nVent RAYCHEM HSQ Mineral Insulated (MI) Trace Heating Cables


Trace heating cables for frost protection and temperature maintenance up to 600°C

RAYCHEM HSQ mineral insulated (MI) series resistance trace heating cables are suitable for frost protection and temperature maintenance of pipes and tanks/vessels involving temperatures up to 600°C. When the cables are terminated by laser welding, the exposure temperature can go up to 1000°C.

  • Sheath material: stainless steel 321
  • Continuous exposure temperature: 700°C (dependent on the splice used)

Key benefits:

  • Very robust
  • Suitable for high power outputs and temperatures
  • Available with laser welded splice connections
  • Approved for use in hazardous areas
  • Fast track service for heating units

TraceCalc Pro design software for safe design, product selection and advanced control and monitoring products complete the RAYCHEM HSQ trace heating system.

RAYCHEM MI heating cables are offered as bulk cable and as pre-terminated heating units. Pre-terminated MI heating units are factory tested and can be directly installed in the field.

Technical Specifications

Sheath materialStainless steel 321
ConstructionSingle conductor
Maximum power output150 W/m** (typical value, depending on the application)
Nominal voltage U0/U300/500 Vac*
Maximum continuous exposure temperature700°C*
Approved for use in
hazardous areas

For additional information, such as chemical resistance, refer to the product datasheet.

*Max power, voltage and withstand temperature are dependent on joining method. Refer to the datasheet. 

RAYCHEM XMI Heating Cable System Installation

Connection and Protection