Back To Top
Nelson™ Heat Trace Type LLT Long Line Self-Regulating Heater
Nelson™ Heat Trace™ Type LLT Long Line Self-Regulating Heater
Nelson™ Heat Trace LLT Series self-regulating heater cable is ideal for use in maintaining fluid flow under low ambient conditions.
The product is used for freeze protection and low watt density process temperature systems that require extended continuous circuit lengths. LLT Series heating cables are available in 240 Volts and is designed for use in ordinary (unclassified) and hazardous (classified) locations.
Nelson™ Heat Trace Type LLT Long Line Self-Regulating Heater


Certifications and Compliances
UL Listed: Ordinary (Unclassified) Locations. CSA Certified: Hazardous (Classified) Locations
Canadian Standards Association
-J option: Class I, Division 2, Groups A, B, C, D; Class I, Zone 1; Group IIC
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
Temperature Classification (T Code)
T5 100 °C
Bus Wire Size
10AWG Copper Conductors
Minimum Installation Temperature
-40 °C (-40 °F)
Minimum Bend Radius
25.0 mm (1.0 in) at -40 °C (-40 °F)
7.5 mm x 15.0 mm (0.295 in x 0.591 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 LLT heater cable is parallel, self-regulating with a radiation crosslinked conductive heating core extruded continuously over two parallel 10-gauge bus wires. A primary dielectric jacket is thermally bonded to the heating core to prevent moisture pe
  • Operating principle: The heating core varies power output inversely with temperature at every point along the heater length, reducing any heat build up at portions of the piping system. This feature also permits the heater to be overlapped without creati
  • Voltage ratings: 240 Vac products are suitable for use on supply voltages of 208-277 Vac. See catalog pages for details.