Flameproof 40A Plug and Socket – 40A DXN3 Series

Sensor Control LLC is a trusted supplier of flameproof plugs and sockets in the UAE, offering premium-quality electrical connectors for hazardous and industrial environments. Our flagship DXN3 40A series is specifically designed for use in Zone 2 and Zone 22 hazardous areas, ensuring safe and reliable connections in locations exposed to explosive gases and combustible dust.

Engineered in compliance with global standards such as IEC 60079-0, 60079-7, 60079-31, and IEC 61984, the DXN3 series is a top-tier solution for industries operating in oil & gas, marine, chemical, mining, manufacturing, and power utilities.

Product Overview – DXN3 40A Plug and Socket System

The DXN3 series plug and socket system by Marechal Electric is rated for up to 40A and 690V AC/DC, and includes a range of modular components:

• • Socket-Outlets (Female)

  • Inlets (Male)

  • Couplers

  • Wall-Mounted Boxes (30°, 70°)

  • Handles and Sleeves

  • Safety Accessories

This system is ideal for electrical power distribution and control circuits that require flameproof protection in volatile environments.

Key Technical Features

• • Current Rating: 40A

  • Voltage Rating: 690V AC / 690V DC

  • Wiring Capacity:

    • Flexible cables: 2.5 – 6 mm²

    • Stranded cables: 2.5 – 10 mm²

  • Protection Ratings:

    • IP66 / IP67 – for full dust and water protection

    • IK09 – high mechanical impact resistance

  • Temperature Range: -40°C to +60°C

  • Ex Certification:

    • Gas: Ex ec IIC T4/T5 Gc

    • Dust: Ex tc IIIC T115°C/T95°C Dc

The DXN3 series is certified for use in Zone 2 (gas) and Zone 22 (dust), meeting the latest ATEX and IECEx regulations for equipment in hazardous atmospheres.

Advanced Safety & Operational Features

• • Self-Closing & Self-Returning Lids
    Maintain ingress protection and prevent contamination when not in use.

  • Integrated Locking Options
    Safety hasps available for up to 6 padlocks, allowing safe lockout/tagout procedures.

  • Finger Draw Plates & Rope Guides
    Assist with secure connection and disconnection without risk of arc exposure.

  • Auxiliary Contacts (Optional)
    Up to 2 additional contacts for remote control or signaling circuits.

  • Heat Classification
    Supports T4 and T5 classifications based on ambient temperatures, ensuring thermal safety in all operating conditions.

Modular & Customizable Design

Each DXN3 plug or socket must be paired with a compatible box, sleeve, or handle, and multiple configurations are available to suit your specific requirements:

• • Mounting Angles:

    • 30° wall box

    • 70° wall box

    • Straight plug for inline connection

  • Cable Compatibility:
    Cable gland support for diameters from 8 mm to 32 mm

  • Handle Types:

    • Poly handle with Ex poly cable gland

    • Straight handle with metal gland and grounding for earth continuity

  • Material Options:
    GRP (Glass Reinforced Polyester) is standard, with metal version available soon for heavy-duty use.

  • Compatible with DSN Range
    For hybrid installations using both DXN and DSN industrial connectors.

Applications in UAE Industry

The DXN3 40A series flameproof plug and socket system is widely used in:

• • Oil & Gas Refineries and Rigs

  • Petrochemical and Chemical Plants

  • Marine Terminals and Shipyards

  • Mining and Tunneling Projects

  • Waste and Water Treatment Facilities

  • Power Plants and Industrial Manufacturing

Its durability and explosion-proof design make it the preferred choice for operators working in volatile or damp areas requiring robust, reliable power distribution systems.