Product Info
Literature

Overview

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.

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 models:R182A,B,C,J; R482A,B,C,J; R845; R882A,B,C,J and RA832.

Product Specifications

Application: Enclosed Universal switching relay with internal transformer for 24 volt 2 or 3 wire thermostat control of line voltage devices. Two line voltage SPST relays and one low voltage SPST relay with PowerPile® rating.
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
Includes: Integral transformer, enclosure
Comments: Thermostat Compatibility-- Honeywell electromechanical and electronic 2- or 3-wire; Thermostat Heat Anticipator Setting-- 0.12A
Item Type: Product
Frequency: 60 Hz
Approvals, Underwriters Laboratories Inc.: Listed: File No. E4436, Guide No. XAPX
Electrical Connections: Control Circuit- 2 or 3-wire
Operating Humidity Range (% RH): 0 to 90% RH, non-condensing
Temperature Ratings (C): Ambient: -29 C to +49 C
Temperature Ratings (F): Ambient: -20 F to +120 F
Approvals, Canadian Underwriters Laboratories Inc.: Listed: Guide No. XAPX7.
Switching: Two SPST, plus PowerPile® rated low voltage SPST relay. (If normally closed contacts are needed, use RA889A).
Contact Ratings (AFL): 7.4A AFL, 44.4A @ 120 Vac on each set of line-voltage contacts
Input Voltage: 120V
Coil Ratings Voltage: 24 Vac
Coil Ratings Current: 0.4A
Electrical Ratings, Contacts: Maximum connected load is 2000 VA
Transformer: Secondary Rating-24 Vac, 12 VA max., 9 VA available for external load. Secondary protected by replaceable 1A automotive fuse.