Cross Reference

55
Heating/Cooling Devices
Fan Centers
For fan centers (relay and transformer combination), R8285 and R8239 NEMA
rated units offer low-voltage control of line-voltage fan motors and
auxiliary circuits in heating, cooling or air-conditioning systems.
FAN CENTERS
Electrical
Ratings (VA)
Electrical Ratings
(Input Voltage)
Switching
Product
Number
NEMA
Rated
Dimensions (in.)
H x W X D
Main
Connections
Secondary
Connections
Frequency Special Features
40 VA 120 Vac
DPDT
R8239B1043
Ye s
4 1/2 x 4 3/16 x
3 3/32
L L A
Super Tradeline*
DPST
R8239D1007
Available only in
Canada
DPST (1 Power, 1 Pilot)
R8239D1015
Tradeline
SPDT
R8239A1052
Tradeline
50 VA 120/208/240 Vac DPDT
R8239B1076
Super Tradeline
40 VA
120 Vac SPDT
R8285A1048
No
4 3/16 x 4 1/2 x
2 13/16
Tradeline
120/208/240 Vac DPDT
R8285B1053
Tradeline
50 VA 120 Vac DPDT
R8285D5001
Frequency: A — 60 Hz/50 Hz; B — 60 Hz SPST: Single Pole Single Throw
Approvals: UL, CSA DPST: Double Pole Single Throw
Temp Rating: -20˚ F to +105˚ F DPDT: Double Pole Double Throw
Connectors: L — Leadwires SPDT: Single Pole Double Throw
Mounting: Standard 4 x 4 in. junction box
* Super Tradeline models include extra hardware.
DEFROST CONTROLLER
Operation Time On Time Off — Selectable Product Number
Remote Contact Closure 10 min. 50/70/90 min.
ST74A1053
Defrost Controller
Choose the ST74 low-voltage time/temperature defrost controller for heat pumps.
• Resets the defrost cycle by remote contact closure.
• Mounts in outdoor section of heat pump.
• Utilizes special moisture barrier to protect circuitry.
AUXILIARY SWITCHES
Product Number Circuits Configuration
Dimensions (in.)
H x W x D
Contact Ratings
(Resistive)
Maximum (inrush) Current
at 120/240/480/600 V
Use With
DP3AUX-1NO
1 Normally Open snap-on
2 26/32 x 2 17/32 x 7/16 10 A 60/30/15/12 Amps
DP3030 – DP3090
Contactors
DP3AUX-1NC
1 Normally Closed snap-on
DP3AUX-1NO-1NC
2
Normally Closed/Normally Open snap-on
DP3AUX-2NO
Normally Open snap-on
DP3AUX-2NC
Normally Closed snap-on
Auxiliary Switches
Honeywell Auxiliary Switches work Honeywell models of 3-pole contactors.