Electro-Therm Products Heating Cables – Electric Heat Tracing Self-Regulating Heating Cables FSR Self-Regulating Heating Cables – Tmax 85 °C

FSR Self-Regulating Heating Cables – Tmax 85 °C

Freezstop Regular (FSR) is a self-regulating heating cable designed for freeze protection and temperature maintenance of pipes and vessels, particularly in the construction and refrigeration industries.

Certified to CNEX, DNV, ATEX, IEC, IECEx and CE standards, this self-regulating heating cable is suitable for use in both hazardous and non-hazardous areas in compliance with international regulations.

It provides proven reliability and enhanced safety, even in the most demanding environments.

The FSR heating cable poses no risk of overheating or burnout, even when overlapped, thanks to its self-regulating output in response to pipe temperature.

*Available with a corrosion-resistant thermoplastic outer jacket (FSR-CT) or a fluoropolymer outer jacket for enhanced protection (FSR-CF), it meets the most stringent requirements of industrial installations.

For specific requirements, please contact us.

Technical information

Applications

Industries

Downloads

The FSR self-regulating heating cable provides a safe, adaptable, and efficient solution for freeze protection and temperature maintenance.
It stands out for its ease of installation, its ability to automatically adjust to pipe temperature, and its inherent protection against overheating.

Available with a corrosion-resistant thermoplastic outer jacket (FSR-CT) or a fluoropolymer outer jacket for enhanced protection (FSR-CF), it meets the most stringent requirements of industrial installations.

Product Specifications – Maximum Exposure Temperature: 85 °C

Freezstop Regular is available with output ratings of 10, 17, 25, 31, and 40 W/m, as illustrated in the graph below. The graph shows the nominal output at 230 V when installed on insulated metal pipes.

Maximum Continuous Exposure Temperature (energized)	85°C
Maximum Allowable Exposure Temperature (de-energized)	85°C
Minimum Operating Temperature	-40ºC
Temperature Classification	Up to 31 W/m: T6 Classification (85 °C) 40 W/m or 277 V: T4 Classification (135 °C)
Power Supply	12 - 277V AC
FSR Cable Dimensions	12.95 x 5.95mm +/- 0.5mm
Minimum Installation Temperature	-40°C
Minimum Bending Radius	-FSR-CT 35mm -FSR-CF 35mm
Weight (kg/100 m)	-FSR-CT - 12.9 kg -FSR-CF - 14.8 kg
Maximum Braid Resistance	18.2 Ohm/km
Gland Thread	M20

Maximum Circuit Length (m) according to Breaker Ratings
Reference	Start-up Temperature (°C)	230v	10A	16A	20A	32A
10FSR	10		136	198	198	198
	0		122	188	188	188
	-20		108	174	176	176
	-40		96	154	166	166
17FSR	10		92	148	152	152
	0		84	134	144	144
	-20		74	118	136	136
	-40		66	106	128	128
25FSR	10		74	118	124	124
	0		68	108	120	120
	-20		60	94	112	112
	-40		52	84	106	106
31FSR	10		58	92	112	112
	0		52	84	104	106
	-20		46	74	92	100
	-40		42	66	82	94
40FSR	10		46	74	92	98
	0		42	66	84	94
	-20		36	58	74	88
	-40		32	52	66	84
To be used with Type C circuit breakers in accordance with IEC 60898

Designed for the construction and refrigeration sectors, the FSR self-regulating heating cable is ideal for freeze protection and temperature maintenance of pipes and vessels, both in non-hazardous and ATEX classified areas.

Application Example:
In cold climate regions, water and chemical fluid pipelines must be effectively protected to ensure service continuity in both building and industrial environments.

Problem Example:
Thermal insulation alone is not sufficient to prevent freezing. For instance, a 25 mm diameter pipe initially at 5 °C, insulated with 25 mm of insulation, will reach freezing point in less than one hour if the ambient temperature drops to –10 °C.

Using 150 °C steam as an energy source is not suitable for simple freeze protection, especially since condensate lines themselves are at risk of freezing.

Solution:
The most practical and effective approach is to use electric heat tracing with low specific power heating cables. This method provides reliable freeze protection tailored to the actual requirements.

Finally, it is important to emphasize that the choice of control system has a direct impact on operating costs. Optimized control reduces energy consumption while ensuring the safety of the installation.