Universal Switching Relay, SPST
Brand: Honeywell
Part#: R8845U1003
In Stock
Ship Pickup
Estimate delivery
Usually ships: within 1 business day
$87.72 / each
$315.80 box of 4 + Free Shipping
($78.95 each)
Orders over $99 ship free
Honeywell R8845U1003 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
Helpful? Yes No
Verified Purchase
Works wonderfully!
Worked great to convert my old millivolt heaters into heaters that can be used with Nests!
By Michael (from Portland, OR) on 03/16/2020
Top