
marechal high current connectors
In heavy industry, power failure isn’t just inconvenient it’s costly, dangerous and disruptive.
When you’re dealing with 150A, 250A, or even 400A at up to 1000V, standard electrical connectors simply aren’t built to cope. Heat, vibration, dust ingress, water exposure and hazardous atmospheres demand specialist engineered solutions.
The Marechal high-current power connectors are designed specifically for extreme industrial conditions, combining safety, durability and operational efficiency. In this guide, we break down the key connector solutions and explain where each one fits.
Why High-Current Connectors Fail in Extreme Conditions
Before selecting a connector, it’s important to understand the most common failure points in high-load environments:
- Overheating under continuous load
- Arcing during connection or disconnection
- Water and dust ingress
- Mechanical damage from impact or vibration
- Unsafe disconnection under load
DS9 – 150A, 1000V Decontactors
The Marechal DS9 is engineered for demanding industrial power distribution up to 150A at 1000V.
The DS9 is a high-current industrial connector designed for safe connection and disconnection under load in demanding environments. It incorporates integrated load-break switching and a robust mechanical design to ensure reliable performance and operator safety.
Common applications include:
- Shipyards
- Steel plants
- Mining operations
- High-demand distribution panels
key Features
- Rated up to 150A
- Voltage up to 1000V
- AC22 / AC23 switching capability
- Integrated load-break switching
- Designed to IEC 60309 performance standards
- Robust industrial construction
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DS2 – 250A, 1000V Heavy-Duty Decontactors

When current demands increase, the Marechal DS2 steps in with enhanced thermal performance and contact stability.
The DS2 is a compact high-current connector designed for reliable power connection and disconnection in demanding industrial environments. It combines a robust mechanical design with safe load-breaking capability, making it suitable where space is limited but performance and safety are essential.
key Features
- Rated up to 150A
- Voltage up to 1000V
- AC22 / AC23 switching capability
- Integrated load-break switching
- Designed to IEC 60309 performance standards
- Robust industrial construction
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DS4 – 400A, 1000V High-Current Connectors

For extreme power requirements, the Marechal DS4 delivers serious current-handling capability.
The DS4 is a heavy-duty high-current connector rated up to 400A at 1000V, designed for harsh industrial and outdoor environments where safe load-breaking, mechanical durability, and high ingress protection are essential.
Core Features
- Rated up to 400A
- Voltage up to 1000V
- IP54 / IP66 / IP67 protection options
- High mechanical durability
- Safe load-breaking functionality
Built for: ports, container terminals, infrastructure projects, and high-load mobile or fixed equipment.
P66 – ATEX Hazardous Area Connectors

Extreme conditions don’t always mean high current — sometimes they mean explosive atmospheres.
The Marechal P66 connector is purpose-built for hazardous locations.
- Zone 1 and Zone 2 environments
- ATEX certified
- Heavy-duty industrial construction
- Secure, safe power connection
Ideal for: oil & gas, petrochemical plants, and hazardous process environments.
Core Features
- Rated up to 400A
- Voltage up to 1000V
- IP54 / IP66 / IP67 protection options
- High mechanical durability
- Safe load-breaking functionality
CS1000 – 400A, 1000V Single-Pole Power Connectors

For specialised high-power distribution systems, the Marechal CS1000 offers maximum flexibility.
- Up to 400A and 1000V
- IP66 / IP67 rated
- IK08 mechanical impact resistance
- Single-pole configuration for modular layouts
Commonly used in: generators, renewable energy installations, substations, and modular power systems.
Core Features
- Rated up to 400A
- Voltage up to 1000V
- IP54 / IP66 / IP67 protection options
- High mechanical durability
- Safe load-breaking functionality
Industries That Rely on High-Current Solutions
- Oil & Gas
- Ports & Shore Power
- Mining
- Steel Production
- Rail Infrastructure
- Heavy Manufacturing
- Power Generation
Choosing the Right High-Current Connector
Selecting the correct connector depends on:
- Required amperage (150A / 250A / 400A)
- Voltage level (up to 1000V)
- Hazardous area classification
- Environmental exposure and IP rating
- Fixed or mobile application
From DS9 through to CS1000, Marechal offers scalable solutions designed for environments where failure is not an option.
Marechal electric
Marechal plugs and sockets (decontactors) provide low voltage power supply for high current, high temperature and hazardous area (Zone 1 & Zone 2) ATEX power distribution applications – this includes power plugs for electric generator sets, motors, machines, distribution boxes, pumps and electric cabinets.
Thorne & Derrick, Experts in Equipment for Explosive Atmospheres, are Specialist Distributors of Marechal plugs and sockets in the UK including ATEX and IECEx certified decontactors for LV electrical power distribution.

