High Temperature Self Regulating Heat Tracing Cable

Marathon Heaters self regulating heating cable provide the most versatility in heat trace design and applications. Constructed of a Semi-conductive heater matrix extruded between parallel buswires, a self regulating cable adjusts its output to independently respond to ambient temperatures all along its length. As temperatures increase,the heater’s resistance increase which lower the output wattage. Conversely, as the temperature decrease, the resistance decreases and the cable produces more heat. So it is no need thermostat in some applications. It will never overheat or burnout even when wrapped by itself(overlapped). It can be cut to any length. So it is a convenient ,easy use and energy saving product.


1. Bus wires
2. Semi-conductive self regulating matrix
3. Inner Jacket
4. Copper /Nickle plated copper
5. Outer Jacket


Construction Data

Buswire size 1.5mm nickel copper
Heating elements Fluoropolymer heating mixture
Insulation Fluoropolymer/FEP
Braiding Tinned copper
Outjacket Fluoropolymer/FEP


Graph of HTSRH


Max length(m)vs circuit breaker size

AC220V Max circuit length(m) vs CB size
Model  Start-up temp.°C 32A 40A
HTSRH 10 53 66
0 48 60
-20 44 55
-40 39 49

Download Catalogue

Output wattage at 10°C 40, 55, 60, 65 W/M
Braiding covering area Over 85%
Max. maintain temp @ 10°C 135°C
Max. exposure temp. 205°C
Min.installation temp. -40°C
Bending radius 10 times*cable thickness
Voltage 110-120/208-277 V
Insulation color Dark Grey
Regular size to insulation 9.8*3.3 mm (Width*Thickness)