Mineral Insulated Cable (MSS)

The MSS range of stainless steel sheathed Mineral Insulated (MI) heating cable has been developed to meet the specific need for a cable having a high temperature cabability and electrical resistance values needed for long circuit lengths. To meet the requirement, Heat Trace combined a stainless steel sheath with heating conductors to enable an operating temperature of 600ºC with resistance values from 2.1Ω/km up to 36100Ω/km per conductor. However, an HDPE outer sheath must be used when the cable is used in special situations, such as corrosion resistance or burying or snow melting application. MI cables have excellent mechanical strength and are resistant to corrosion. They are series resistance heaters which must be designed to provide the required heat output.

Example of Applications

  • Freeze protection of high exposure pipelines (e.g. steam manifolds)
  • Temperature maintenance of pipelines


  • Circuit lengths up to 5-6km
  • Suitable for single or 3 phase applications
  • Metal jacket for increased mechanical strength and fire resistance