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32
THERMOSTATS
1A10-651 LIGHT DUTY AND 1A16-51 HEAVY DUTY
LINE VOLTAGE THERMOSTATS
For Direct Control of Fan Coils, Fans, Motor Starters, Circulator Mo-
tors, Contactors, Valves for Heating, Cooling & SPDT Applications
FEATURES
• Two dial stops for setting a maximum or minimum temperature. Mimimum between
66 to 87°F. Maximum between 60 to 81°F.
• Thermostat mounts on 2” x 4” electrical box.
• Includes set point locking feature at 66°, 69°, 72°, 75°, 78° or 81°F
• Vertical or horizontal mounting.
• Optional heating and cooling subbase S29-21 available.
• Beige color.
• Does not contain mercury.
A.C. Electrical Ratings
Heat Cool
Model Switch Full Locked Resistive Full Locked Pilot
Number Range Differential Action Voltage Load Rotor (Non-inductive) Load Rotor Duty
1A10-651 36 to 90°F 1.5°F SPDT 120 8.0A 48.0A 8.0A 8.0A 48.0A 125 VA
(2 to 32°C) 240/277 4.0A 24.0A 8.0A 4.0A 24.0A 125 VA
1A16-51 36 to 90°F 1.5°F SPDT 120 16.0A 96.0A 16.0A 8.0A 48.0A 125 VA
(2 to 32°C) 240/277 8.0A 48.0A 16.0A 4.0A 24.0A 125 VA
1A10-651
with S29-21 subbase
SPECIFICATIONS
Dimensions without subbase, knob & case . . . 4
1
/
2
”H x 2
7
/
8
” W x 1
3
/
4
”D (Vertical)
Dimensions with subbase, knob & case. . . . . . 5
1
/
8
”H x 2
7
/
8
” W x 2
1
/
8
”D (Vertical)
Agency . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . U.L. listed and C.S.A. certied
PARTS AND ACCESSORIES See end of this section for additional parts and accessories
• F61-2152 – Wallplate (4
5
/
8
” x 6
5
/
8
”) only
• F20-1852 – Vertical and horizontal thermostat dials without thermometer
• F20-2386 – Thermostat and subbase dials for horizontal mounting
• Thermostat guards – see pages 28-29
Model Number System Switching Thermostat Used Thermostat Style
S29-21 Cool – OFF – Heat 1A10-651, 1A16-51 Vertical
S29-22 OFF – Heat 1A10-651, 1A16-51 Vertical
SUBBASES FOR 1A10-651 AND 1A16-51
LINE VOLTAGE
THERMOSTATS