Heating cable Danfoss 395W, 22 m (18 W/m) — self-regulating pipe trace heating

Danfoss heating cable 395W / 22 m (18 W/m) is a self-regulating pipe trace heating solution designed to prevent freezing and to maintain required temperatures in pipes, gutters and small tanks. The cable automatically adjusts its heat output in response to ambient temperature, providing higher wattage in colder areas and reducing power where less heat is needed. With a linear output of 18 W/m and a total rated output of 395 W, this heating cable is intended for frost protection and temperature maintenance in residential and light commercial installations when used with suitable controllers and accessories.

Advantages

The self-regulating design reduces the risk of overheating and can lower operating costs by decreasing power consumption where heat is not required. The cable’s flexibility and consistent linear output simplify routing along pipes and gutters. Its compatibility with standard mounting methods and control components allows integration into existing frost protection systems. Built by a recognized manufacturer, it is made for durability and reliable performance in typical outdoor and indoor freezing conditions.

Suitable for

• Freeze protection of water supply and drain pipes in residential buildings
• Preventing ice buildup in gutters and downspouts
• Temperature maintenance in small storage or process tanks
• Trace heating on metal and plastic pipework where point heating is not required

When it may not be suitable

This cable is intended for frost protection and temperature maintenance with a linear power rating of 18 W/m; it may not be suitable for applications that require higher continuous surface temperatures or concentrated point heating. For large commercial systems, long-distance trunk runs, or installations requiring certified hazardous-area approvals, alternative heating solutions or additional design measures may be necessary.

Key specifications

• Rated linear output: 18 W per metre (output varies with ambient temperature)
• Total rated output: 395 W for the 22 m length
• Cable length: 22 metres
• Type: self-regulating parallel heating cable suitable for pipe tracing
• Typical applications: frost protection and temperature maintenance for pipes, gutters, small tanks

How to use

Install the heating cable along the length of the pipe, gutter or tank using appropriate mounting methods such as aluminium foil tape or cable clips recommended for trace heating. Ensure the cable is installed in direct contact with the surface to be heated and avoid crossing or overlapping the cable on itself. Connect the cable to a suitable power supply and control device that provides on/off switching or thermostat control; follow local electrical codes and employ a qualified electrician for final connection. Use end seals and splice kits certified for the cable type when making terminations or joining sections.

What to consider before purchase

• Confirm required length and total power for the run to ensure 22 m and 395 W meet application needs
• Verify compatibility with pipe material and mounting method (metal vs. plastic pipes)
• Plan for a suitable control device or thermostat and required installation accessories (tape, clips, seals)
• Check local electrical regulations and, if needed, consult a qualified installer for sizing and connection

Usage recommendations

For reliable frost protection and energy-efficient operation, pair the Danfoss self-regulating heating cable with a temperature controller or thermostat and install under guidance of local electrical standards. Avoid overlapping the cable and ensure proper sealing of terminations and splices to maintain long-term performance.