Raychem Self Regulating

Invented by RAYCHEM, marketed by Celsun, Self-regulating cables automatically adjust their power output to compensate for temperature changes. The outer jacket, braid and inner jacket provide mechanical, chemical and electrical protection. The conductive core is extruded over the two parallel conductors and as the ambient temperature drops:

  • The core contracts microscopically. The number of electrical paths through the core increases. More heat is produced.

  • As the ambient temperature rises, the core expands and has fewer electrical paths. Less heat is, therefore, produced.


The self-regulating heating cable adjusts its power output along its entire length. This makes it a safe, reliable & economic solution for many applications.

Safe, because even if controller fails & your system is put on continuously (say, you forget to put it OFF) it will not go beyond specified uncontrolled temperature. That means there is no chance of FIRE HAZARD. On the other hand constant wattage based heating system will go on heating if controller fails.

Reliable, as the manufacturing technology of Raychem is so superior to other brand that it last for minimum 30 years. It comes with 10 years product warrantee! On the other hand constant wattage based floor heating life is much shorter.

Economic, as, self regulating technology helps in reducing power consumption as temperature increases. Once the temperature is achieved ( say 25 deg C) it will take exactly that much minimum power to compensate heat loss. So the temperature is maintained with economy of power consumption.