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THERMOSTATS & CONTROLLERS
NEMA 4X RATED THERMOSTATS
T631F/G, TW155/255 SERIES
DESCRIPTION
The T631F/G Series and the TW155/255 Series thermostats
have NEMA 4X enclosure ratings and provide line voltage
control of heating, cooling and ventilation systems in areas
that are subject to washdown such as barns, poultry and hog
houses, pump buildings and crop storage areas.
TW155
T631F
SPECIFICATIONS
Range
Differential °F
Model Setpoint
°F (°C)
(°C)
40 to 110
TW155
External
FIXED
(4 to 43)
40 to 110
TW255
External
FIXED
(4 to 43)
35 to 100
FIXED 2 (1.1)
T631F1068 Internal
(2 to 38)
35 to 100
FIXED 2 (1.1)
T631F1084 External
(2 to 38)
35 to 100
FIXED 3.5 (1.9)
T631F1092 External
(2 to 38)
35 to 100
FIXED 2 (1.1)
T631G1059 External
(2 to 38) Interstage 0 to 7 (0 to 4)
Ouput
1 SPDT
DPDT
1 SPDT
1 SPDT
1 SPDT
(1 HP)
2 SPDT
(1 HP)
Contact Rating (A)
120
240
277
24 VAC
VAC
VAC
VAC
22 FLA 22 FLA 22 FLA
(3/4 HP) (1.5HP) (1.5HP)
22 FLA 22 FLA 22 FLA
(3/4 HP) (1.5 HP) (1.5HP)
7.4 FLA 3.7 FLA 3 FLA
2 FLA
44 LRA 22 LRA 18 LRA
7.4 FLA 3.7 FLA 3 FLA
2 FLA
44 LRA 22 LRA 18 LRA
16 FLA 8 FLA
96 LRA 48 LRA
16 FLA 8 FLA
96 LRA 48 LRA
Dimensions in (cm)
TW155/255
6.87"H x 3.125"W x 3.375"D
(Not including knob)
(17.4 x 7.9 x 8.6 cm)
T631F/G
5"H x 6.5"W x 3"D
(12.7 x 16.5 x 7.6 cm)
Approvals
TW155/255 ETL Canada/USA
T631F/G
UL listed File No. E4436 Vol. 1 Sec
UL Guide XAPX; CSA Certified File
No. LR1620 Guide No. 400-E-O;
Meets NEC Article 547-4
Maximum Operating Temperature
TW155/255
110°F (43°C)
T631F/G
145°F (63°C)
WIRING
T631F
T631G
Fan Switch
THERMOSTATS & CONTROLLERS
2
21
R
B
W
L1
(HOT)
Power
Supply
Power
Supply
L2
1
Heating
System
1
Provide Disconnect Means And Overload
Protection As Required.
2
Switch Makes R To B On Temperature Fall.
1
W
R
B
W
Cooling or
Ventilating
Load
Speed Change
Switch
Heating
Equipment
L2
1
Provide Disconnect Means And Overload
Protection As Required.
T631G Hookup For Heating And Cooling
(Or Ventilating) Control.
TW255
Heating
TW255
Cooling
L2
L1
Black
Black
TW155
Cooling
L2
Black
L1
Black
L1
Black
L2
L2
Blue
Red
B
L1
(HOT)
T631F Hookup For Heating Control
TW155
Heating
L1
Black
R
Add
Jumper
Wire
Blue
Red
Red
Load
Load
Switch makes black to
red on temperature fall.
Switch makes black to
red on temperature fall.
Red
Red
Blue
Blue
Blue
Load
Load
Switch makes black to
blue on temperature rise.
Switch makes black to
blue on temperature rise.
ORDERING INFORMATION
MODEL
TW155
TW255
T631F1068
T631F1084
T631F1092
T631G1059
1388
888-397-5353 USA
DESCRIPTION
SPDT, NEMA 4x Thermostat, external setpoint, 120 to 277 VAC rating
DPDT, NEMA 4x Thermostat, external setpoint, 120 to 277 VAC rating
SPDT, NEMA 4x Thermostat, internal setpoint, 24 to 240 VAC rating
SPDT, NEMA 4x Thermostat, external setpoint, 24 to 240 VAC rating
SPDT, NEMA 4x Thermostat, external setpoint, 120 to 240 VAC rating
SPDT (2), NEMA 4x Thermostat, external setpoint, 120 to 240 VAC rating
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March 2014