Junction Boxes ATEX Certified For Heat Trace Systems | Eltherm ELAK-Ex-R

Versatile, Reliable & Certified for Hazardous Area Trace Heating Installations

CategoryHeat Tracing Cables & Systems
  • Quoted to your quantity
  • Documentation on request
  • International delivery

Product Overview

Eltherm ELAK-Ex-R Junction box

Versatile, Reliable & Certified for Hazardous Area Trace Heating Installations

The Eltherm ELAK-Ex-R is an ATEX certified junction box engineered for use in hazardous areas where safety, reliability, and ease of installation are paramount. It plays a crucial role within heat tracing cables and systems by enabling the safe connection of multiple heating cables, temperature sensors, and power supply lines. Its design supports Eltherm heating cables including ELSR, ELP, and ELKM-AG, as well as Pt100 sensors, facilitating a comprehensive and safe heat tracing solution.

We offer complete system design, including heat loss calculations, intelligent control systems, and product specification—ensuring full compliance with safety standards and seamless integration with your operational requirements.

Key Features

  • Explosion Protection: Certified for use in explosive atmospheres (ATEX & IECEx approved)
  • Versatile Connections: Accommodates up to 3 heating cables (ELSR/ELP), 1-2 Pt100 temperature sensors, and a single power supply line
  • Tool-Free Snap Lock: Easy cover closure with a robust snap lock, enhancing installation efficiency
  • Wall Mounting Design: Suitable for fixed installation on walls and structures, with optional brackets for pipe mounting
  • Identification-Ready: Features attachment points for custom identification plates for heating circuit labelling
  • Cable-Friendly Geometry: Internal design minimises cable bending and mechanical stress

How It Works in a Trace Heating System

In a trace heating system, the ELAK-Ex-R acts as the central hub for electrical connections. Heating cables (self-regulating or constant wattage types) are routed through this junction box to connect with power supplies and control sensors. The box facilitates:

  • Power distribution to trace heating circuits
  • Sensor integration for temperature monitoring (using Pt100 sensors)
  • Connection protection against environmental factors and electrical hazards

By ensuring safe, organised, and compliant connections, the ELAK-Ex-R is essential in maintaining the integrity and efficiency of heat tracing in pipelines, tanks, valves, and more.

Available Versions

Note: The ELAK-Ex-R system does not include connection and termination sets. Please order these separately according to the type of heating tape you are using.

Eltherm | Precision Trace Heating Solutions

Delivering High-Performance Trace Heating – Efficient, Reliable, Proven

Eltherm, precision-engineered in Germany, offers world-class trace heating solutions for industrial and hazardous area applications.

We provide custom system design, technical support, and energy-efficient solutions tailored to your application needs.

Technical Specifications

CategoryHeat Tracing Cables & Systems
Operating Voltage (max)550 V
Nominal Current28 A
Ambient Temperature Range-40 °C to +50 °C
Housing MaterialPolyamide (black)
Protection RatingIP65
MountingWall mounting (pipe kits optional)
DimensionsØ 154.5 mm × 125 mm height
WeightApprox. 0.7 kg
CertificationATEX, IECEx
ModelUse CasePart Number
ELAK-Ex-R1Star connection for ELKM-AG0X80071
ELAK-Ex-R22-phase/star connection for ELKM-AG0X80072
ELAK-Ex-R4Connect ELKM-AG to EL-CTB0X80074
ELAK-Ex-R5For 1 ELSR and control unit EL-CT0X80075
ELAK-Ex-R7For 1–3 ELSR or ELP heating cables0X80077
ELAK-Ex-R8Connect 1 or 2 Pt100 sensors0X80078
ELAK-Ex-R8iFor intrinsically safe Pt100 sensor connections [ib]0X80078IB

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