The Hidden Dangers of Faulty “Explosion-Proof” Lighting
The EU Safety Gate issued a recall of the Unicorn EX200A LED flood lamp, a product sold online, including on platforms like Alibaba. On the surface, this large (30 × 40 cm) lamp promised reliable illumination in potentially explosive atmospheres. But beneath the glossy specifications lay a dangerous design flaw that could have deadly consequences.
Official Alert Reference: EU Safety Gate – Unicorn LED Flood Lamp Recall
key details
| Category |
Details |
Compliance Status |
Risk Assessment |
| Brand/Model |
Unicorn EX200A |
Non-Compliant (Fails ATEX & EN 60079-1) |
High Hazard |
| Description |
LED flood lamp (~30 × 40 cm), sold online via Alibaba |
Marketed as explosion-proof |
Potential ignition in explosive zone 1 |
| Technical Specifications |
Intended for use in potentially explosive atmospheres |
Junction box/LED part & cable entry plug not secured against ignition |
No effective explosion protection |
| Sales Channels |
Online sales, in particular via Alibaba |
No verified authorised distributors |
High fraud probability |
| Country of Origin |
People’s Republic of China |
No valid EU compliance |
Uncontrolled manufacturing |
| Recall Information |
Recall by manufacturer (29/09/2025) |
Active in Germany |
Product may still be circulating |
How Design Flaws Put Workers at Risk
The issue wasn’t with the brightness of the lamp—it was with its construction. Testing revealed that:
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Housing connections were insecure – The junction between the lamp’s housing and LED parts wasn’t properly sealed, allowing internal ignition to spread.
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Cable entry plugs were poorly secured – This flaw made it possible for sparks or flames to ignite surrounding explosive gases.
In simple terms: in environments where flammable vapours exist, this lamp could become a trigger for disaster, leading to burns, fires, or even explosions.

Why Compliance Matters in Hazardous Zones
The Unicorn EX200A did not comply with:
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The EU ATEX Directive, which governs safety standards for equipment used in explosive atmospheres.
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The European Standard EN 60079-1, which sets requirements for flameproof enclosures.
By failing these benchmarks, the lamp was unfit for professional use in hazardous zones.
A Dangerous Marketplace
One of the most concerning aspects is that this product was available online to a global audience. Many buyers may not have the resources or expertise to verify compliance with strict EU safety standards. What looks like a bargain piece of equipment can, in reality, be a future fatality.
Checking certifications before purchase
Authorities have ordered the recall of all Unicorn EX200A units from end users. The recall serves as a reminder that even in regulated markets, unsafe products slip through the cracks.
If you or your organisation has purchased this model, stop using it immediately. Contact the seller or distributor for instructions on how to return the product.
key takeaways from this Recall
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Verify certifications – Always ensure that explosion-proof equipment is properly certified for your region. Look for authentic ATEX or IECEx markings.
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Buy from trusted suppliers – Avoid generic or low-cost listings on online marketplaces for critical safety equipment.
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Stay updated on recalls – Check the EU Safety Gate alerts or similar regulatory databases regularly.
⚠️ The takeaway: In high-risk environments, there’s no room for compromise. What may appear to be a cost-saving purchase could end up costing much more in safety, compliance, and most importantly human lives.
the EU Safety Gate
The EU Safety Gate is the European Union’s rapid alert system for dangerous non-food products. It allows national authorities across Europe to quickly share information about hazardous items found on the market, from electrical equipment to toys and personal protective gear. By coordinating recalls, bans, and other corrective actions, the Safety Gate helps prevent unsafe products from reaching consumers and professionals, while ensuring that risks are communicated swiftly across all EU member states.

Thorne & Derrick: Your Trusted ATEX Partner
Thorne & Derrick International are UK based and are the leading specialist distributors of LV, MV and HV cable accessories and tooling from 600V to 132kV complemented by an extensive range of hazardous area certified electrical equipment (ATEX and IECEx) to provide compliant, safe and optimised power, heating and lighting. Thorne and Derrick International supports critical infrastructure projects across power, utilities, rail, construction, oil & gas, marine, and process industries.
The Bottom Line:

