Skip to main content

Please Select Your Country/Language Preferences

Power-Limiting Heat Tracing Technology

Power-Limiting Heat Tracing Technology

nVent RAYCHEM power-limiting heating cables (VPL) are designed for freeze protection and process temperature maintenance requiring high power output and/or high temperature exposure.

nVent RAYCHEM parallel heat trace cables are parallel heaters formed by a coiled resistor alloy heating element wrapped around two parallel bus wires. At a fixed distance, the insulation is removed from the alternate bus wires to form a heating zone.

The positive temperature coefficient effect (PTC) of the heating element reduces power output as ambient temperature increases. This effect allows the VPL power-limiting cable to be overlapped by reducing the temperature of the heating element at the overlap points.

nVent RAYCHEM power-limiting heating cables feature 

  • Maintain temperature e up to 455°F (235°C)
  • Exposure temperature up to 500°F (260°C) 
  • Circuit lengths up to 450m from a single power source
  • Supply voltage up to 480 VAC

Contact Us

Unsure where to start? For all your design, product and service needs, reach out to one of our experts today.

Where to Buy

Need to find our pipe heat trace products near you? Use our locator to find a distributor in your area.