Brochure

63-8702 45
RA889A Switching Relay
Dimensions in inches (millimeters)
7/32 (6)
DIAMETER
MOUNTING
HOLE
KNOCKOUT
FOR 1/2 (13)
CONDUIT (3)
1-1/16
(27)
1-1/4 (32)
2-3/16
(56)
3-1/2
(89)
3-11/16 (94) 5/16
(8)
5/16 (8)
6-1/4
(159)
5-3/8
(137)
1-3/8 (35)
4-7/16 (118)
2-1/8
(54)
3/16 (5) DIAMETER
3/8 (10) DIAMETER
7/8(22)
DIAMETER
KEYHOLE
TYPE
MOUNTING
HOLE
M17512
The RA889A Switching Relay with 24 V controller provides
intermediate switching of line- and low-voltage devices from a line-
or low-voltage controller and is typically applied in Hydronic heating
systems.
• High load switching capability.
• Troubleshooting LED.
• Push-to-test button.
• Replaceable transformer fuse.
• 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 Honeywell models, now manufactured by
Resideo.
• Secondary of transformer protected by replaceable 1A automotive
fuse.
Application: Provide intermediate SPDT and SPST switching of line-
and low-voltage devices from a line- or low-voltage controller.
Electrical Ratings, Contacts: Maximum connected load is 2000 VA
Contact Ratings (AFL): 15A@ 120 Vac
Contact Ratings (ALR): 120 Vac – 30A
Transformer: Secondary Rating- 24 Vac, 12 VA max., 9 VA available for
external load. Secondary protected by replaceable 1A automotive
fuse.
Operating Humidity Range (% RH): 0 to 90% RH, non-condensing
Temperature Ratings: Ambient: -20°F to +120°F (Ambient: -29°C to
+49°C)
Approximate, Dimensions: 6 1/4 in. high x 4 7/16 in. wide x 3 1/2 in.
deep (159 mm high x 118 mm wide x 89 mm deep)
Approvals, Underwriters Laboratories Inc.: Listed: File No. E4436,
Guide No. XAPX
Approvals, Canadian Underwriters Laboratories Inc.: Listed: Guide No.
XAPX7.
Comments: Thermostat Compatibility – Honeywell (now
manufactured by Resideo) electromechanical and electronic 2- or
3-wire; Thermostat Heat Anticipator Setting – 0.12A
Material Number Input Voltage Frequency Switching Description Includes
RA889A1001/U 120V 60 Hz SPDT, plus PowerPile
®
rated low
voltage SPST relay
This Enclosed 120V, 60 Hz switching relay with internal
transformer, Provides intermediate SPDT and SPST
switching of line- and low-voltage devices from a line- or
low-voltage controller.
Integral
transformer,
enclosure
Hydronic Switching Relays