Heat Tracing Controllers

  Bulb & Capillary NEMA4

Controllers for Heat Tracing Applications:

For use with HTS/Amptek Heating Jackets with installed Heat Tracing Cable. (see Blankets and Jackets)

General Purpose and Explosion Proof:

HTS/Amptek offers a variety of Temperature Controllers that may be used to regulate heaters in outdoor Ordinary, Division 2 Hazardous or Division 1 Hazardous Locations.


 Bulb $ Capillary NEME4x Bulb & Capillary NEMA4_Gray Bulb & Capillary NEMA7
TB-Series... NEMA 4X for 
Non-Hazardous Location with 
Remote Bulb Sensing...

Range 1: 40F to 140F (4C to 60C)
Range 2: 125F to 575F (52C to 302C)
Voltage: 120V to 250V, 1PH
Switch: DPST (Dual Contacts)
Power Capacity: 22 Amps
Enclosure: NEMA-4x, Fiberglass
Capillary: 4ft, Stainless Steel
Availability: Stock (normally)

Contact HTS/Amptek for Pricing & 
Technical Data
THR-Series... for Non-Hazardous 
Location with Remote Bulb Sensing... 
UL, CSA, FM, CE, NEMA 4x, IP65

Range: 25F to 325F (-4C to 163C)
Voltage: 120V to 480V, 1PH
Switch: SPDT (Single Contact)
Power Capacity: 22 Amps
Enclosure: NEMA-4x, Cast Aluminum 
Capillary: 10ft, Stainless Steel
Availability: Stock (normally)

Contact HTS/Amptek for Pricing & 
Technical Data
TXR-Series... Hazardous Locations, 
Remote Bulb or TXL-Series for Local 
Ambient Sensing... UL, CSA, ATEX

Range: 25F to 325F (-4C to 163C)
Voltage: 120V to 480V, 1PH
Switch: SPDT (Single Contact)
Power Capacity: 22 Amps
Enclosure: NEMA-7
Capillary: 10ft, Stainless Steel
Availability: Stock (normally)

Contact HTS/Amptek for Pricing & 
Technical Data
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