Line-Voltage Thermostats


Regulate line-voltage HVAC systems.
Thermostats for heaters mount to a surface-mount outlet box.
Overall | ||||||||||
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Voltage | Current, A | Temp. Setting, °F | Switch Type | Ht. | Wd. | Dp. | Mounting Fasteners Included | Specifications Met | Each | |
For Air Conditioners and Heaters | ||||||||||
24V AC-277V AC | 22 | 40° to 90° | SPDT | 4 3/4" | 3" | 1 3/8" | Yes | UL Listed | 0000000 | 0000000 |
For Heaters | ||||||||||
120V AC-277V AC | 22 | 50° to 90° | SPST | 4 1/2" | 2 3/4" | 1 1/2" | No | ETL Listed | 00000000 | 00000 |
120V AC-277V AC | 22 | 50° to 90° | DPST | 4 1/2" | 2 3/4" | 1 1/2" | No | ETL Listed | 00000000 | 00000 |
Programmable Line-Voltage Thermostats

Set these thermostats to adjust the temperature at certain times each day. They regulate heaters that use direct electrical power, such as baseboard and wall heaters.
For technical drawings and 3-D models, click on a part number.
For System | Overall | |||||||||||
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Type | Efficiency | Program Function | Voltage | Current, A | Temp. Setting, °F | Switch Type | Ht. | Wd. | Dp. | Mounting Fasteners Included | Each | |
For Heaters | ||||||||||||
Push Button Control | ||||||||||||
Electric | Single Stage | Daily | 120V AC | 16 | 40° to 86° | SPST | 4 7/8" | 2 3/4" | 7/8" | Yes | 0000000 | 0000000 |
Electric | Single Stage | Daily | 240V AC | 15 | 40° to 86° | DPST | 4 7/8" | 2 3/4" | 7/8" | Yes | 0000000 | 000000 |
Electric | Single Stage | Daily | 240V AC | 16 | 40° to 86° | SPST | 4 7/8" | 2 3/4" | 7/8" | Yes | 0000000 | 000000 |
Plug-In Line-Voltage Thermostats

Plug in the thermostat, then plug your line-voltage heater into the socket on the thermostat's plug. Use the included metal hanger for mounting.
Overall | |||||||||||
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Voltage | Current, A | Temp. Setting, °F | Switch Type | Cord Lg., ft. | Plug Type | Ht. | Wd. | Dp. | Specifications Met | Each | |
For Heaters | |||||||||||
120V AC | 13 | 40° to 90° | SPST | 6 | Three Prong | 5 1/2" | 2 1/8" | 2 5/8" | UL Listed | 000000 | 0000000 |
Tamper-Resistant Line-Voltage Thermostats


A built-in guard prevents accidental changes and other tampering and protects these thermostats from damage. These thermostats regulate the temperature in HVAC systems that use direct electrical power. They’re often used with baseboard and wall heaters.
DPST (double pole, single throw) thermostats control two circuits, so they have an “off” setting that cuts power to the thermostat. As a result, they’re more energy efficient and slightly safer than SPST (single pole, single throw) thermostats, which stay at a low setting instead of turning off completely.
For technical drawings and 3-D models, click on a part number.
Overall | |||||||||||
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Voltage | Current, A | Temp. Setting, °F | Switch Type | Ht. | Wd. | Dp. | Mounting Fasteners Included | Features | Specifications Met | Each | |
For Heaters | |||||||||||
120V AC-277V AC | 22 | 50° to 90° | SPST | 4 9/16" | 2 13/16" | 1 3/4" | No | Tamper-Resistant Guard | ETL Listed | 0000000 | 000000 |
120V AC-277V AC | 22 | 50° to 90° | DPST | 4 9/16" | 2 13/16" | 1 3/4" | No | Tamper-Resistant Guard | ETL Listed | 0000000 | 00000 |
Multi-Speed Line-Voltage Thermostats

Control one- and two-speed line-voltage HVAC systems. Set the thermostat to activate the device’s second speed when the temperature surpasses the setting for the first speed by 3.6° F to 9° F.
Overall | |||||||||||||
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Voltage | Current, A | Temp. Setting, °F | Switch Type | Ht. | Wd. | Dp. | Temp. Differential, °F | For Use Outdoors | Mounting Fasteners Included | Environmental Rating | Specifications Met | Each | |
For Air Conditioners and Heaters | |||||||||||||
24V AC-250V AC | 15 | 32° to 140° | SPDT | 6" | 2 3/4" | 3 3/8" | 3.6° to 9° | Yes | Yes | IP65; NEMA 4 | CE Marked | 0000000 | 0000000 |
Line-Voltage Thermostats with Thermowell

Commonly used with line-voltage hydronic heaters, this thermostat senses the temperature of liquids. The thermowell protects the sensor.
Overall | Thermowell | ||||||||||
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Voltage | Current, A | Temp. Setting, °F | Switch Type | Ht. | Wd. | Dp. | Thread Type | Pipe Size | Specifications Met | Each | |
For Air Conditioners and Heaters | |||||||||||
120V AC-240V AC | 10 | 100° to 240° | SPDT | 4 1/2" | 2 1/4" | 1 7/8" | NPT | 1/2 | UL Listed | 000000 | 0000000 |
Remote-Sensor Line-Voltage Thermostats


