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The TH Series of thermostats provides affordable, mechanical on/off switching in response to the temperature sensed at the pipe.

• Freeze protection and temperature maintenance for piped liquids
• Affordable, automatic on/off switching for heating cable
• TH4X325, TH4X325-2 and TH4X600 are suitable for use in ordinary and corrosive lLocations
• TH7325, TH7325-2 and TH7600 are suitable for use in hazardous locations

















TH4X325 Thermostat Specification Sheet
TH4X325-2 Thermostat Specification Sheet
TH7325 Thermostat Specification Sheet
TH7325-2 Thermostat Specification Sheet
TH7600 Thermostat Specification Sheet
Thermostat Selection Guide
Thermostat Options List
Item IDDescriptionQuantity
TH4X325
Corrosive pipe sensing applications forfreeze protection and process maintenance piping.
Internal adjustment
NEMA 4X, IP66 epoxy coated metal enclosure
Ambient compensated
Maximum Bulb Temp: 420° F (215° C)
Switch: 22A/480V SPDT
Capillary Material Length: Stainless Steel 10FT
TH4X325-2
Corrosive pipe sensing applications forfreeze protection and process maintenance piping. Designed to break both legs of a phase-to-phase heating circuit. Relay coil is powered by heater supply voltage.
Internal adjustment
NEMA 4X, IP66 epoxy coated metal enclosure
Ambient compensated
Maximum B
TH7325
Freeze protection & process maintenancepipe temperature sensing applications.
External adjustment
NEMA 4,7,9 cast aluminum enclosure
Ambient compensated
Threaded flange construction
Maximum Bulb Temp: 420°F (215°C)
Switch: 22A/480V SPDT Terminals
Capillary Material Length: Stainless Steel 10FT
TH7325-2
Freeze protection & process maintenancepipe temperature sensing applications. Designed to break both legs of a phase-to-phase heating circuit. Relay coil is powered by heater supply voltage.
External adjustment
NEMA 4,7,9 cast aluminum enclosure
Ambient compensated
Threaded flange construction
TH7600
Freeze protection & process maintenancepipe temperature sensing applications.
External adjustment
NEMA 4,7,9 cast aluminum enclosure
Ambient compensated
Threaded flange construction
Maximum Bulb Temp: 650°F (340°C)
Switch: 22A/480V SPDT
Capillary Material Length: Stainless Steel 10FT
TH4X600
Use for high temperature piping on freeze protection and process maintenance applications.
Internal adjustment
NEMA 4X, IP66 corrosion resistant, watertight, non-metallic enclosure
Ambient compensated
Maximum Bulb Temp: 1100°F (593°C)
Switch: 8A/240V SPST Terminals
Capillary Material Length: Al