Resideo RA889A1001 Switching Relay
The Resideo RA889A1001 Switching Relay is a heavy-duty solution for intermediate switching of line and low-voltage devices in hydronic heating systems. Engineered for 120Vac primary voltage, this relay features a Single Pole Double Throw (SPDT) configuration paired with a PowerPile rated low-voltage SPST relay, making it ideal for converting millivolt systems to modern 24V control. The integrated transformer secondary rating of 24Vac provides 9 VA for external loads, protected by a field-replaceable 1A automotive fuse. A built-in push-to-test button and troubleshooting LED allow technicians to verify operation instantly without external meters. Designed for high load switching capability, the contacts are rated for 15 Amp Full Load Amp (AFL) and 30 Amp Locked Rotor (ALR) at 120Vac. The rugged zinc-plated steel enclosure includes multiple knockouts for flexible conduit entry and service access.
Key Benefits
- Universal Modernization: Simplifies the upgrade of 750 mV PowerPile systems to programmable or WiFi thermostats.
- Internal Protection: Features a replaceable 1A automotive fuse to protect the transformer secondary from wiring shorts.
- Diagnostics: Troubleshooting LED and push-to-test functionality reduce diagnostic time on service calls.
- Environmental Resilience: Rated for ambient temperatures from -20°F to 120°F and 90% non-condensing humidity.
- Secure Wiring: Utilizes No. 8 captivated wire clamp screw terminals for reliable copper-to-copper connections.
Common Questions
Can I use this relay to replace an old Honeywell RA89A or RA832A?
Yes, the RA889A1001 is designed to replace various legacy Honeywell models; however, always verify total current requirements as this model is limited to a 2000 VA maximum connected load.
Is this relay compatible with 3-wire thermostats?
This unit is compatible with most Honeywell electromechanical and electronic 2- or 3-wire thermostats. For mechanical versions, ensure the thermostat heat anticipator is set to 0.12A.
What type of wiring is required for line voltage connections?
Use only NEC Class 1 wire rated for at least 167°F (75°C) to satisfy safety codes and maintain terminal integrity.
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.
Resideo RA889A1001 Switching Relay
The Resideo RA889A1001 Switching Relay is a heavy-duty solution for intermediate switching of line and low-voltage devices in hydronic heating systems. Engineered for 120Vac primary voltage, this relay features a Single Pole Double Throw (SPDT) configuration paired with a PowerPile rated low-voltage SPST relay, making it ideal for converting millivolt systems to modern 24V control. The integrated transformer secondary rating of 24Vac provides 9 VA for external loads, protected by a field-replaceable 1A automotive fuse. A built-in push-to-test button and troubleshooting LED allow technicians to verify operation instantly without external meters. Designed for high load switching capability, the contacts are rated for 15 Amp Full Load Amp (AFL) and 30 Amp Locked Rotor (ALR) at 120Vac. The rugged zinc-plated steel enclosure includes multiple knockouts for flexible conduit entry and service access.
Key Benefits
- Universal Modernization: Simplifies the upgrade of 750 mV PowerPile systems to programmable or WiFi thermostats.
- Internal Protection: Features a replaceable 1A automotive fuse to protect the transformer secondary from wiring shorts.
- Diagnostics: Troubleshooting LED and push-to-test functionality reduce diagnostic time on service calls.
- Environmental Resilience: Rated for ambient temperatures from -20°F to 120°F and 90% non-condensing humidity.
- Secure Wiring: Utilizes No. 8 captivated wire clamp screw terminals for reliable copper-to-copper connections.
Common Questions
Can I use this relay to replace an old Honeywell RA89A or RA832A?
Yes, the RA889A1001 is designed to replace various legacy Honeywell models; however, always verify total current requirements as this model is limited to a 2000 VA maximum connected load.
Is this relay compatible with 3-wire thermostats?
This unit is compatible with most Honeywell electromechanical and electronic 2- or 3-wire thermostats. For mechanical versions, ensure the thermostat heat anticipator is set to 0.12A.
What type of wiring is required for line voltage connections?
Use only NEC Class 1 wire rated for at least 167°F (75°C) to satisfy safety codes and maintain terminal integrity.
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 RA889A1001 Switching Relay is a heavy-duty solution for intermediate switching of line and low-voltage devices in hydronic heating systems. Engineered for 120Vac primary voltage, this relay features a Single Pole Double Throw (SPDT) configuration paired with a PowerPile rated low-voltage SPST relay, making it ideal for converting millivolt systems to modern 24V control. The integrated transformer secondary rating of 24Vac provides 9 VA for external loads, protected by a field-replaceable 1A automotive fuse. A built-in push-to-test button and troubleshooting LED allow technicians to verify operation instantly without external meters. Designed for high load switching capability, the contacts are rated for 15 Amp Full Load Amp (AFL) and 30 Amp Locked Rotor (ALR) at 120Vac. The rugged zinc-plated steel enclosure includes multiple knockouts for flexible conduit entry and service access.
Key Benefits
- Universal Modernization: Simplifies the upgrade of 750 mV PowerPile systems to programmable or WiFi thermostats.
- Internal Protection: Features a replaceable 1A automotive fuse to protect the transformer secondary from wiring shorts.
- Diagnostics: Troubleshooting LED and push-to-test functionality reduce diagnostic time on service calls.
- Environmental Resilience: Rated for ambient temperatures from -20°F to 120°F and 90% non-condensing humidity.
- Secure Wiring: Utilizes No. 8 captivated wire clamp screw terminals for reliable copper-to-copper connections.
Common Questions
Can I use this relay to replace an old Honeywell RA89A or RA832A?
Yes, the RA889A1001 is designed to replace various legacy Honeywell models; however, always verify total current requirements as this model is limited to a 2000 VA maximum connected load.
Is this relay compatible with 3-wire thermostats?
This unit is compatible with most Honeywell electromechanical and electronic 2- or 3-wire thermostats. For mechanical versions, ensure the thermostat heat anticipator is set to 0.12A.
What type of wiring is required for line voltage connections?
Use only NEC Class 1 wire rated for at least 167°F (75°C) to satisfy safety codes and maintain terminal integrity.
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.
