Junction Boxes ATEX Certified For Trace Heating Systems | Eltherm ELAK-Ex-3
Eltherm ELAK-Ex-3 Junction box
Junction Box for Trace Heating Systems
The Eltherm ELAK-Ex-3.8 is a robust, ATEX Certified junction box designed for secure and reliable use in heat tracing cables and systems operating within hazardous environments. Specifically engineered to connect one or two Pt100 temperature sensors, this junction box is essential for maintaining precise temperature control, frost protection, and energy efficiency across various industrial applications.
In trace heating systems, maintaining consistent and accurate temperature monitoring is crucial. The ELAK-Ex-3 facilitates this by securely housing and connecting Pt100 resistance temperature detectors (RTDs). These sensors provide real-time temperature data to control units, which adjust the heating cables accordingly. This ensures optimal temperature maintenance, preventing freezing or overheating, and is vital in industries where process integrity is paramount.
With over 40 years of industry experience, Thorne & Derrick’s team of hazardous area heating and trace heating specialists deliver tailored solutions backed by expert support. 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.
ELAK-Ex-3 Junction box
Key Features
- Explosion-Proof Design: Certified for use in hazardous (Ex) areas
Flexible Configuration: Suitable for connecting up to two Pt100 sensors - Rugged Construction: Fibreglass-reinforced, antistatic polyester housing
- Environmental Protection: IP66 rated for dust-tight and water-resistant operation
- Wide Temperature Range: Operates from -40°C to +60°C depending on classification
- High Performance: Rated for up to 550 V and 36 A
Technical Specifications | Eltherm ELAK-Ex-3
| Operating Voltage | Max. 550 V |
| Nominal Current | Max. 36 A |
| Ambient Temperature | -40 °C to +60 °C (T6/T5/T4 rated environments) |
| Enclosure Material | Fibreglass-reinforced, antistatic polyester |
| Protection Class | IP66 |
| Dimensions (W x H x D) | 122 x 120 x 90 mm |
| Mounting Hole Pattern | 106 x 82 mm, Ø 6.5 mm |
| Cable Entry Options | 1x M25 blind plug, 1x M25 screw connection, 2x M12 screw connections (1 with plug) |
| Terminal Blocks | 8x WDU 2.5 (feed-through), 3x WPE 2.5 (protective conductor) |
| Connection Cross-Section | Max. 2.5 mm² (solid or stranded without ferrule) |
| Cable Diameter Range | 9 – 17 mm |
| Sensor Compatibility | 1 or 2 Pt100 temperature sensors (2- or 4-wire) |
| Installation Options | Wall mounting or pipe mounting (accessories available) |
1x M25 blind plug
1x screw connection M25 1-fold
1x screw connection M12
1x screw connection M12 with plug
8x feed-through terminal WDU 2.5
3x protective conductor terminal block WPE 2.5
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. As the UK’s official Channel Partner, Thorne & Derrick stock and supply Eltherm’s complete range—including silicone heating mats, trace heating cables, drum heaters, heating jackets, heating mats and heated hoses for hazardous areas (ATEX & IECEx certified).
We provide custom system design, technical support, and energy-efficient solutions tailored to your application needs.
Eltherm ELAK-Ex-3 Junction Box – Data Sheet
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