R8845U1003 Honeywell Universal Switching Relay, SPST, R8845U
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The R8845U1003 from Honeywell is a Universal Switching Relay with internal transformer. This switching relay provides intermediate switching of line voltage and low voltage devices from a line voltage or low voltage controller. It is typically applied in Hydronic heating systems.
Honeywell Universal Switching Relays R8845U with 24 V transformer provide intermediate switching of line-and low-voltage devices from a line- or low-voltage controller and is typically applied in Hydronic heating systems.
Features:
- Replaceable socketed relays;
- Two troubleshooting LED;
- Push-to-test button;
- Replaceable transformer fuse;
- Low-voltage contact rating for Powerpile applications;
- Long-life DC relay drive control technology;
- Relay for use with external 24 Vac or 24 Vdc supply, with line-voltage control, or with internal 24 V transformer supply;
- One model replaces many competitor models;
- One model may replace many Honeywell models:R182A,B,C,J; R482A,B,C,J; R845; R882A,B,C,J and RA832;
- Includes integral transformer, enclosure;
- Approvals of Canadian Underwriters Laboratories and Underwriters Laboratories Inc.
Technical Specifications:
- Switching Action: Two SPST, plus PowerPile® rated low voltage SPST relay. (If normally closed contacts are needed, use RA889A);
- Coil Ratings Current: 0.4A;
- Coil Ratings Voltage: 24 Vac;
- Thermostat Heat Anticipator Setting: 0.12A;
- Transformer Primary Rating: 120V, 60 Hz;
- Transformer Secondary Rating: 24V, 12 VA max., 9 VA available for external load. Secondary protected by replaceable 1A automotive fuse;
- Temperature Range: (Ambient) -20 F to +120 F;
- Thermostat Compatibility: Honeywell electromechanical and electronic 2- or 3-wire;
- Dimensions: 6-1/4" high x 4-7/16" wide x 3-1/2" deep;
- Electrical Connections (Control Circuit): 2 or 3-wire;
- Electrical Ratings (Primary Voltage): 120V, 60 Hz;
- Contacts Electrical Ratings (120 Vac AFL): 7.4A AFL, 44.4A ALR on each set of line-voltage contacts. •Maximum connected load is 2000 VA;
- Replacement Parts: 32002190-001 Circulator Replacement Relay;
- Operating Humidity Range (% RH): 0 to 90% RH, non-condensing;
Product Specs | |
Ambient Conditions: | 0-90% RH non-condensing |
Amperage: | 7.4 |
Application | Zoning |
Connection Type | 2-Wire |
Depth (Inches): | 3-1/2" |
Height | 6-1/4" |
Power Method: | 120V |
Relays: | Low Voltage SPST |
Switch Action: | Two SPST |
Type: | Switching Relay |
Voltage | 120v |
Width | 4-7/16" |
Zones | 1 |