Self-regulating heating cable 11W/m

The self-regulating heating cable is available in stock in the following lengths:

Self-Regulating Heating Cable for Water Pipes recommended use:

For internal pipe installations, we recommend using constant-wattage heating cables instead of self-regulating ones. They are more affordable and consume less energy – with a steady output of 7.5-10W/m. If you are unsure about the right option, feel free to ask us for advice.
For sewer pipe protection, a suitable self-regulating cable can be found [at this link].

How Does a Self-Regulating Heating Cable Work?
A self-regulating heating cable adjusts its output per meter depending on the ambient temperature – but never switches off completely, not even during summer! For example, the cable provides approx. 11W/m at +10°C in dry conditions. However, in a drinking water or sewer pipe, the cable should already be off when the pipe temperature exceeds +2°C. Energy efficiency can be significantly improved by using a socket thermostat, which ensures the cable is switched off when there’s no risk of freezing.

The cable includes a shielding layer, which makes it electrically safe. For in-pipe installations, we strongly recommend connecting the heating cable through a residual current device (RCD) for additional protection.
Based on practical experience, a self-regulating heating cable installed on an insulated pipe can heat the pipe to around +40–60°C even without a thermostat.

Self-Regulating Heating Cable Key Advantages
Can be cut to length directly on-site
Can cross over itself during installation without risk of overheating
Ideal for use with both plastic and metal water pipes.

Installation on External Pipe Surface
For plastic pipes:

Apply aluminum tape along the full length under the heating cable.
Lay the heating cable onto the pipe.
Secure the cable over its entire length with aluminum tape for optimal heat distribution and quick transfer to the pipe.

For metal pipes:

Simply affix the heating cable directly using aluminum foil tape.

Tip: When selecting pipe insulation, choose one size larger to leave room for the cable between the pipe and the insulation.

Installation Inside the Pipe
The in-pipe heating cable is inserted using a compression fitting through a T-connector, as shown in illustrations (not included here).
The cable has a diameter of 9.5 mm at the end.
It must enter the pipe straight or with minimal bending – not suitable if there are shut-off valves or sharp angles (90° elbows).

In practice, for a 1″ pipe, the cable can be pushed in up to ~20 meters. Longer runs may require assistance tools.

In-pipe installation is ~20% more efficient than external application (when used with a thermostat), as it transfers heat directly into the water.

Advantages of the Preassembled Set:
Includes factory-made waterproof connections
Still allows you to cut and branch the cable on-site as needed
Suitable for both external and internal pipe installation, without thermostat, and without risk of overheating

Technical Specifications
Dimensions: 8.0 × 5.0 mm, with meter marking
Max ambient temp (powered): +65°C
Minimum pipe size (for in-pipe use): ¾” (20 mm) inner diameter
Minimum installation temp: -10°C
Minimum bend radius: 35 mm
Voltage: 230V
Output: 11W/m at +10°C when installed on pipe
Max length:
100 m when installed dry (e.g. under insulation on pipe)
60 m when installed inside potable water pipe, with a 10A circuit breaker

Note: Even with plastic pipes, freezing must never be allowed! Ice expands by ~9%, which can crack fittings and joints even if the pipe itself holds, leading to leaks.

Maximum Permissible Heating Cable Length by Breaker Size and Activation Temperature:
Product Circuit Breaker (C-curve) +10°C / 0°C /  -10°C
Self-regulating Water 10A – 125m / 116m / 102m
Self-regulating Water 16A – 205m / 167m / 143m

Pipe Insulation Guide:
Heating power requirements depend on:
Minimum ambient temperature
Pipe diameter
Thickness of pipe insulation

Contact us for help with selecting the right combination.

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