3
63-2051—4
T451A, T651A, T694A,B,D,F
SPECIFICATIONS
ELECTRICAL RATINGS (A):
Voltage (Vac)
120
208/240/277
Full Load
8
4
a
Locked Rotor
48
24
a
Wider temperature differential ranges can occur when
used in cooling applications with current draws that are
more than four amps. If a wider differential range is
unacceptable, use a T6051 Heavy Duty Line Voltage
Thermostat for a smaller differential range.
Pilot Duty: 125 VA.
7.2A Resistive: heating contacts only.
TEMPERATURE SETTING RANGE: 35
°
F to 95
°
F [2
°
C
to 35
°
C] (with range stops removed).
STORAGE TEMPERATURE: -40
°
F to 150
°
F [-40
°
C to
66
°
C].
FIXED DIFFERENTIAL: 2
°
F [1
°
C].
SWITCHING ACTION:
T451: Spst. Contacts make on temperature fall.
T651: Spdt. Heating contacts break and cooling contacts
make on temperature rise.
T694: Spdt. Heating contacts break and cooling contacts
make on temperature rise.
FIELD WIRING CONNECTIONS: No. 10 screw terminals
on T451A/T651A; color-coded leads on T694 models.
DIMENSIONS: See Figs. 1 and 2.
FINISH: Brushed champagne gold and dark pewter face-
plate; beige and brown case.
UNDERWRITERS LABORATORIES INC.: Listed.
ACCESSORIES:
Q473A2006 Switching Subbase: Use with T651A for
HEAT-OFF-COOL manual system switching.
Q473B2005 Switching Subbase: Use with T451A/
T652A for AUTO/OFF switching in heating only or
cooling only applications.
220124A Faceplate vertical, Fahrenheit scale, with
thermometer.
a
220124B Faceplate vertical, Celsius scale, with ther-
mometer.
220124C Faceplate, horizontal, Fahrenheit scale, with
thermometer.
a
220124D Faceplate, horizontal, Celsius scale, with ther-
mometer.
220125A Faceplate, horizontal, Fahrenheit scale, with-
out thermometer.
220125B Faceplate, vertical, Fahrenheit scale, without
thermometer.
220125C Faceplate, horizontal, Celsius scale, without
thermometer.
220125D Faceplate, vertical, Celsius scale, without ther-
mometer.
220126A Faceplate, horizontal, blank (concealed setpoint,
without thermometer).
a
220126B Faceplate, vertical, blank (concealed setpoint,
without thermometer).
a
220213 Wallplate, covers old T451A/T651A wall marks
when installing new T451A/T651A.
a
199242 Wallplate, covers old T694 wall marks when
installing new T694.
a
Supplied with SUPER TRADELINE model T651A.
Fig. 1—T451A, T651A mounting dimensions in in. [mm].
417
32
[114]
2 13
16
[70]
40
50
60
70
80
90
40 50 60 70 80 90
COOL HEAT COM
1 1
8
[22]
113
16
[48]
3
9
32
[83]
1
3
4
[45]
15
16
[24]
17
32
[14]
1
1
8
[37]
1
15
32
[35]
9
16
[14]
F
M6130
