminates mechanical noise, providing a quiet solution for bedroom and living area heating zones.
- High Load Capacity: Rated for line voltage resistive loads up to 23A at 120V, making it a robust choice for heavy-duty electric heat.
- Versatile Control Inputs: Accepts both 24 VAC and 4-32 VDC signals, ensuring compatibility with a wide range of modern and legacy thermostats.
- Visual Diagnostics: Integrates a built-in LED indicator for immediate visual confirmation of load switching during troubleshooting.
- Space-Saving Design: Compact form factor mounts easily in a standard 4x4 electrical box, simplifying retrofit and new construction installs.
Can I use the RT850 with a DC control signal?
Yes, the unit is designed with a dual-input circuit that recognizes 4 to 32 VDC signals in addition to standard 24 VAC signals.
Is a separate transformer required for this relay?
The RT850 does not include a built-in transformer. You must provide an external 24 VAC power source to the thermostat loop if one is not already present in the system.
Does this relay support pulse-width modulation (PWM) thermostats?
It is specifically designed to handle the high frequency of short-cycle (15-second) thermostats, which provides a near-modulating effect for resistive heating elements.
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.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
The Resideo RT850 Relay is a heavy-duty 120V TRIAC solid state relay engineered for contractors who require high-precision load management without the mechanical wear of traditional contactors. Designed specifically for electric heating applications like baseboard heaters, convectors, and radiant ceilings, this unit provides 100% silent operation. The solid state switching technology eliminates the "click" noise associated with mechanical relays, making it an ideal choice for noise-sensitive residential environments. This HVAC heating relay is compatible with 2-wire and 3-wire thermostats and handles resistive loads up to 23A. By utilizing zero-cross switching, the RT850 minimizes electrical interference and extends the life of the heating elements. Its dual-input capability allows it to be driven by a 24 VAC control signal or a 4 to 32 VDC signal source, offering maximum flexibility for various control systems. For optimal performance in electric heat control, technicians should pair this relay with short-cycle thermostats (15-second cycles) to achieve tighter temperature differentials and superior occupant comfort.
Key Benefits for the Jobsite:- Silent TRIAC Switching: Eliminates mechanical noise, providing a quiet solution for bedroom and living area heating zones.
- High Load Capacity: Rated for line voltage resistive loads up to 23A at 120V, making it a robust choice for heavy-duty electric heat.
- Versatile Control Inputs: Accepts both 24 VAC and 4-32 VDC signals, ensuring compatibility with a wide range of modern and legacy thermostats.
- Visual Diagnostics: Integrates a built-in LED indicator for immediate visual confirmation of load switching during troubleshooting.
- Space-Saving Design: Compact form factor mounts easily in a standard 4x4 electrical box, simplifying retrofit and new construction installs.
Can I use the RT850 with a DC control signal?
Yes, the unit is designed with a dual-input circuit that recognizes 4 to 32 VDC signals in addition to standard 24 VAC signals.
Is a separate transformer required for this relay?
The RT850 does not include a built-in transformer. You must provide an external 24 VAC power source to the thermostat loop if one is not already present in the system.
Does this relay support pulse-width modulation (PWM) thermostats?
It is specifically designed to handle the high frequency of short-cycle (15-second) thermostats, which provides a near-modulating effect for resistive heating elements.
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.
