Cables/Connecting
Self-ejecting electrical connectors for hazardous areas
To provide safe electrical installations for use in hazardous areas, MARECHAL ELECTRIC has developed the explosion-proof DXN DECONTACTOR range of compact and watertight connectors. Rated for operation up to 63 A, DXN decontactors combine a new mechanical self-ejecting mechanism with MARECHAL’s unique patented DECONTACTOR integrated load-break switch.
The Protection from overloads
Two self-ejecting systems have been designed to protect equipment from accidental or forcible disconnection and protect equipment from being moved whilst connected.
-Self-ejecting plugs Mounted on top of the self-ejecting explosion-proof connector, a “shark’s fin” latch is used to lift the ‘hook’ from the base and disconnect the plug from the socket. The force required to operate this system is comparable to the force required to manually disconnect a plug from the socket of a standard DXN connection. This operation immediately releases the plug every time tension is detected on the cable.
-Self-ejecting coupler sockets The “shark’s fin” hook, mounted on the base of the plug, is connected by a tension cord to the power cable. Pulling on this cord activates the shark’s fin hook to release the plug. Both systems are rated as standard ranges for operation at a maximum from 550 V to 750 V.
Permanent safety
This new ejection system for zones 1/2 (gas), and zones 21/22 (dust), is certified according to the ATEX 94/9/CE directive and IEC Ex standards, and complies with all current safety and security regulations for the protection of equipment and personnel. Connecting the DXN self-ejecting socket-outlet by direct insertion ensures users are provided with the same features as standard DXN ranges.
Whether connected or disconnected, both types of self-ejecting DXN decontactors can be operated by any authorised person, under any circumstances and often without the need for a Hot Work Permit.
Applications
This unique solution is currently used on lifeboats operating from off-shore oil rigs. It can also be used for applications such as mobile containers, cranes, electrical boats, truck hook-ups or any portable equipment.
Key facts
-Designed for hazardous areas
-Automatic IP66/IP67 water- and dust-tight sealing
-Integrated load-break switch
-Robust and compact design
-High-performance GRP housing
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