Celebrating Chloe’s Achievement: Passing Her Level 4 Sales Executive Apprenticeship
At Thorne & Derrick International, we are proud to champion talent development and recognise the dedication it takes to achieve professional growth. Today, we are delighted to announce and celebrate a significant milestone—Chloe has successfully completed her Level 4 Sales Executive Apprenticeship.
This achievement not only marks a personal triumph for Chloe but also reflects our long-term commitment to investing in the future workforce through apprenticeship programmes that foster meaningful career progression.
A Testament to Dedication and Development
Chloe’s apprenticeship journey exemplifies the transformative potential of structured learning in the workplace. Throughout her programme, she demonstrated resilience, drive, and an unwavering commitment to her professional development.
“Special thanks go to Deborah from Gateshead Learning & Skills for her invaluable support throughout my apprenticeship journey.”
Key Highlights from Chloe’s Apprenticeship Journey:
Throughout her apprenticeship, Chloe demonstrated growth in several core areas essential to a modern sales role:
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Strategic Selling – Learned to plan and execute targeted sales strategies.
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CRM Proficiency – Used digital tools to manage leads and improve client communication.
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Negotiation Skills – Strengthened her ability to close deals and influence outcomes.
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Customer Focus – Built strong relationships by delivering tailored, results-driven solutions.

Empowering Future Leaders in Sales
Chloe’s success is not only a personal achievement but also a reflection of our belief in developing sales professionals who are equipped to thrive in competitive markets. Armed with a nationally recognised Level 4 qualification, Chloe is well-positioned to take on expanded responsibilities and continue delivering value across our operations.
We extend our heartfelt congratulations to Chloe—your progression is a credit to your dedication, and an inspiration to those following in your footsteps.

About Thorne and Derrick International
Thorne & Derrick International are UK based and are the leading specialist distributors of LV, MV and HV cable accessories and tooling from 600V to 132kV complemented by an extensive range of hazardous area certified electrical equipment (ATEX and IECEx) to provide compliant, safe and optimised power, heating and lighting. Thorne and Derrick International supports critical infrastructure projects across power, utilities, rail, construction, oil & gas, marine, and process industries. With over 40 years of industry expertise, Thorne & Derrick International delivers trusted products, technical support, and tailored solutions to meet the evolving needs of the energy and industrial process markets. Thorne & Derrick is committed to building future-ready capabilities through apprenticeship programmes that nurture talent, drive performance, and close the skills gap in our industry.

Pictured left to right : George Mills (Senior Sales VEGA), Aiden Dawson (Marketing T&D), Charlie Baines (Sales T&D), Ella Bradley (Sales T&D), Noah Lowden (Sales T&D), Regan Redpath (Sales T&D)
VEGA Instrumentation Training Elevates Expertise at Thorne & Derrick
Thorne & Derrick recently welcomed George Mills (Senior Sales Engineer) from VEGA, the global leader in measurement instrumentation technology, to our Chester-le-Street branch for an exclusive product training session. The session provided our sales and technical teams with invaluable insights into their innovative product range and its applications across key industries.
VEGA pressure measurement instruments provide accurate data for measuring level, volume, density and flow measurement of gas, vapour and liquids. VEGA pressure transmitters ensure reliable and advanced accuracy readings for the process and hazardous area industries utilising their CERTEC ceramic-capacitive measuring cells and METEC measuring cells.

Comprehensive Product Knowledge Transfer
The training session delivered in-depth technical familiarisation with the range, including
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Advanced-level measurement instruments
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Cutting-edge pressure sensors and transmitters
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Radar measurement technology for challenging environments
Our teams gained hands-on experience with the equipment, reinforcing their ability to recommend optimal solutions for customer applications in sectors including oil & gas, chemical processing, and water treatment.
Strengthening Customer Support Capabilities
The session particularly focused on:
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Key technical features and benefits of VEGA instrumentation
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Application-specific selection criteria
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Installation best practices
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Maintenance and troubleshooting guidance
This knowledge enhancement ensures our team can provide even more comprehensive support and advice to customers specifying measurement and control solutions.


VEGA are the world leader in process instrumentation sensors specialising in pressure measurement and level measurement (switching) technology suitable for many worldwide applications – including hazardous area industries requiring Zone 1 & Zone 1 ATEX & IECEx certified level and pressure sensors.
For over 50 years, VEGA have been providing process and instrumentation measurement solutions for industries including chemical, pharmaceutical, food and beverage, paper production, mining, water, power and oil/gas.
VEGA pressure measurement instruments provide accurate data for measuring level, volume, density and flow measurement of gas, vapour and liquids. VEGA pressure transmitters ensure reliable and advanced accuracy readings for the process and hazardous area industries utilising their CERTEC ceramic-capacitive measuring cells and METEC measuring cells.

