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.

Specifications:
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 PowerPileŽ 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.