Heater Cable
M.I. Coax™ & M.I. Biax™ Heater Cable
M.I. Coax™ and M.I. Biax™ heater cables are mineral insulated heating elements designed for high-temperature, high-watt-density industrial applications. Built with durable metal sheathing and compressed mineral insulation, they deliver reliable performance, flexibility, and long service life.
M.I. Coax™ and M.I. Biax™ heater cables are advanced mineral insulated (M.I.) cable heaters designed for demanding heating applications requiring durability, flexibility, and high-temperature capability. These heaters are constructed using a conductor or multiple conductors embedded in tightly compacted mineral insulation, which is then enclosed within a malleable metal sheath. This design ensures excellent electrical insulation, efficient heat transfer, and strong mechanical protection.
Standard AKINSUN bulk heater cables typically use 80% Nickel – 20% Chromium alloy conductors combined with an Incoloy 600 sheath. These materials are selected for their high temperature resistance, durability, and corrosion resistance. Depending on the application requirements, other conductor alloys and sheath materials can also be used to optimize performance in specific environments.
The cable is supplied in a fully annealed state, allowing it to be easily shaped or formed to match the installation requirements. This flexibility enables the heater cable to be coiled, bent, or wrapped around equipment while maintaining reliable heating performance.
For proper heater design and application, AKINSUN engineering specialists recommend providing detailed information about the operating environment. Important factors include the expected maximum sheath temperature, number of temperature cycles, environmental conditions, instrumentation requirements, physical dimensions, electrical supply details (voltage, current, phases), and terminal configurations. This information allows engineers to design a heater solution that meets the exact requirements of the application.
M.I. Coax™ and M.I. Biax™ heater cables are widely used in industrial, research, and specialized heating systems where durability and high temperature capability are essential, including:
Process Heating Systems
Pipe and Valve Heating
Industrial Equipment Heating
Laboratory and Research Applications
Embedded or Cast-In Heating Systems
M.I. Coax Single Conductor
Table 1
| Catalog Number | Ohms ± 10% Per | Sheath Diameter | Wire Diameter | Max Voltage | Max Amps | Operating Limits Watts/Ft. | Minimum Bend Radius | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Feet | Meter | Inch | MM | Inch | MM | |||||
| MC040N – 16.3 | 16.3 | 53.70 | .040 | 1.00 | .006 | .15 | 90V | 3.50 | 100 | .063 (1/16″) |
| MC062N – 6.5 | 6.5 | 21.40 | .062 | 1.59 | .010 | .25 | 120V | 10.00 | 155 | .125 (1/8″) |
| MC093N – 3.0 | 3.0 | 9.90 | .093 | 2.36 | .015 | .38 | 220V | 17.40 | 190 | .118 (3/16″) |
| MC125N – 1.6 | 1.6 | 5.30 | .125 | 3.18 | .020 | .51 | 240V | 23.50 | 280 | .250 (1/4″) |
| MC188N – 0.70 | 0.7 | 2.31 | .188 | 4.78 | .032 | .81 | 240V | 30.00 | 420 | .375 (3/8″) |
M.I. Biax Double (2) Conductor
Table 2
| Catalog Number | Ohms ± 10% Per | Sheath Diameter | Wire Diameter | Max Voltage | Max Amps | Operating Limits Watts/Ft. | Minimum Bend Radius | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Feet | Meter | Inch | MM | Inch | MM | |||||
| MB040N – 32.0 | 32 | 105 | .040 | 1.00 | .006 | .15 | 60V | 3.50 | 75 | .063 (1/16″) |
| MB062N – 13.0 | 13 | 43 | .062 | 1.59 | .010 | .25 | 120V | 6.00 | 185 | .125 (1/8″) |
| MB093N – 6 | 6 | 19.7 | .093 | 2.36 | .015 | .38 | 120V | 10.00 | 225 | .118 (3/16″) |
| MB125N – 3.2 | 3.2 | 10.5 | .125 | 3.18 | .020 | .51 | 240V | 15.00 | 310 | .250 (1/4″) |
| MB188N – 1.4 | 1.4 | 4.6 | .188 | 4.78 | .032 | .81 | 240V | 23.50 | 390 | .375 (3/8″) |
Watt Density vs Surface Temperature °F
| Watt Density – Watts / Sq. Inch. | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 |
|---|---|---|---|---|---|---|---|---|---|---|
| Surface Temperature on Cable | 500 | 800 | 975 | 1070 | 1200 | 1300 | 1400 | 1500 | 1560 | 1630 |
Temperature measured in still air at 70°F ambient on straight lengths at 120 volts