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| Up to 40 % of PUE can be consumed in a data centre for temperature cooling purposes. | Energy losses in electrical connections can lead to significant overconsumption and heat generation. |
From 600V to 66,000V: Addressing Data Centre Energy Challenges with High-Performance MARECHAL Plugs & Sockets
Marechal Data Centre
High-Performance Electrical Connection Solutions
From 600V to 66,000V
Thorne & Derrick are Specialist Distributors of Industrial & Hazardous Area (ATEX & IECEx) Equipment to provide temporary or permanent Power to your projects from 600V to 66kV – this includes the most comprehensive range of LV HV Cables, Accessories Jointing, Substation & Electrical Eqpt.
With over 75 years of expertise, Marechal Electric is an undisputed leader in electrical connections from 5A to 1250A.
Together Marechal Electric & Thorne & Derrick can provide plugs, sockets and connectors electrical for critical environments including, harsh environments, hazardous areas and high voltage cable connections.
Choosing Marechal solutions for your electrical installations not only guarantees electrical safety and reliability but also represents a smart investment in:
- Maximising energy efficiency: up to 30 times more energy-efficient than traditional systems
- Lowering maintenance and operational costs across the entire system
- Ensuring global compliance with both IEC and UL Standards
MARECHAL DATA CENTRE SOLUTIONS
FULL COMPATIBILITY WITH YOUR CRITICAL EQUIPMENT
Marechal Electric powers and secures:
Primary & Backup Power Supply
- Generators to ensure continuous energy supply
- Uninterruptible power supplies (UPS) to protect against outages and voltage fluctuations
Power Distribution & Management
- Distribution cabinets
- Transformers
- Power management systems
Cooling & Thermal Regulation
- Air conditioning and ventilation systems
Advanced Monitoring & Supervision
- Power distribution units (PDU)
These power connection solutions ensure that your electrical infrastructure is safer, more efficient, and more resilient, providing continuous operational stability.
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Marechal Plug, Sockets & Connectors
EVO40
SEPARABLE SWITCH-DISCONNECTOR
Marechal EVO40 is designed for load breaking and circuit isolation in LV electrical systems, fully compliant with the IEC/EN 60947-3 standard – the durable mechanism ensures reliable circuit opening and separation, even in cases of overcurrent or overvoltage (AC-23/AC-3).
LOCAL LOAD BREAKING SOLUTIONS
Marechal Electric solutions enable connection and disconnection under load up to 250A without requiring electrically-qualified personnel. Eliminates the need for a 30mA residual current circuit breaker (RCCB), preventing inconvenient tripping guarantees a visible and fully apparent disconnection, effectively separating the load and supply parts of the device.
Ensuring continuity of critical services under any circumstances.
DECONTACTOR™
SOCKET WITH INTEGRATED SWITCH
When some maintenance and repairs are needed, Decontactor provides a unique solution for safe and easy disconnection of all types of equipment:
- can disconnect under load up to 250 A (AC-22/ AC-23) in compliance with IEC/EN 60947-3 standard, with no need for a qualified electrician,
- safety shutter (IP4X) prevents access to live parts
The integrated auxiliary contacts enable users to easily control equipment (sensors), and monitor various parameters (temperature, humidity…) or trigger alarms.
Decontactor incorporates up to 6 auxiliary contacts – the auxiliary contacts are separated from the power contacts.
Optimised thermal dissipation compared to other manufacturers:
| Technical Features | DECONTACTOR™ | Manufacturer A | Manufacturer B |
| Auxiliary contacts | Up to 6 | 2 | 0 |
| Thermal resistance | 105 ° C | 90 ° C | 85 ° C |
| Lifespan (cycles) | > 10,000 | 5,000 | 7,000 |
HIGH-CURRENT CONNECTORS
For installations requiring currents above 250 A, Marechal Electric offers single pole connectors designed for high-current applications up to 1,250A.
CS1000 (500 A), SP (800 A) and DSP1250 (1,250 A) devices provide great flexibility for generator connections up to 800 kW (AC)/1,200 kW (DC) compared to direct busbar connections.
Additional benefits include:
- locking system
- pilot contacts (SP device)
- cable sections from 50sqmm to 630sqmm
Electrical Connections For Greater PUE & Heat Mitigation
Marechal plugs and sockets are designed to enhance the efficiency of electrical connections, particularly in environments like data centres or industrial applications, where high performance and effective heat management are crucial. Optimising Power Usage Effectiveness (PUE) helps improve the overall performance of your infrastructure.
Marechal understands that energy consumption is also impacted by the choice of electrical connectors, whether for racks, fans, generators, or pumps. Their technology prevents the overheating of electrical components. The solutions offered utilise innovative technology to minimise losses due to the Joule effect and generate significant energy saving.
| Material | Contact resistance | |
| New | Oxidised | |
| Brass | 370 μΩ | 1,400 μΩ |
| Copper | 29 μΩ | 400 μΩ |
| Silver-nickel | 23 μΩ | 60 μΩ |
Oxidised silver-nickel alloy still maintains the lowest contact resistance.
Spring-assisted terminals designed to compensate for copper creep deformation, our terminals eliminate the need for regular tightening maintenance and prevent overheating.
- Split terminal (allows constant force)
- Conductor
- Elliptical deforming ring (prevents loosening)
Nominal Current Rating:
Thanks to their low resistance, Marechal plugs and sockets have a long temperature rise time constant (t) meaning they gradually reach their equilibrium temperature and can absorb temporary overloads without excessive heating.
Power Usage Effectiveness
Marechal Electric optimises Power Usage Effectiveness (PUE) helps improve the overall performance of your infrastructure.
LESS HEATING = LESS COOLING the dual benefit of DECONTACTOR
Its low-Joule-effect reduces energy consumption and lower your PUE
Below is a comparison between the DECONTACTOR™ (IEC/EN 60309-1 standard) and the conventional CEE pin & sleeve (IEC/EN 60309-2 standard) highlighting their differences in design and functionality.
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MARECHAL® IS 30 TIMES MORE EFFICIENT
With 24/7 operation, 365 days a year, this example demonstrates the energy savings and financial advantages achieved using Marechal technology for 500 units of 32 A/3P+N+E sockets, assuming an electricity cost of €0.25/ kWh:
The virtuous cycle of high-quality electrical components combined with our technology reduces significantly your power consumption.
Simplified Maintenance & Management
These solutions provide streamlined management and simplified maintenance to ensure high-level performance.
Thanks to distinct connector colours (e.g., black for main circuits and blue for backup circuits), Marechal plugs & sockets enable quick visual identification, making servicing and maintenance easier and more efficient.
- Reduces the number of socket-outlets installed
- Flexibility of the installation
- Fast reconfiguration
- Easier and more efficient servicing and maintenance
- Reduced intervention costs
ADDITIONAL SAVING: DUAL VOLTAGE
Our unique fool-proofing design also offers “dual voltage” socket-outlets. A single 3P+N+E socket outlet, offering 220/250V AC and 380/440 V AC at 50 Hz, can safely supply 4 plugs with the same coding but different polarities and/or voltages:
- 3P+N+E plug at 400 V AC, 50 Hz
- 3P+E plug at 400 V AC, 50 Hz
- 2P+E plug at 400 V AC, 50 Hz
- 1P+N+E plug at 230 V AC, 50 Hz
CONNECTING INDUSTRY
Since 1985, we have supplied LV HV Electrical Products to Power, Connect & Energise all sectors: Utility, Renewable (Solar & Wind), Rail, Datacentre, BESS, Oil & Gas, Petrochemical & Explosive Atmosphere Industries.
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