Mineral Insulated High Temperature

Mineral Insulated High Temperature
  • Constant Wattage Series Resistance Heating Cable Sets
  • Process Temperature Maintenance to 1100°F (593° C)
  • Maximum Exposure Temp, Power Off, 1200°F (648° C)
  • Corrosion Resistant Alloy 825 or Stainless Steel Sheath
  • Factory Assembled Cable Sets — Ready for Installation
  • Fully Annealed Sheath allows Field Bending
  • Min. Bend Radius = 6 X Cable Diameter
  • For Use on Metal Pipes only
  • Approvals
    Factory Mutual (FM) Approved and CSA certified for ordinary areas. FM and CSA Approved for hazardous (classified) areas.
    CSA and FM Approved:
    • Class I, Div. 1* & 2 Groups A*, B, C, D (gases, vapors)
    • Class II, Div. 1* & 2 Groups E*, F, G (combustible dust)
    • Class III, Div. 2 (easily ignitable fibers and fillings)
    • Consult Chromalox for T ratings
       *CSA Only
       *Stainless steel not 3rd party approved.
    ATEX Approved:
    • II 2 G Ex e II T1 to T6 Gb
    IECEx Approved:
    • Ex IIC T1 to T6 Gb

Chromalox MI mineral insulated heating cables provide rugged and reliable heat tracing for a variety of demanding applications. The high nickel alloy sheath, magnesium oxide dielectric insulation and resistance wire construction allow the tracing of equipment up to 1100°F maintenance temperatures and excellent resistance to many corrosive environments. At lower temperatures, watt densities of up to 50 W/Ft can be designed. Please contact factory for cable maintenance temperature above 400°F.

WARNING — A ground fault protection device is required by NEC to minimize the danger of fire if the heating cable is damaged or improperly installed. A minimum trip level of 30 mA is recommended to minimize nuisance tripping.

  • Freeze Protection
  • Freeze Protection, High Exposure Temperature
  • Process Maintenance, Low Temperature
  • Process Maintenance, High Temperature
Features of MI Cable
  Max. Maintenance Temp. (°F)    900
  Max. Exposure Temp. (°F) Power Off   1,100
  Max. W/Ft.   80
  Max. Circuit Length (Ft.)   500
  Buss Wire Size    N/A
  Voltages Up to 600
  Hazardous Ratings    Yes
  Usable on Plastic Pipe    No
  Cut-to-Length in Field    No
  Field Splicable    No
  Can be Overlapped    No
  Output Varies with Temp.    No
  Varies Output Along Length    No
  Monitor Wire Available    No


MI Corrosion Selection Guide
 Moisture   Yes
 Aqueous Solutions of Inorganic Compounds   No
 Liquids Organic Chemicals Acids or Bases   Yes
 Acids or Bases   No

C - Tin-Plated copper metallic braid for additional protection and ground path
CT - Fluoropolymer corrosion resistant overjacket over braid for hostile/corrosive environments
CR- TPR overjacket over braid for protection against certain inorganic chemical solutions

This is a recommendation guide. Chromalox cannot warrant any Electric Heat Trace against failure by sheath degradation if such failure is the result of operating conditions beyond the control of the heater manufacturer. It is the responsibility of the purchaser to make the ultimate choice of sheath material based on knowledge of the chemical composition of the corrosive solution, character of materials entering the solution, and controls which maintains the process.

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