Description
Thermon MIQ™ Mineral Insulated Heating Cable
High-Temperature Constant Watt Heating Cable for the Most Demanding Industrial Applications
The Thermon MIQ™ Mineral Insulated (MI) heating cable is a premium constant watt electric heat tracing solutionengineered for applications requiring extremely high process temperatures, exceptional mechanical durability, and long circuit lengths. Unlike self-regulating heating cables, MIQ delivers a precise and consistent heat output, making it the preferred choice for critical industrial processes operating under severe conditions.
Manufactured with a seamless Alloy 825 sheath and compacted magnesium oxide (MgO) insulation, MIQ offers outstanding resistance to corrosion, high temperatures, vibration, and harsh chemical environments. It is widely used in refineries, petrochemical plants, power generation, and heavy process industries where conventional polymer-insulated cables cannot perform reliably.
Product Overview
Thermon MIQ is designed for:
- High-temperature process maintenance
- Freeze protection under extreme conditions
- High watt density applications
- Long pipeline heat tracing (up to 1.6 km from a single power supply)
- Applications with continuous exposure to elevated temperatures
- Steam purge and harsh industrial environments
Key Features
- Constant watt heating technology
- Mineral insulated construction
- Alloy 825 seamless metal sheath
- Maximum maintenance temperature:
500°C (932°F) - Maximum exposure temperature (power off):
600°C (1112°F) - Maximum watt density:
262 W/m (80 W/ft) - Available in 300 VAC and 600 VAC
- Suitable for extremely long heating circuits
- Excellent mechanical strength
- Outstanding corrosion resistance
- Suitable for ordinary and hazardous (classified) locations
- Factory-assembled heater sets available (Type A, B, D & E)
Typical Applications
Thermon MIQ is widely installed in:
- Oil & Gas Processing Plants
- Petrochemical Facilities
- Chemical Manufacturing
- Refineries
- Power Generation
- Steam Lines
- Asphalt & Bitumen Systems
- Sulfur Processing
- Heavy Fuel Oil Lines
- High Temperature Process Pipelines
- Instrument Tubing
- Tank Heating Systems

Cable Construction
The MIQ heating cable consists of:
- Solid Alloy or Copper Conductors
- Compacted Magnesium Oxide (MgO) Insulation
- Seamless Alloy 825 Metal Sheath
This mineral insulated construction provides exceptional resistance against:
- High temperature
- Fire
- Moisture
- Chemicals
- Mechanical impact
- Corrosion
- Vibration
Advantages
- Extremely high operating temperatures
- Long circuit capability (up to 1.6 km)
- Constant and stable heat output
- Exceptional mechanical durability
- Ideal for harsh industrial environments
- Low maintenance requirements
- Excellent corrosion resistance
- Long service life
- Reliable performance in hazardous locations
Why Choose Thermon MIQ?
For industrial processes where reliability is critical and temperatures exceed the limits of polymer-insulated heating cables, Thermon MIQ delivers unmatched performance. Its mineral insulated construction, high watt density, and superior corrosion resistance make it one of the most trusted heat tracing solutions for heavy industry worldwide.














