Universal switching relay with internal transformer, two line voltage SPST relays and one low voltage SPST relay with PowerPile rating.
The R8845U Universal Switching Relay with 24 V transformer provides intermediate switching of line-and low-voltage devices from a line- or low-voltage controller and is typically applied in Hydronic heating systems.
. 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.
Description Universal switching relay with internal transformer, two line voltage SPST relays and one low voltage SPST relay with PowerPile rating.
Application Provides intermediate switching of line and low voltage devices from a line or low voltage controller
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 120 Vac, 60 Hz
Transformer Secondary Rating 24 Vac, 12 VA max., 9 VA available for external load. Secondary protected by replaceable 1A automotive fuse.
Temperature Range (F) (Ambient) -20 F to +120 F
Temperature Range (C) (Ambient) -29 C to +49 C
Thermostat Compatibility Honeywell electromechanical and electronic 2- or 3-wire
Dimensions (in.) 6 1/4 in. high x 4 7/16 in. wide x 3 1/2 in. deep
Dimensions (mm) 159 mm high x 118 mm wide x 89 mm deep
Electrical Ratings -Primary Voltage 120V; 60 Hz
Electrical Connections (Control Circuit) 2 or 3-wire
Operating Humidity Range (% RH) 0 to 90% RH, non-condensing
Approvals, Underwriters Laboratories Inc Listed: File No. E4436, Guide No. XAPX
Includes Integral transformer, enclosure
Electrical Ratings (Primary Voltage) 120V, 60 Hz
Replacement Parts 32002190-001 Replacement Relays. Replacement Fuse: use a 1 A automotive fuse.
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.