A Revolutionary Lighting Solution for Hazardous Environments
SPARTAN Recess is a next-generation recessed LED luminaire designed specifically by Raytec for hazardous industrial areas, including oil & gas, chemical processing, pharmaceuticals, and offshore facilities. Engineered to meet ATEX, IECEx, and UL/cUL certifications, this explosion-proof lighting solution delivers superior illumination, energy efficiency, and unmatched durability in the most demanding environments.
Unlike traditional recessed lighting, the SPARTAN Recess combines cutting-edge LED technology with a lightweight, modular design, making it easier to install, maintain, and adapt to any application.
Features & Benefits
Modular & Customisable Design for Any Application
The SPARTAN Recess is built with unmatched flexibility, offering
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Five standard sizes (ranging from compact to high-output variants)
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Three installation methods (exposed ‘T’ bar, concealed ‘T’ bar, solid/plasterboard, and offshore ceilings)
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Optional accessories (including emergency battery packs, different diffusers, and mounting kits)
This modular approach ensures seamless integration into new and retrofit installations, providing the perfect fit for any hazardous area.
Ultra-Lightweight Construction for Easier Handling
Traditional recessed luminaires are often heavy, increasing installation time and ceiling load. The SPARTAN Recess is 50% lighter than conventional alternatives, thanks to:
This makes it safer and faster to install, particularly in offshore and high-ceiling environments.
Simplified Installation & Maintenance

Downtime is costly in hazardous areas—SPARTAN Recess minimises disruption with:
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Tool-free access (servicing from above or below the ceiling)
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Low-profile design (fits into shallow ceiling voids without disassembly)
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Quick-release mechanisms (for fast lamp or driver replacement)
These features ensure reduced maintenance costs and longer operational lifespans.
OptimiSed Light Distribution with Adjustable Beam Angles
Every industrial space has unique lighting requirements. The SPARTAN Recess provides:
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Multiple beam angle options (wide, medium, and narrow for task or area lighting)
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Diffused lenses (eliminating glare and hotspots for uniform illumination)
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Free lighting design service (Raytec experts can tailor beam patterns for your facility)
Smart & Future-Proof Lighting Control
The SPARTAN Recess is DALI 2.0 dimmable as standard, enabling:
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Precise brightness control (for energy savings and adaptive lighting)
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Integration with BMS (Building Management Systems)
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Emergency lighting options (battery backup versions available)
Certified for Safety & Performance
The SPARTAN Recess is independently certified for use in hazardous areas, including:
- ATEX & IECEx (Zone 1, 2, 21, 22)
- UL/cUL (Class I Div 2, Class II Div 2)
- IP66 & IK10 rated (dustproof, waterproof, and impact-resistant)
This ensures full compliance with global safety standards, making it a trusted choice for high-risk industries.
Ideal Applications
The SPARTAN Recess is perfect for:
✅ Oil & Gas Platforms (rigs, refineries, processing plants)
✅ Chemical & Pharmaceutical Facilities (labs, storage areas, production zones)
✅ Marine & Offshore Installations (ships, drilling platforms, port facilities)
✅ Food & Beverage Processing (ATEX-rated washdown areas)
✅ Mining & Heavy Industry (dust-prone and explosive atmospheres)
Why Choose Raytec?

All Raytec lighting is designed and manufactured in the UK and available with a 5 year warranty. Thorne & Derrick together with Raytec offer unrivalled product support helping the hazardous area industry to improve safety, reliability & operational performance.
Thorne & Derrick hold extensive UK stocks ensuring fast delivery worldwide and offer free, fast and expert specification advice from our skilled team with over 35 years’ experience.
➡ Using latest software our FREE Lighting Design Service supports the upgrade from fluorescent to LED lighting focussed on maximised light output, optimised energy consumption with reliable and safe certification for explosion protection concepts in Zone 1 and Zone 2 hazardous area zones and workplaces.
Upgrade Your Industrial & Hazardous Area Lighting Solutions:
Experience the benefits of SPARTAN Recess luminaires for yourself. Upgrade your lighting solutions with this cutting-edge technology and enjoy:
- Improved performance and efficiency
- Enhanced flexibility and customisation options
- Increased ease of use and maintenance
- Reduced costs and downtime
Join the next generation of recessed hazardous area lighting with SPARTAN Recess. Contact Thorne & Derrick today to learn more about how this innovative solution can revolutionise your lighting needs.

Using the latest software, we can provide a FREE LIGHTING DESIGN SERVICE for the specification and supply of ATEX & IECEx light fittings to provide safe and reliable lighting in hazardous areas and industrial locations
