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Honeywell R845A1030 DPST Switching Relay with Internal Transformer for HVAC Zone Control Systems
- Regular price
- $169.00
- Sale price
- $169.00
- Regular price
-
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Product Description P/N: R845A1030
Description
The Honeywell R845A1030 Switching Relay is a DPST line voltage relay designed for hot water zone control systems and low-voltage operated switching applications. Featuring an internal 24 VAC transformer and dual-pole switching capability, this relay provides dependable control for HVAC zoning, pumps, valves, and auxiliary line voltage loads. The Honeywell R845A1030 is engineered for reliable operation in residential and commercial heating control systems.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | HVAC Controls |
| Part Number | R845A1030 |
| Subcategory | Switching Relays |
| Relay Type | DPST Line Voltage Relay |
| Switching Action | DPST |
| Coil Voltage | 24 VAC |
| Primary Voltage | 120 VAC, 50/60 Hz |
| Secondary Voltage | 24 VAC |
| Maximum Input Power | 5.0 W |
| Thermostat Compatibility | Low Voltage (Class 2) Two-Wire |
| Main Contact Rating at 120 VAC | 7.4A AFL, 44.4A ALR, 10A Resistive |
| Main Contact Rating at 240 VAC | 3.7A AFL, 22.2A ALR, 6A Resistive |
| Secondary Contact Rating at 120 VAC | 3A AFL, 18A ALR |
| Secondary Contact Rating at 240 VAC | 2A AFL, 12A ALR |
| Maximum Connected Load | 2000 VA |
| Number of Zones | 2 |
| Electrical Connections | 2-Wire Control Circuit |
| Operating Temperature | 105°F to 115°F Maximum Ambient |
| Enclosure Type | Integral Enclosure |
| Certifications | UL Listed, CSA Certified |
| Dimensions | 5-1/4 in H x 4-1/4 in W x 2-5/16 in D |
| Weight | Approximately 2 lb |
Information About R845A1030
The R845A1030 is a TRADELINE series switching relay manufactured by Honeywell for hydronic heating and zoning applications. It combines a built-in transformer with DPST relay switching, allowing low-voltage thermostats or controllers to operate line-voltage equipment efficiently and safely. The relay is compatible with low-voltage Class 2 two-wire thermostats and supports independent switching of multiple connected loads in heating systems. Housed in an integrated enclosure, the unit is UL listed and CSA certified for dependable performance in HVAC control installations.
Key Features:
- DPST Switching Relay: Provides double-pole single-throw switching for line voltage heating control systems.
- Integral Transformer: Includes a built-in 24 VAC transformer for low-voltage thermostat operation.
- HVAC Zone Control Compatibility: Designed for hot water zone control systems and hydronic heating applications.
- Low-Voltage Thermostat Support: Compatible with Class 2 two-wire low-voltage thermostats.
- Dual Load Switching: Supports SPST control of two separate loads when required.
- Heavy-Duty Contact Ratings: Rated for high inrush and resistive loads in HVAC equipment applications.
- Integrated Protective Enclosure: Factory-enclosed design improves installation safety and reliability.
- 120 VAC Operation: Operates on standard 120 VAC, 50/60 Hz electrical systems.
- UL and CSA Approved: Certified for use in residential and commercial HVAC systems.
- Compact Installation Footprint: Compact housing allows easy mounting in control panels or mechanical rooms.
- Wide Load Compatibility: Suitable for pumps, valves, circulators, and other HVAC line-voltage devices.
- Reliable Relay Performance: Designed for continuous-duty operation in demanding heating control environments.
The R845A1030 delivers the reliability and precision required for HVAC zoning, hydronic heating control, and line-voltage relay switching applications.
Description
The Honeywell R845A1030 Switching Relay is a DPST line voltage relay designed for hot water zone control systems and low-voltage operated switching applications. Featuring an internal 24 VAC transformer and dual-pole switching capability, this relay provides dependable control for HVAC zoning, pumps, valves, and auxiliary line voltage loads. The Honeywell R845A1030 is engineered for reliable operation in residential and commercial heating control systems.
Technical Specifications
| Condition | New/Never Used Surplus |
| Brand | Honeywell |
| Category | HVAC Controls |
| Part Number | R845A1030 |
| Subcategory | Switching Relays |
| Relay Type | DPST Line Voltage Relay |
| Switching Action | DPST |
| Coil Voltage | 24 VAC |
| Primary Voltage | 120 VAC, 50/60 Hz |
| Secondary Voltage | 24 VAC |
| Maximum Input Power | 5.0 W |
| Thermostat Compatibility | Low Voltage (Class 2) Two-Wire |
| Main Contact Rating at 120 VAC | 7.4A AFL, 44.4A ALR, 10A Resistive |
| Main Contact Rating at 240 VAC | 3.7A AFL, 22.2A ALR, 6A Resistive |
| Secondary Contact Rating at 120 VAC | 3A AFL, 18A ALR |
| Secondary Contact Rating at 240 VAC | 2A AFL, 12A ALR |
| Maximum Connected Load | 2000 VA |
| Number of Zones | 2 |
| Electrical Connections | 2-Wire Control Circuit |
| Operating Temperature | 105°F to 115°F Maximum Ambient |
| Enclosure Type | Integral Enclosure |
| Certifications | UL Listed, CSA Certified |
| Dimensions | 5-1/4 in H x 4-1/4 in W x 2-5/16 in D |
| Weight | Approximately 2 lb |
Information About R845A1030
The R845A1030 is a TRADELINE series switching relay manufactured by Honeywell for hydronic heating and zoning applications. It combines a built-in transformer with DPST relay switching, allowing low-voltage thermostats or controllers to operate line-voltage equipment efficiently and safely. The relay is compatible with low-voltage Class 2 two-wire thermostats and supports independent switching of multiple connected loads in heating systems. Housed in an integrated enclosure, the unit is UL listed and CSA certified for dependable performance in HVAC control installations.
Key Features:
- DPST Switching Relay: Provides double-pole single-throw switching for line voltage heating control systems.
- Integral Transformer: Includes a built-in 24 VAC transformer for low-voltage thermostat operation.
- HVAC Zone Control Compatibility: Designed for hot water zone control systems and hydronic heating applications.
- Low-Voltage Thermostat Support: Compatible with Class 2 two-wire low-voltage thermostats.
- Dual Load Switching: Supports SPST control of two separate loads when required.
- Heavy-Duty Contact Ratings: Rated for high inrush and resistive loads in HVAC equipment applications.
- Integrated Protective Enclosure: Factory-enclosed design improves installation safety and reliability.
- 120 VAC Operation: Operates on standard 120 VAC, 50/60 Hz electrical systems.
- UL and CSA Approved: Certified for use in residential and commercial HVAC systems.
- Compact Installation Footprint: Compact housing allows easy mounting in control panels or mechanical rooms.
- Wide Load Compatibility: Suitable for pumps, valves, circulators, and other HVAC line-voltage devices.
- Reliable Relay Performance: Designed for continuous-duty operation in demanding heating control environments.
The R845A1030 delivers the reliability and precision required for HVAC zoning, hydronic heating control, and line-voltage relay switching applications.