Extreme temperature cables: one construction from -50 °C to +125 °C
In industrial systems, the cable is often the first component to fail. In the cold, the jacket stiffens and cracks; in the heat, the insulation loses dimensional and dielectric stability. Add oils, detergents and continuous motion, and replacement becomes a recurring line in unplanned maintenance.
MOTIONTHERMLINE is designed to take the cable off the list of downtime causes. The line includes two series: HEATGUARD XT, rated for continuous operation from -50 C to +125 C, and FLAMESHIELD, from -40 C to +105 C.
Two layers, two functions. The construction is based on the Dual Insulation System. The inner layer (ISOTECH on the 125 series, FLEXITHERM on the 105) is a cross-linked material that provides electrical stability: dielectric strength ? 25 kV/mm, dielectric constant ?r 2.25, dissipation factor tan ? 0.001, linear capacitance of approximately 45 pF/m. Low capacitance reduces signal distortion and attenuation over long distances and improves compatibility with inverters. The outer layer (EXOTHERM PLUS on the 125, EXOTHERM on the 105) is the barrier against the environment: it stays flexible in the cold, resists mineral and synthetic oils, solvents, MUD fluids and hot/cold cycling, and is ECOLAB compatible.
Dynamic performance. The cables are designed for cable carriers and moving axes. Declared values, under defined test conditions: ? 5 million cycles, 20 m/s acceleration, 300 m/min travel speed, minimum bending radius 7.5 to 10 times the outer diameter.
Fire behaviour. All compounds are LSHF (Low Smoke Halogen Free). The cables are tested to IEC 60332-1-2 (flame propagation on a single cable), IEC 60332-3-24 Cat. C (bunched cables), EN 61034-2 (smoke density) and IEC 60754-2 (gas corrosivity). In enclosed spaces or near sensitive electronics, low smoke density and non-corrosive gases matter.
Electrical data and range. Rated voltage U0/U 0.6/1 kV, test voltage 4 kV for 5 minutes to EN 50395, maximum short-circuit temperature 160 C (? 1 s). The range covers single cores from 6 to 400 mm, control multicores from 0.50 to 2.50 mm with up to 41 conductors, and 4G power cables from 4 to 120 mm, shielded and unshielded. The line complies with NEK 606 for offshore use and with RoHS and REACH.
Where it is used. On the cold side: industrial cold rooms, freezer tunnels, outdoor installations. On the hot side: steel plants, hot presses, autoclaves, pasteurisation, oil & gas installations. Food & beverage adds high-pressure wash-downs and alkaline foams; robotics adds dynamic axes close to heat sources or in sub-zero environments.
One cable for heat, cold, oils and detergents also means fewer stock codes and faster selection at the design stage.
Do you have an application with critical temperature swings? Send us the minimum and maximum temperature, installation type and chemicals present: our engineering team will recommend the right construction.