Place sensor in enclosures or different rooms than the rest of the thermostat to control temperature from outside the space. Thermostats work with line-voltage HVAC systems.
Overall | |||||||||||||
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Voltage | Current, A | Temp. Setting, °F | Switch Type | Ht. | Wd. | Dp. | Sensor Cord Lg., ft. | Mounting Fasteners Included | Mounting Hole Dia. | Specifications Met | Each | ||
For Air Conditioners and Heaters | |||||||||||||
A | 120V AC-277V AC | 22 | -30° to 100° | SPDT | 5" | 2 1/4" | 1 5/8" | 8 | No | 1/8" | UL Listed | 0000000 | 0000000 |
B | 120V AC-277V AC | 22 | 40° to 110° | SPDT | 5 1/2" | 2 1/8" | 2 5/8" | 2 | No | 1/8" | UL Listed | 0000000 | 000000 |
DIN-Rail Mount Remote-Sensor Line-Voltage Thermostats


Place sensor in enclosures or different rooms than the rest of the thermostat to control temperature from outside the space. Thermostat works with line-voltage HVAC systems.
Remote-Sensor Line-Voltage Thermostats with Thermowell

Commonly used with line-voltage hydronic heaters, this thermostat senses the temperature of liquids at a distance using the remote sensor. The thermowell protects the sensor.
Overall | Thermowell | |||||||||||||
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Voltage | Current, A | Temp. Setting, °F | Switch Type | Ht. | Wd. | Dp. | Sensor Cord Lg., ft. | Thread Type | Pipe Size | Mounting Fasteners Included | Mounting Hole Dia. | Specifications Met | Each | |
For Air Conditioners and Heaters | ||||||||||||||
120V AC-240V AC | 10 | 100° to 240° | SPDT | 4 1/2" | 2 1/4" | 1 7/8" | 8 | NPT | 1/2 | No | 1/4" | UL Listed | 000000 | 0000000 |
Washdown Line-Voltage Thermostats


Regulate temperatures in washdown areas for HVAC systems that use direct electrical power, such as air conditioners and heaters. Rated NEMA 4X, these thermostats protect against dirt, washdowns, and corrosion.
Thermostats with a plug are easy to connect. Plug in the thermostat and then plug your heater into the thermostat.
Overall | ||||||||||||||||
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Voltage | Current, A | Temp. Setting, °F | Switch Type | Electrical Connection Type | Cord Lg., ft. | Plug Type | Ht. | Wd. | Dp. | For Use Outdoors | Mounting Fasteners Included | Mounting Hole Dia. | Specifications Met | Environmental Rating | Each | |
For Air Conditioners and Heaters | ||||||||||||||||
120V AC-277V AC | 22 | 40° to 100° | SPDT | Hardwire | __ | __ | 6 7/8" | 3 1/8" | 4" | Yes | No | 5/32" | ETL Listed | NEMA 4X | 0000000 | 0000000 |
120V AC-277V AC | 22 | 40° to 100° | DPDT | Hardwire | __ | __ | 6 7/8" | 3 1/8" | 4" | Yes | No | 5/32" | ETL Listed | NEMA 4X | 0000000 | 000000 |
For Heaters | ||||||||||||||||
125V AC | 13 | 40° to 110° | SPST | Plug | 6 | Three Prong | 7 5/16" | 3 1/4" | 4 3/16" | Yes | No | 1/4" | ETL Listed | NEMA 4X | 0000000 | 000000 |
Hazardous Location Line-Voltage Thermostats

Use to regulate line-voltage HVAC systems where flammable gases, vapors, and dust are present. Thermostats are rated Class I, Divisions 1 and 2, Groups C and D; and Class II, Divisions 1 and 2, Groups E, F, and G.
Overall | ||||||||||||
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Voltage | Current, A | Temp. Setting, °F | Switch Type | Ht. | Wd. | Dp. | Mounting Fasteners Included | Mounting Hole Dia. | Specifications Met | Environmental Rating | Each | |
For Air Conditioners and Heaters | ||||||||||||
24V AC-277V AC | 22 | 50° to 90° | SPDT | 5 3/4" | 6 3/8" | 5 5/8" | No | 1/4" | UL Listed, CSA Certified | NEC Class I Divisions 1, 2 Groups C, D NEC Class II Divisions 1, 2 Groups E, F, G NEMA 7 | 0000000 | 0000000 |
24V AC-277V AC | 22 | 50° to 90° | DPDT | 5 3/4" | 6 3/8" | 5 5/8" | No | 1/4" | UL Listed, CSA Certified | NEC Class I Divisions 1, 2 Groups C, D NEC Class II Divisions 1, 2 Groups E, F, G NEMA 7 | 0000000 | 000000 |
Remote-Sensor Hazardous Location Line-Voltage Thermostats

Place sensor in enclosures or different rooms than the rest of the thermostat to control temperature from outside the space. Use to regulate line-voltage HVAC systems where flammable gases, vapors, and dust are present. Thermostats are rated Class I, Divisions 1 and 2, Group D; and Class II, Divisions 1 and 2, Groups E, F, and G.
Overall | |||||||||||||
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Voltage | Current, A | Temp. Setting, °F | Switch Type | Ht. | Wd. | Dp. | Sensor Cord Lg., ft. | Mounting Fasteners Included | Mounting Hole Dia. | Specifications Met | Environmental Rating | Each | |
For Air Conditioners and Heaters | |||||||||||||
120V AC-277V AC | 22 | 20° to 80° | SPDT | 5 7/8" | 3" | 3 1/4" | 6 | No | 3/8" | UL Listed, CSA Certified | NEC Class I Divisions 1, 2 Group D NEC Class II Divisions 1, 2 Groups E, F, G NEMA 7 NEMA 9 | 0000000 | 0000000 |