Univ.Switching Relay W. Int. Transformer - 55610

HVAC/R & Hydronics
55610 MFG #: R8845U1003/U
0.00000 /

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
  • Specifications
    • One model may replace many Honeywell models:R182A,B,C,J; R482A,B,C,J; R845; R882A,B,C,J and RA832.
    • One model replaces many competitor models.
    • Relay for use with external 24 Vac or 24 Vdc supply, with line-voltage control, or with internal 24 V transformer supply.
    • Long-life DC relay drive control technology.
    • Low-voltage contact rating for PowerPile® applications.
    • Replaceable transformer fuse.
    • Push-to-test button.
    • Two troubleshooting LED.
    • Replaceable socketed relays.
  • Transformer: Secondary Rating-24 Vac, 12 VA max., 9 VA available for external load. Secondary protected by replaceable 1A automotive fuse.
  • Electrical Ratings, Contacts: Maximum connected load is 2000 VA
  • Coil Ratings Current: 0.4A
  • Coil Ratings Voltage: 24 Vac
  • Input Voltage: 120V
  • Contact Ratings (AFL): 7.4A AFL, 44.4A @ 120 Vac on each set of line-voltage contacts
  • Switching: Two SPST, plus PowerPile® rated low voltage SPST relay. (If normally closed contacts are needed, use RA889A).
  • Approvals, Canadian Underwriters Laboratories Inc.: Listed: Guide No. XAPX7.
  • Temperature Ratings (F): Ambient: -20 F to +120 F
  • Temperature Ratings (C): Ambient: -29 C to +49 C
  • Operating Humidity Range (% RH): 0 to 90% RH, non-condensing
  • Electrical Connections: Control Circuit- 2 or 3-wire
  • Approvals, Underwriters Laboratories Inc.: Listed: File No. E4436, Guide No. XAPX
  • Frequency: 60 Hz
  • Item Type: Product
  • Comments: Thermostat Compatibility-- Honeywell electromechanical and electronic 2- or 3-wire; Thermostat Heat Anticipator Setting-- 0.12A
  • Includes: Integral transformer, enclosure
  • Dimensions (mm): 159 mm high x 118 mm wide x 89 mm deep
  • Dimensions (in.): 6 1/4 in. high x 4 7/16 in. wide x 3 1/2 in. deep
  • 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.