Marechal SPeX Hazardous Area Connectors ATEX (Zone 1 & Zone 2 Hazardous Area)

Marechal SPeX Single Pole ATEX Connector | Zone 1/2, 680A

Product Range: Marechal SPeX (Single Pole) ATEX Plugs & Sockets

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Marechal SPeX plugs and sockets are compact, watertight hazardous area connectors with current ratings up to 680A, 1000V AC / 1500V DC and ATEX certification for Zone 1 & Zone 2 (and Zone 21 & 22 for dust). SPeX connectors are automatically IP65/IP66 when connected and include a reliable mechanical and electrical interlocking system. SPeX belongs to the Marechal Plugs, Sockets & Connectors range, designed for safe and reliable power connections in demanding industrial environments.

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Product Overview
Technical Specifications
ATEX Classification
Key Benefits
Install & Operation
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Product Overview

The Marechal SPeX is part of the Marechal Hazardous Area Plug range, designed for demanding environments where robust, watertight connections and controlled operation are required. SPeX is ATEX certified for Zone 1 & Zone 2 and supports high current single pole power distribution up to 680A (depending on category and cable).

SPeX connectors are automatically IP65/IP66 when connected, with a reliable interlocking system that supports safe procedures for connection and disconnection. Selection should be based on ambient temperature, cable cross section and the required ATEX temperature class.

Marechal SPeX Hazardous Area Connector in an industrial setting used for power generation

Contact our trusted experts – confirm the correct SPeX selection for your project (supply type AC/DC, current, cable size and ambient temperature range).
UK & export projects supported with fast worldwide delivery.

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Technical Specifications

Marechal SPeX ATEX Plugs – Technical Specification

Specification	SPeX
Rated Current (with wiring according to standard)	According to category and cable
Maximum Voltage AC	1,000V
Maximum Voltage DC	1,500V
Short-Circuit Current (Icc)	20kA during 250ms
IP Protection (Lid Closed)	IP65 / IP66
IP Protection (Connected Plug)	IP65 / IP66
Shock Resistance	IK08
Ambient Temperature	See ATEX classification table
Wiring (Min–Max)	See ATEX classification table
Keying Positions	Mechanical (5) and visual
Protection Mode	e
ATEX Zones	1 & 2 (Gas), 21 & 22 (Dust)
Number of Operations	2,000
Pre-wired Pilot Circuit	6A / 250V

For correct selection, base current rating on the ATEX classification table (ambient temperature and cable cross section).

ATEX Classification (Cable Cross Section vs Ambient Temperature)

Marechal SPeX Plugs – ATEX Classification

Cable Cross Section	-20°C ≤ Ta ≤ +40°C (G/D) T5 / T56°C	-20°C ≤ Ta ≤ +40°C (G/D) T6 / T56°C	-20°C ≤ Ta ≤ +60°C (G/D) T5 / T76°C
70mm²	290A	235A	235A
95mm²	415A	335A	335A
120mm²	456A	376A	376A
150mm²	493A	415A	415A
185mm²	530A	450A	450A
240mm²	570A	497A	497A
300mm²	620A	540A	540A
400mm²	680A	600A	600A

Share your cable cross section and ambient temperature range and we’ll confirm the correct SPeX configuration and ATEX classification for your project.

Key Benefits

✔ Current ratings up to 680A (dependent on category and cable)

✔ High voltage capability: 1000V AC / 1500V DC

✔ ATEX certified for Zone 1 & 2 (Gas) and Zone 21 & 22 (Dust)

✔ Automatically IP65/IP66 when connected

✔ Robust construction with IK08 shock resistance

✔ Mechanical keying (5) + visual identification to support correct matching

✔ Pre-wired pilot circuit 6A / 250V to support interlocking

✔ Designed to support strict connection/disconnection procedures in hazardous areas

Install & Operation Guidelines

Key safety notes: Electrical interlocking with a contactor is compulsory. The pilot circuit supply must be protected against transient over-voltages of 4kV using an appropriate isolating device.

View assembly, wiring & operation guidance

Assembly: Insert cable through the cable gland and handle or through the inclined sleeve.

Wiring of the pilot wires: Use flexible conductors 0.5–1.0mm². Connect to microswitch wires using the insulated crimp lugs supplied and an appropriate crimping tool.

Wiring of the main conductor: Respect the ATEX (T5) classification. Strip the conductor by 46mm. Use the correct crimp die (e.g., NFC 20-130 / VDE 0220) — hexagonal crimping is recommended. Apply torque approx. 70 N·m. Maintain the rear of the contact with a 24mm key while tightening.

Connector assembly: Assemble handles using supplied gaskets/screws and tighten the cable gland with an appropriate tool. To achieve IP65/IP66 for an interlocked connector, use a cable incorporating the two pilot wires required for the interlock (or an ATEX cable gland solution allowing the main cable plus the two pilot cables).

Metal inclined sleeve: Respect air/creepage distances for main and auxiliary circuits. Connect the metal inclined sleeve to earth.

Watertightness & identification: Do not forget the colour-coded ring at the rear of the inlet/socket-outlet. Ensure caps are reassembled after use. For IP65/IP66, assemble the socket-outlet/connector cap with its slot facing the protruding finger.

Operation (summary):

Insert plug straight into socket-outlet until a “click” is heard. Avoid cable strain on the socket-outlet.
Pull on the plug to confirm it is properly latched.
To close the pilot circuit, turn the ring towards “1” up to the stop and check continuity of the pilot.
Do not attempt to turn the ring towards “1” when no plug is engaged.
To open the pilot circuit and unlock, turn the ring back to “0”, press the button to release the plug, then refit caps on both sides.