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Nelson™ Heat Trace Type CLT Self-Regulating Heaters
Nelson™ Heat Trace™ Type CLT Self-Regulating Heaters
Nelson™ Heat Trace CLT Series heating cables provide an industrial and commercial-grade solution for maintaining fluid flow under low ambient conditions.
These self-regulating, cut-to-length cables are normally installed in commercial and light industrial applications, to maintain pipe temperature and/or prevent freezing in ambient temperatures down to -40 °C/-40 °F. CLT Series heating cables are available in 120 and 240 voltages and are designed for use in ordinary (unclassified) locations. Typical applications for this product are freeze protection and low watt density process temperature systems such as product pipelines, fire protection, process water and dust suppression systems.
Nelson™ Heat Trace Type CLT Self-Regulating Heaters


Certifications and Compliances
UL Listed, CSA Certified: Ordinary (Unclassified) Locations
Maintain Temperature
65 °C (150 °F)
Maximum Continuous Exposure Temperature
65 °C (150 °F) continuous power on
Maximum Intermittent Exposure Temperature
85 °C (185 °F) 1000 hours cumulative exposure
Bus Wire Size
18AWG Copper Conductors
Minimum Installation Temperature
-40 °C (-40 °F)
Minimum Bend Radius
12.0 mm (0.50 in) at -40 °C (-40 °F)
6.7 mm x 11.1 mm (0.264 in x 0.437 in)
Connection kits, thermostats, contactors, junction boxes, tape, warning signs, custom control, and monitoring and power panels are available. See catalog pages for details


  • Type CLT self-regulating heater cable is a parallel circuit electric heater strip. An irradiation cross-linked conductive polymer core material is extruded over the multi-stranded, tin-plated, 18-gauge copper bus wires. The conductive core material incre
  • Operating principle: The parallel bus wires apply voltage along the entire length of the heater cable. The conductive core provides a continuous parallel heating element permitting the cable to be cut to any length in the field with no dead or cold zones
  • Voltage ratings: 240 Vac products are suitable for use on supply voltages of 208-277 Vac. See catalog pages for details.