Third Rail Heating Cable

Thermal-Flex third rail heating cable is ideally suited for higher temperature applications where watt density is required at all times. Our constant wattage heating cable design consists of a nichrome wire wrapped around parallel insulated buss wires.  At specific intervals, a short section of insulation is removed from alternating buss wires to create connection nodes for the nichrome wire.  The nichrome wire is soldered to the buss conductors creating a network of parallel resistors along the entire length of the heating cable.  The cable can be designed to operate at voltages between 120 and 800 Volts AC/DC. The PFA jacket and nickel plated copper braid provide additional protection for use in corrosive and hazardous areas.

Constant wattage heating cables maintain their integrity in temperatures up to 482° F (250° C), and can be exposed to intermittent temperatures of 500° F (260° C) maximum.  The heating zones of constant wattage heating cables create an extremely rugged heat source that can withstand thermal shock and movement.

Third Rail Heating Cable, Channel and Rail Clips

Features

  • Flexible
  • Superior Thermal Aging Characteristics
  • Uniform Heat Output
  • Not Subjected to In Rush Current
  • Chemically Inert
  • Outstanding Weathering Properties
  • Resists Flame Ignition and Flame Spread
  • Temperature Rating: 482° F (250° C) Maximum Continuous Exposure Temperature
  • Applied Voltage: 600 to 750 Volts DC (as required)
  • Watt Density: 30-40 Watts per Foot (as required)

Third Rail Heating System

Thermal-Flex third rail heating systems feature a robust, industrial constant wattage heating cable, high temperature fiberglass containment channel and rail clips for secure attachment. Our containment channel and rail clips are offered in a number of different sizes and geometries permitting the system to be used with various types of rail.

Third Rail Heating Cable System