Self Regulating Heating Cables

At low temperatures, there are many conductive paths, allowing current to flow between the bus wires.

At high temperatures, the polymer expands, reducing the number of the conductive paths, and thus reducing current flow.


Conductive Polymers in Action and technology



Power output varies with temperature

As pipe temperature increases, power output decreases


The correct amount of heat has to be supplied to the pipe

Cold sections of the pipe get more heat input

Warm sections of the pipe get less heat input


Advantages of  SR heat-tracing cables

  • Output power changes with temperature
  • Will not overheat and damage
  • Overlapping cable is possible
  • Parallel conducting paths
  • Can be cut to length and terminated on site
  • According to need can use two-way or three-way connection
  • Corrosion resistant jacket
  • Can be used at 120 volts, 208-277 volts
  • Highest maintain temperature up to 150  degC
  • Maximum exposure temperature up to 250 degC
  • Can be used for to heat plastic pipes
  • Approved for use in non-hazardous and hazardous areas

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