Plugs & Sockets | Marechal Decontactors for Tunnel Applications
Published 18 May 2023
Industrial | Hazardous Area | Explosive Atmospheres | Plugs & Sockets
Thorne & Derrick International, based in the UK, are Experts in Equipment for Explosive Atmospheres & ATEX Product Innovation – we supply and distribute the MARECHAL ELECTRIC range of low voltage power, control and signal plugs and sockets for heavy industrial and hazardous area applications where ATEX IECEx Certified products are required.
➡️ Thorne & Derrick have been appointed as official distributors and stockists of Marechal plugs and sockets in the UK, as of the 1st March 2023. Our demonstrated knowledge and expertise in the industry enables us to deliver the complete MARECHAL ELECTRIC product offering in both Industrial and Hazardous Areas.
In this series of application Blogs we review the use of Decontactors in Tunnels.
MARECHAL ELECTRIC is now a market leader in the field of electrical connections for tunnels.
Thanks to unique technology and materials specifically developed to suit these harsh environments and to offer quick disconnection of electrical installations, Marechal equipment complies with the industry current standards and is certified by the quality accreditation bodies, thus guaranteeing optimum safety.
MARECHAL ELECTRIC is constantly innovating in order to meet the needs of the various operators and facilitate maintenance work.
Plug applications
MARECHAL ELECTRIC is now a leading company in the electric connection for tunnels.
Based on technology specially intended for such difficult environments and quick light disconnection, Marechal Electric has already equipped more than 700 km of underground roads, railroads and inland waterways.
Always with the same objective: provide user safety, optimise maintenance and make the work of emergency services easier.
- Standard lighting
- Emergency lighting
- Jet fans
- Security recess for fire brigades
SOLUTIONS TO YOUR NEEDS
Reliability & Conformity of Installations
Supply circuits for emergency lighting installed in tunnels must meet the following requirements:
- EN 50362 European standard, French government Directive No. 2000-63 of 25 August 2000 on safety in tunnels and national road network,
- NF C 32-070 French standard,
- Guides CETU defining the fire behaviour of road tunnels.
To meet these requirements, MARECHAL® equipment is among the only one on the market to have been tested and certified by C.S.T.B France (Centre Scientifique et Technique du Bâtiment), and IMQ laboratory in Italy.
Suited Materials for the Users’ Safety
In order to guarantee maximum safety, the materials used in the making of MARECHAL®’s boxes and connectors are corrosion resistant and shockproof (IK09).
In the event of a fire, these materials do not produce any halogen gases or smoke. They are resistant to aggressive environments (humidity, corrosion, pollution) in industrial sectors and road infrastructures.
Optimised Maintenance & Washing
All MARECHAL boxes and connectors are watertight and withstand the use of high-pressure washing during tunnel maintenance.
Ease of Intervention for Emergency Services
The MARECHAL boxes have been specially developed in collaboration with emergency services who specialise in tunnel rescue.
WE ADVISE YOU
EXPRESS® BOX and EXPRESS® FIRE BOX
Supply of standard and emergency lighting.
F400 Electrical Socket-outlets
Suitable for industries and environments where the ambient temperature is high, such as tunnels. The F400 electrical connectors provide excellent electrical continuity. Very robust, they provide the power to smoke accelerators simplifying maintenance while resisting the conditions of standard NF EN 12101-3.
PNC COMPACT CONNECTOR 16 A
The PNC is a compact and rugged connector designed for all types of aggressive environments (humidity, corrosion, pollution) found in many industrial sectors including transport infrastructure. MARECHAL’s technically advanced silver-nickel butt contact system assures high level performance no matter the conditions.
Standards & Certifications
Supply circuits for emergency lighting installed in tunnels must meet the following requirements:
- EN 50362 European standard,
- French government Directive No. 2000-63 of 25 August 2000 on safety in tunnels and national road network,
- NF C 32-070 French standard,
- Guides CETU defining the fire behaviour of road tunnels.
To meet these requirements, MARECHAL® equipment is among the only on the market to have been tested and certified by:
- C.S.T.B France – Centre Scientifique et Technique du Bâtiment
- IMQ laboratory in Italy
Tunnel Application Examples
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Hindhead Tunnel, United Kingdom Supply emergency lighting and jet fan connectors • Saves time during maintenance |
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Tunnels : Bussière (1000m) , Violay (3900m) and Chalosset (700m) Supply of standard and emergency lighting. • Reliability of equipment over time |
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FORLÌ italy Tunnel Supply of standard and emergency lighting • Compact, lightweight, easy to assemble product |
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MARECHAL DISTRIBUTORS & Stockists
Thorne & Derrick, Experts in Equipment for Explosive Atmospheres, are Specialist Distributors of Marechal plugs & sockets in the UK including ATEX and IECEx certified decontactors for LV electrical power distribution.
The range of Marechal plugs and sockets are available in a range of current ratings, switching capabilities, voltage supply and hazardous area certifications (according to ATEX & IECEx) for safe use in potentially explosive atmospheres – this includes Zone 1 & Zone 2 (Gas) and Zone 21 & Zone 22 (Dusts).
Panels | Plugs | Isolators | Enclosures | Lighting | Control Stations | Motor Starters | Heat Trace | Gas Detection | Flame Detection | Process Instrumentation | Process Heating | Fans | Security Locking & Access Control
