STS Thermal SystemsSTS Thermal Systems
STS Thermal Systems

Temperature Regulators

DTS-HAZ Heat Trace Digital Thermostat

  • 30 Amp Solid State Relay (SSR) Output
  • Off Control - 10 degree selectable deadband
  • Soft Start Eliminating SR Cable In-Rush
  • LED Indication for Setpoint, Process Temp, High Temp Alarm, Low Temp Alarm, RTD Failure
  • Programmable High and Low Temp Alarms
  • Programmable Deadband in One Degree Increments
  • Common Alarm Contract for Remote Indication of Alarm Status
  • NEMA 4X Enclosure
  • Integral Pipe Stand
  • Integral 100 Ohm Platinum RTD
  • Enclosure Serves as Cable Power Connection
  • Works with SR, SWM, and MI Cables
  • 100 to 240 VAC Operation
  • RoHS Compliant
  • UL, CSA, FM, Haz. Area Approvals Pending
Heat Trace Controls and Panels / DTS / Digital Temperature Sensor

DTS Catalog Page

The DTS-HAZ digital thermostat kit is a microprocessor based temperature control and power connection kit used for freeze protection or process temperature maintenance of pipes or tanks protected by heat tracing products. This thermostat can be used with Constant Wattage, Mineral Insulated or Self regulating heating cables in ordinary area or Div 2 hazardous area locations.





  • 6 inch by 6 inch box which houses the temperature control and monitoring unit along with terminals for connecting instrument power, heating cable, and RTD.
  • 100 Ohm platinum RTD which can be pipe mounted or can be used to sense ambient air temperature for control.
  • Pipe stand off for direct pipe mounting and termination of the heating cable directly in the box. This feature reduces installation time and labor cost both to terminate the cable and material by eliminating the need for a heat trace power connection kit.
  • Soft Start


  • Freeze Protection of Piping
  • Process Temperature Maint
  • Tank Freeze Protection
  • Tank Process Temperature Maintenance
  • Hazardous Areas

B100 & E100 Heat Trace/ Freeze Protection Thermostats

  • B100 Direct Mount for Freeze Protection (Ambient)
  • ±1% Setpoint Repeatability
  • E100 Remote Mount for Heat Trace (Bulb & Capillary)
  • 22 Amp Resistive Switch
  • Single and Dual Output Models
  • Fast Response for Protection of Valves and Piping
  • NEMA 4X, 7 and 9 Enclosures
  • Third-party certifications: UL Listed, CSA, FM (models E121/122, B121 only)

B100 & E100 Catalog Page

Installation Manual


Integrated Temperature Control (DL)

The DL Series Single Point On/Off Temperature Controls represent the state of the art in heat tracing and are available in five models to handle a broad range of applications
Models include two ambient sensing thermostats, two line sensing thermostats and a line sensing solid state controller. These high-quality models combine temperature control and power connection in a convenient, easy to use and economical package.

DL Connection Accessories

The DL Series Installation Accessories for heat tracing products represents the state of the art in heat tracing. Each model in the series is designed to satisfy the demands of a particular operation. These high quality models combine a variety of functions in a convenient, easy to use and economical package.


Temperature Regulators