FSU/FSUw Self-Regulating Heating Cables – Tmax 250 °C

FSU/FSUw Self-Regulating Heating Cables – Tmax 250 °C

Range of Self-Regulating Heating Cables

FSR Self-Regulating Heating Cables – Tmax 85 °C

FSE/FSEw Self-Regulating Heating Cables – Tmax 100 °C

FSS Self-Regulating Heating Cables – Tmax 225 °C

FSU/FSUw Self-Regulating Heating Cables – Tmax 250 °C

SM Self-Regulating Heating Cables – Tmax 40 °C

G-Trace Self-Regulating Heating Cables – Tmax 60 °C

FLVw Self-Regulating Heating Cables – Tmax 85 °C

CRH Self-Regulating Heating Cables – Tmax 250 °C

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Electro-Therm Products Heating Cables – Electric Heat Tracing Self-Regulating Heating Cables FSU/FSUw Self-Regulating Heating Cables – Tmax 250 °C

FSU and FSUw are self-regulating heating cables designed for freeze protection and temperature maintenance of pipes and vessels.

They provide maximum flexibility by being cut to length on site, adapting perfectly to installation layouts without the need for complex design calculations.

Thanks to their self-regulating technology, FSU cables automatically adjust their power output according to the surface temperature.

These heating cables will not overheat or burn out, even when overlapped.

The self-regulating heating cables are certified to DNV, ATEX, IEC, IECEx, and comply with European Union requirements, ensuring optimal safety and reliability in the most demanding environments.

For specific requirements, please contact us.

Technical information

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FSU and FSUw self-regulating heating cables provide safe and efficient thermal protection for temperature maintenance and freeze protection.

They are distinguished by their ease of installation, enhanced durability with a corrosion-resistant fluoropolymer outer jacket, and their ability to deliver up to 75 W/m at 10 °C.

FSU Cable Product Specifications – Maximum Allowable Exposure Temperature: 250 °C

Maximum Continuous Exposure (energized)	250°C
Maximum Allowable Exposure (de-energized)	250°C
Minimum Operating Temperature	-40ºC
Temperature Classification	15FSU - 60FSU T3 (200°C) 75FSU T2 (300°C)
Power Supply	12 - 277 V AC
Cable Dimensions	FSU-NF 12.5 x 5.8mm +/- 0.5mm
Minimum Installation Temperature	-40°C
Minimum Bending Radius	FSU- NF - 35mm
Weight (kg/100 m)	FSU-NF - 14.6 kg
Maximum Protective Braid Resistance	18.2 Ohm/km
Cable Gland Thread	FSU-NF - M20

FSUw – The FSUw self-regulating heating cable ensures effective freeze protection and optimal temperature maintenance of pipes and vessels.

It combines intrinsic safety, simplified installation, and high performance up to 100 W/m, while withstanding temperatures of up to 250 °C.

Maximum Continuous Exposure Temperature (energized)	250°C
Maximum Allowable Exposure Temperature (de-energized)	250°C
Minimum Operating Temperature	-40ºC
Temperature Classification	100 FSUw T2 (300°C)
Power Supply	12 - 277 V AC
Cable Dimensions	FSUw-NF 14.8 x 6.0mm +/- 0.5mm
Minimum Installation Temperature	-40°C
Minimum Bending Radius	FSUw-NF - 35mm
Weight (kg/100 m)	FSUw-NF - 19.5 kg
Maximum Protective Braid Resistance	18.2 Ohm/km
Cable Gland Thread	FSUw-NF - M25

FSU Heating Cables – Maximum Circuit Length (m) according to Breaker Ratings
Reference	Start-up Temperature (°C)	230V 10A	16A	20A	32A	50A
15FSU	10	76	122	154	172	172
	0	70	112	140	172	172
	-20	62	98	122	172	172
	-40	52	82	102	164	172
30FSU	10	52	82	102	122	122
	0	46	74	92	122	122
	-20	40	66	82	122	122
	-40	34	54	68	110	122
45FSU	10	38	62	76	100	100
	0	34	56	70	100	100
	-20	30	50	62	98	100
	-40	22	34	44	70	100
60FSU	10	30	50	62	86	86
	0	28	44	56	86	86
	-20	20	32	40	62	86
	-40	12	18	24	38	60
75FSU	10	22	34	44	70	76
	0	16	26	34	54	76
	-20	12	18	24	38	60
	-40	8	12	14	22	36
To be used with Type C circuit breakers in accordance with IEC EN 60898

FSUw – Maximum Circuit Length (m) according to Breaker Ratings

In cold environments, ensuring the continuity of industrial operations requires effective freeze protection.

Application Example:
In industrial environments and cold climates, water, chemical pipelines, and storage tanks must be protected against freezing in order to ensure service continuity and process safety.

Problem Example:
Thermal insulation alone is insufficient. For example, a 25 mm diameter water pipe at 5 °C, insulated with 25 mm of insulation, will reach freezing point in less than one hour if the ambient temperature is –10 °C. Using 150 °C steam is not a suitable alternative for simple freeze protection, especially as condensate return lines themselves are at risk of freezing.

Solution:
The most reliable and effective approach is the use of low-power electric heating cables.

FSU and FSUw self-regulating heating cables are specifically designed for:

-Freeze protection of pipelines and vessels

-Accurate process temperature maintenance in industrial applications

Finally, it should be noted that the choice of control system has a direct impact on operating costs: optimized control helps reduce energy consumption while ensuring installation safety.

Self-Regulating Heating Cables – FSU/FSUw are used in the following sectors:

-Water Treatment and Technical Installations

-Industrial Buildings and Outdoor Installations

-Construction

-Food & Beverage Industry

-Pharmaceutical Industry

-Chemical & Petrochemical

-General Industry

This list is not exhaustive.

Technical Data Sheet – Self-Regulating Heating Cables – FSU/FSUw

Instructions FSU-NF

Design, Installation and Maintenance Manual

See the heating cable range graph: maximum exposure temperature and power capacity.

Start-up Temperature (°C)

To be used with Type C circuit breakers in accordance with IEC EN 60898.