Marechal SPeX Hazardous Area Connectors ATEX (Zone 1 & Zone 2 Hazardous Area)
Marechal SPeX plugs and sockets are compact and watertight with current ratings up to 680A, 1,000V AC / 1,500V DC and are ATEX certified for Zone 1 & Zone 2 hazardous areas.
SPeX plugs and sockets are automatically IP65/IP66 when connected and has a reliable mechanical and electrical interlocking system..
Marechal SPex ATEX Plugs – Technical Specification
|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 LCC||20kA during 250ms|
|IP Protection Lid Closed||IP65/IP66|
|IP Protection Connected Plug||IP65/IP66|
|Ambient Temperature||See table|
|Wiring (Min-Max)||See table|
|Keying Positions||Mechanical  and visual|
|ATEX Zones||1 & 2, 21 & 22|
|Number of Operations||2,000|
|Pre-wired Pilot Circuit||6A / 250V|
MARECHAL SPEX PLUGS – ATEX ClassificatiON
|Cable Cross Section||Ambient Temperature|
|-20ºC ≤ Ta ≤ +40ºC G D T5 / T56ºC||20ºC ≤ Ta ≤ +40ºC G D T6 / T56ºC||20ºC ≤ Ta ≤ +60ºC G D T5 / T76ºC|
Install & Operation Guidelines
The supply of the pilot circuit must be protected against transient over-voltages of 4kV by means of an appropriate isolating device.
Electrical interlocking with a contactor is compulsory.
Insert cable through the cable gland and the handle or through the inclined sleeve.
Wiring Of The Pilot Wires
Use flexible conductors with a cross-sectional area between 0.5 and 1 mm² .
These conductors must be connected to the wires of the microswitch by means of the isolated crimping lugs supplied. Use an appropriate crimping tool.
Wiring Of The Main Conductor
Respect the ATEX (T5) classification. The cross-section must be at least that defined in the certificate or the CE Declaration of Conformity, depending on the maximum current.
Strip the conductor by 46mm. Crimp the threaded lug or the ferrule with the appropriate die (NFC 20-130 or VDE 0220 or another). Hexagonal crimping is recommended.
Tighten directly the threaded lug with a 24mm key or tighten the ferrule with a screw and a washer with a 19mm key. Apply a torque ca. 70 N.m.
While tightening the ferrule, maintain the rear of the contact with a 24mm key.
Assembly Of The Connector
Assemble the handles on the body of the products with the supplied gaskets and screws and tighten the cable gland with an appropriate tool. To achieve the IP65/IP66 of an interlocked connector, use a cable that incorporates the two pilot wires that are required for the interlock, or use an ATEX cable gland bushing that allows the passage of the main cable and the two pilot cables.
The silicone ring must be assembled on the receptacle ring.
Assembly Of The Metal Inclined Sleeve
Respect air and creepage distances when assembling the appliance inlet or the socket-outlet onto the metal inclined sleeve, according to the operating voltage of the main and auxiliary circuit and the degree of pollution. Connect the metal inclined sleeve to earth.
Assembly Of The Plug/Inlet Cap
Assemble the small fixing part supplied on the last link of the chain and fix it to the plug/inlet body by means of one of the screws.
In order to achieve watertightness, do not forget the colour-coded ring at the rear of the inlet or socket-outlet.
The colour-coded rings allows visual identification of the pole depending on the colour code of each country.
When assembling the SPeX on a metallic support (enclosure, panel, etc …), the isolating ring must be positioned as above.
To ensure a safe and reliable operation, the SPeX must be used according to its designed destination, in a strict respect of the required operation of connection and disconnection.
Socket-outlets, plugs, connectors and inlets are protected against dust and water ingress by means of caps, which must be re-assembled after use.
To achieve IP65/IP66, the socket-outlet or connector cap must be assembled with its slot facing the socket-outlet protruding finger.
1. Insert the plug straight into the socket-outlet, until a ‘click’ is heard. The plug and its flexible cable must not exert constraint on the socket-outlet.
2. Pull on the plug to make sure it is properly latched in the socket-outlet. A small rotation of the plug, in either direction, allows the locking finger of the socket-outlet to prevent any further rotation.
3. To close the pilot circuit, turn the ring of the socket-outlet up to the stop towards “1”. Check the continuity of the pilot.
DO NOT ATTEMPT TO TURN THE RING TOWARDS “1” WHEN THERE IS NO PLUG ENGAGED.
4. To open the pilot circuit and unlock the plug, turn the ring back to “0” up to the stop. Press on the button to release the plug. The caps must then be re-assembled on both sides.