Self Regulating Trace Heating | Eltherm ELSR-M Trace Heating Cable (Up to 65 Degrees Celsius)
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Self Regulating Trace Heating
Trace Heating Cable | Eltherm ELSR-M
Eltherm ELSR-M is a versatile self-regulating trace heating cable that provides process temperature maintenance and frost protection to pipework, instrument lines, tanks and drums up to 65° Celsius.
The self-regulating trace heating technology allows the heating cable to increase or decrease its heat output based on the ambient temperature, providing energy-efficient operation and preventing overheating. ELSR-M is suitable for use in various industrial applications where maintaining consistent temperatures is critical for process integrity and safety including:
- Heat tracing on pipes, pumps and valves
- Food processing industry
- Automotive
- Heating of tube bundle cables for water analysis
- Heat tracing on vessels
Our Team of Trained Sales Engineers are available to advise and support your trace heating enquiries – this includes design and supply of complex multi-kilometre, major-project systems to custom heat trace cable kits for the protection of winterisation against plant and factory facilities.
Eltherm ELSR-M Trace HEAting CABLE – SPECIFICATION
Eltherm ELSR-M self-regulating trace heating wattages per metre at 10°C – 10  and 15 watts.
- Nominal Supply Voltage :Â 230v
- Maximum Exposure Temperature : Power off 65°C, power on 65°C
- Minimum Installation Temperature : -45° Celsius
- Minimum Heater Cable Bend Radius :Â 25mm
- Heater Cable Outer Jacket: TPE-O
- Bus Wire: Nickel plated copper
- Bus wire – nickel plated copper, 0.62 mm²
- Self-regulating heating element
- Insulation
- Protective braid – (Cu, tin plated)
- Outer jacket – TPE-O
- Protective conductor connection – see 4 or Cu, tin plated with aluminium foil
Eltherm ELSR-M self-regulating heating cables are available in two cable designs. The BO version of the ELSR-M heating cable has a protective tin-plated copper braid for all low – temperature and medium – temperature applications.
- BO: Protective braid and a thermoplastic outer jacket
- AO: Aluminium foil and a thermoplastic outer jacket
Eltherm ELSR- M BENEFITS
- Four nominal outputs
- UV-resistant
- Moisture proof
- Highly durable
- Efficient heat distribution
- Junction box for pipe mounting
Eltherm ELSR- M heating cables provide temperature maintenance and frost protection to pipework and mechanical services in all industries – typical applications include heating process pipework, instrument lines and storage tanks to maintain viscosity or prevent frost damage as an integral work-task of plant Winterisation.
Eltherm ELSR-M cables utilise cold-applied installation components to complete the trace heating system – no requirement for “hot-working” permit applications in potentially explosive atmospheres, including Zone 1 and Zone 2 hazardous areas.
Trace Heating Cable Selection Table – Eltherm ELSR-M
Contact T&D for technical guidance, heat loss calculations for pipework systems and optimum specification of the correct trace heating cable for your application.
Eltherm ELSR-M Heater Cable | Nominal Output | Cable Dimensions (mm) | Cable Weight Approx (g/m) |
ELSR-M-10-2-AO | 10 w/m at 10ºC | 8.0 x 5.5 | 53 |
ELSR-M-10-2-BO | 10 w/m at 10ºC | 8.5 x 5.8 | 62 |
ELSR-M-15-2-AO | 15 w/m at 10ºC | 8.0 x 5.5 | 53 |
ELSR-M-15-2-BO | 15 w/m at 10ºC | 8.5 x 5.8 | 62 |

Eltherm ELSR-M heating cable power output on insulated metallic pipes in accordance with EN 62395-1
ELSR-M Heating circuit length
Switch on temperature [°C] | Nominal fuse rating [A] | Heating circuit length*1 [m] | |
ELSR-M-10-2 | ELSR-M-15-2 | ||
10 | 10 | 126.0 | 98.0 |
16 | 126.0 | 105.0 | |
20 | 126.0 | 105.0 | |
0 | 10 | 115.0 | 83.0 |
16 | 115.0 | 97.0 | |
20 | 115.0 | 97.0 | |
-10 | 10 | 90.0 | 72.0 |
16 | 144.0 | 91.0 | |
20 | 149.0 | 91.0 | |
– 20 | 10 | 78.0 | 64.0 |
16 | 125.0 | 85.0 | |
20 | 139.0 | 85.0 | |
-40 | 10 | 62.0 | 52.0 |
16 | 99.0 | 77.0 | |
20 | 124.0 | 77.0 |
*1 Heating circuit lengths on the following conditions:
- 230 V nominal voltage
- Delayed action circuit breakers (C-characteristic) with 80 % max. load
- Maximum 10 % line voltage drop on heating cable bus wire
- Power connection to one heater end
- In certain installation situations, the heating circuit length may vary. Please contact T&D
Eltherm video providing a step-by-step termination of ELSR-N heater cable using a EL-ECN termination kit.
Self-Regulating Trace Heating System
A Trace Heater
B Power Connection Kit
C End Termination Kit
D Junction Box
E Pipe Mounting Bracket
F Fasteners and Self-adhesive Tapes, Foils
G Insulation Bushing
H Warning Sign
I Temperature Controller
J Temperature Sensor

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