Electro-Therm Products Heating Cables – Electric Heat Tracing Constant Wattage Heating Cables AHT Constant Wattage Heating Cables – Tmax 500 °C

AHT Constant Wattage Heating Cables – Tmax 500 °C

PowerHeat AHT is a high-power, high-temperature, constant wattage heating cable with exceptional mechanical strength.

It is designed for freeze protection and process temperature maintenance of pipelines and vessels.

The cable can withstand a maximum exposure temperature of 500 °C, making it the highest temperature-rated cut-to-length heating cable in the world.

Its aluminium outer sheath provides the highest level of mechanical strength among all constant wattage heating cables available on the market.

The AHT heating cable is approved for use in both non-hazardous and hazardous areas in accordance with international standards. It is certified CNEX, DNV, ATEX, IEC, IECEx, and complies with European Union (CE) requirements.

Thanks to its aluminium sheath, the cable can be easily formed around valves, pumps, and instruments.

Please contact us for any specific requirements.

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PowerHeat (AHT) Constant Wattage Heating Cable is engineered for the most demanding environments: combining high power output with extreme mechanical strength thanks to its aluminium sheath, and exceptional thermal resistance up to 500 °C — a world record for a cut-to-length heating cable.

The AHT heating cable is available in 15, 30, 50, 70, 100 and 150 W/m ratings.

Product Specification – Maximum Exposure Temperature: 500 °C

Maximum Allowable Exposure Temperature	500 °C
Maximum Operating Temperature (Energized)	350 °C Refer to the temperature data of the item to be heated
Minimum Operating Temperature	-40 °C
Power Supply	12 à 277 VCA
Cable Dimensions	AHT : 10,7 x 7,7 mm ± 0,5 mm
Minimum Installation Temperature	-40 °C
Minimum Bending Radius	AHT : 50 mm
Weight (kg/100 m)	AHT : 16,5 kg
Cable Gland Thread Size	AHT : M20

Maximum Circuit Length (m)
Product Reference	115V	230V
15 AHT	59	118
30 AHT	42	83
50 AHT	32	64
70 AHT	26	54
100 AHT	23	46
150 AHT	19	37
For a voltage drop variation of 10%

Maximum Equipment Operating Temperature (°C)

Nominal Heating Power (W/m)	AHT
15 AHT	350
30 AHT	323
50 AHT	276
70 AHT	140
100 AHT	140
150 AHT	36
Surface Temperature Limits in accordance with EN 50014*

PowerHeat (AHT) Constant Wattage Heating Cable is ideally suited for freeze protection and process temperature maintenance of pipelines and vessels, even under extreme conditions.

Application Example:
Instrumentation and sampling lines must be maintained at optimal temperatures to ensure the reliability of data analysis.

Problem Example:
When exposed to temperatures above 250 °C (e.g. high-pressure steam), most self-regulating heating cables suffer damage. Mineral Insulated (MI) cables are often used in such applications, but they are factory-terminated, involve long lead times, and are complex to install on site.

The Solution – AHT

The AHT heating cable is a high-temperature constant wattage system offering:

-Withstand capability up to 500 °C (350 °C energized) without damage,

-Cut-to-length flexibility on site, ideal for installations with variable routing,

-Easy connection with junction kits or connection boxes,

-Minimum circuit length of 1 m, directly compatible with standard supply voltages (e.g. 230 V), unlike MI cables.

The AHT heating cable provides a flexible, fast-to-install and reliable alternative for temperature maintenance of instrumentation lines in extreme environments.