Marechal DS4 | Product Innovation in Electrical Distribution & Safety
Published 04 Mar 2021
Marechal DS4
Recently Marechal Electric have introduced technical improvements to the metal socket casing of their DS4 400A plugs & sockets. Electrical plugs and socket-outlets in the Marechal DECONTACTOR™ range are sized from 30A to 400A. The DS range with integrated switch is the widest and most comprehensive DECONTACTOR™ range.
Both sockets and inlets are available in metal version from 90A rating. It offers numerous mounting options (boxes, handles and sleeves). Marechal DS plugs & sockets have an incorporated breaking capacity of AC-22 / AC-23 and have either an impact resistant GRP or metal casing.
âž¡ Marechal DS4 plugs & sockets are ideally suited for use ports, marinas, shipyards and on board vessels.
Main Changes to the Marechal DS4
- Design changes include new colours, integrated closing mechanism of the socket, increased robustness and easier connection
- Casing wall thickness increased for improved impact resistance (IK10)
- Addition of a silicon gasket giving IP66/67 watertightness with closed lid or with inlet/socket connected. An IP66/67 compatibility kit is available as an accessory for use with older DS4 inlets.
- The old style “operating lever” remains available and is compatible with the new DS4 casing after removal of the new integrated drawbar system
Marechal DS4 | Product Innovation in Electrical Distribution & Safety
Marechal DS4
Technical Specification
| Rated Current (with wiring according to standard) | 400A |
| Maximum Voltage | 1000V |
| Protection | IP54 (IP66/IP67 optional) |
| Shock Resistance | IK10 |
| Ambient Temperature | -40ºC to +60ºC |
| Flexible Wiring (Min-Max) | 95mm² – 150mm² |
| Stranded Wiring (Min-Max) | 95mm² – 185mm² |
| Pilots contacts for electrical interlock | 2 |
| Keying Positions | 12 |
Marechal DS Decontactor
Features
Butt Contact on a Silver-Nickel Tip
The Marechal DECONTACTOR™ and connectors are all fitted with butt contacts with silver-nickel tips. They provide exceptional connection quality by eliminating the damage due to electric arcs and to wear seen with pin and sleeve sockets. The silver is an excellent conductor of current even when oxidised. Conductivity is optimal even in the presence of vibration and temperature variation thanks to the pressure of the springs.
Crimped Braids
The Marechal contact uses a crimped braid with a spring which provides contact performance and tolerances superior to pin and sleeve contacts. The flexibility of the braid and the spring allows the base contact tip to always be perfectly aligned with the plug contact tip. These contacts, which are silver and anti-corrosion treated, offer very good corrosion resistance.
Elastic Lock Terminals
Marechal contacts are fitted with “elastic lock” connection terminals.
The wire clamp is split and surrounded by a rubber ring. This method allows the tightening force on the wire to be constant. Hence despite the creep of the copper or aluminium, the variations of temperature and vibration, the conductor wire is perfectly connected to the contact terminal.
Safety Shutter
DECONTACTOR™ bases are fitted with an interlocked safety shutter which prevents access to live contacts. This shutter only unlocks at the time of connection of the plug into its base. The Marechal range connectors and DECONTACTORs™ have casings made from fibre glass- or metal-reinforced GRP, depending on the models. This choice of material contributes to the excellent mechanical performance and longevity of the socket.
Marechal DS Decontactor
Benefits
These technical choices provide Marechal connectors and DECONTACTORs™ with unparalleled levels of performance:
- Absolute safety, even after thousands of connections/disconnections,
- The ability to withstand repeated overloads, particularly on power supplies to motors with frequent starting,
- Perfect operation in the presence of vibration and variations in temperatures,
- Resistance to shocks, falls and climatic variations,
- A perfect resistance to corrosion and the most severe chemical agents.
The quality of the material, the design, the assembly and the inspection of each component are at the core of Marechal’s know-how and technology.
Each component provides a precise function that optimizes the performance, safety and sustainability of our sockets and installations.
Certifications & Compliances
The Marechal DS DECONTACTOR™ range complies with:
• IEC/EN 60309-1 & IEC/EN 60309-4 European and International standards (plugs and socket-outlets for industrial purposes),
• The European Low Voltage Directive 2014/35/EU, conformity with the CE marking,
• The European ‘Machine Directive’ 2006/42/CE regarding equipment isolation,
• The French NF C 15-100 standard,
• The French decree dated 20 December 2011 pertaining to the wiring and operating conditions of movable electrical apparatuses,
• The decrees relating to workers’ protection in Belgium, Spain and Italy,
• The switch utilization categories AC-22 A and AC-23 A described in IEC/EN 60947-3.
• The UL 1682 and 2682 (USA) and CSA C22.2 N° 182.1-07 (Canada) standards for plugs and socket-outlets.
Also certified by UL, TR CU (GOST), CCC and cCSAus (French, American, German, Russian, Chinese and Canadian inspection laboratories).
Marechal DS Range – Bursting with features to ensure user safety
Power Distribution & Control In Hazardous Areas
T&D also distribute hazardous area isolators, control panels and distribution boards, electrical enclosures and motor starters certified according to ATEX for use in Zone 1 & Zone 2 (gas/vapour) explosive atmospheres.
