Marechal DN20C Plugs – 20 Contacts 25A 415V IP54/55 Multi-Contact Connectors

Marechal DN20C Plugs – 20 Contacts 25A 415V IP54/55 Multi-Contact Connectors

Marechal DN20C Plugs – 20 Contacts 25A 415V IP54/55 Multi-Contact Connectors

Marechal DN20C plugs and sockets are metal multi-contact connectors and have a rated current of 25A, a maximum voltage of 415V and up to 20 contacts.

DN20C connectors form part of the Marechal range of signal and control plugs – multicontact connectors (5 to 37) with waterproof electrical sockets to IP66/IP67 and IK08 IK09 protection for electrical equipment against external mechanical impacts.

Marechal DN20C Plugs – Technical Specification

Rated Current/Contact (with wiring according to standard) 30A
∑ of Currents (Contacts) ≤ 350A
Maximum Voltage 415V
IP Protection Lid Closed IP55
IP Protection Connected Plug IP54
Shock Resistance IK09
Ambient Temperature -40ºC to +135ºC
Flexible Wiring (Min-Max) 1mm² – 6mm²
Stranded Wiring (Min-Max) 1.5mm² – 10mm²
Wiring Terminals Screw type
Keying Positions 4

Marechal DN20C Plugs – 20 Contacts 25A 415V IP54/55 Multi-Contact Connectors

Marechal Connectors – DN20C

Marechal DN20C Plug Polarity Options

The DN20C is available with a wide range of voltages and polarity options for both female socket outlets and male inlet plugs:

  • 50V, 10P
  • 50V, 11P
  • 50V, 12P
  • 50V, 13P
  • 50V, 14P
  • 50V, 15P
  • 50V, 16P
  • 50V, 17P
  • 50V, 18P
  • 50V, 19P
  • 50V, 20P
  • 415V, 9P+E
  • 415V, 10P+E
  • 415V, 11P+E
  • 415V, 12P+E
  • 415V, 13P+E
  • 415V, 14P+E
  • 415V, 15P+E
  • 415V, 16P+E
  • 415V, 17P+E
  • 415V, 18P+E
  • 415V, 19P+E


Umax Polarity Marechal Socket Outlet (Female) DN9C Marechal Inlet (Male) DN9C
50V 10P  1964100 1968100
50V 11P  1964110 1968110
50V 12P  1964120 1968120
50V 13P  1964130 1968130
50V 14P   1964140 1968140
50V 15P   1964150 1968150
50V 16P   1964160 1968160
50V 17P   1964170 1968170
50V 18P   1964180 1968180
50V 19P   1964190 1968190
50V 20P  1964200 1968200
415V 9P+E 1964091 1968091
415V 10P+E 1964101 1968101
415V 11P+E 1964111 1968111
415V 12P+E 1964121 1968121
415V 13P+E 1964131 1968131
415V 14P+E 1964141 1968141
415V 15P+E 1964151 1968151
415V 16P+E 1964161 1968161
415V 17P+E 1964171 1968171
415V 18P+E 1964181 1968181
415V 19+E  1964191 1968191
Marechal DN20C Plugs & Power Distribution Systems

Marechal DN20C decontactors (plug and socket outlets with integral power switch) are supported by an ancillary range of wall mounting sockets, wall boxes, socket outlets, sleeves, inlets and handles.

Marechal DN20C Handles


Marechal DN20C Boxes


Marechal DN20C Sleeves


Marechal DN20C

Contact T&D To Discuss Technical Specifications For Marechal DN20C Plug-Sockets

Marechal DN20C Plugs – Install & Operation Guidelines

Marechal DN20C Plugs – Install & Operation Guidelines

Installation & Operation Guidelines

  • To ease their operation, the devices must be installed as follows :
  • Install socket-outlets with the latch at the top (Figure C1), or on the side in case of risk of accumulation of foreign material inside the cover.
  • Install appliance inlets with the catch at the top. The use of connectors with cover opening at 180° may be necessary. See figure C2.
  • When this is not possible, install appliance inlets with the catch at the bottom. See figure C3.
  • When facing downwards, IP54 appliance inlets do not protect the mating connectors against streaming water. Use IP66 devices. See figures C2/C3.


  • Remove an adequate length of cable outer sheath according to the accessory used. Ensure that the cable sheathing extends through the cord grip into the handle or box as required to achieve the intended sealing and cord gripping performance.
  • Strip conductor insulation to the length indicated. See table T1
  • Do not back terminal screws completely out ;
  • Fully insert the conductor and tighten the terminal screws to the torque indicated. See table T1.

Mouldings display a double marking according to their use, emitting side or receiving side :

  • socket-outlet/connector terminal numbers are preceded by an “S”;
  • plug/inlet terminal numbers are preceded by an “F”.

E.g. F4/S2 : This terminal receives conductor n° 4, plug side and conductor n° 2, socket-outlet side.

  • DN20C both sides : see figure F4,

Tension Cord

The release of the latch is performed by a tension cord. One end of this cord must be attached either to the flexible cable or to a suitable fixed point of the installation. The other end is attached to the latch release mechanism.

Latch Release Mechanism

This mechanism comes in two different types :

  • Ejecting connector : The retaining latch is directly activated by the tension cord in case of traction. See figure E1.
  • Ejecting plug : A mechanism is assembled on the plug. It releases the retaining latch of the socket-outlet in case of traction on the tension cord. See figure E2.

For the larger plugs, a cam mechanism inserted between the plug top and the handle. See figure E3.


Some handles are equipped with an eyelet. This eyelet allows an optimal pulling angle of the tension cord on the latch release mechanism. See figures E1/E2.


The end of the tension cord that must be attached either to the flexible cable or to a suitable fixed point of the installation is equipped with a loop. A crimping ferrule is supplied to loop the other end of the cord, once it has been passed through the handle eyelet, the latch release mechanism, and cut to the adequate length.

Cable Tie

A cable tie is supplied, to attach the loop of the tension cord onto the flexible cable.

Sealing Rings

Insert a sealing ring between the device and its rear accessory (handle, angle, etc.). The two protrusions of the rings must be positioned on the latch side for the socket-outlet/ connector and on the catch side for the plug/appliance inlet.


  • The socket-outlet is shielded by a protective lid held in the closed position by a latch.
  • Depress the latch to release the lid. See figure F5.
  • To connect, align the bayonets of the device with the hollow parts of the complementary device. Insert the device and turn until the stop. The device is in the rest position, circuit open.
  • Push the device fully home until latched.
  • To disconnect, depress the latch. The device returns to its rest position.
  • Turn the device clockwise to remove it. Shut the lid.

Self-Ejecting Devices (Marechal DN Only)

  1. Lift the latch to release and open the lid.
  2. Align the plug/inlet catch with the socket-outlet retaining latch and push the mobile part fully home until it is held in place by the latch.
  3. To release the mobile part, pull on the tension cord. Check that the cover is properly closed.

Read Blog: High Temperature Plugs For Critical Heat Resistant Applications

Hazardous Area Plugs Sockets

Visit Hazardous Area Plugs for Zone 1 & Zone 2 ATEX certified plugs and sockets for potentially explosive atmospheres.

Control Stations – Industrial & Hazardous Area (ATEX)Control Stations ATEX Zone 1 Zone 2 Hazardous Area

Control stations provide effective remote and local motor control with pushbuttons, visual indicators and circuit control – T&D stock an extensive range of pushbuttons, pilot lights and selector switches suitable for both hazardous and non-hazardous areas.

➡ Emergency Stop ♦ Emergency Power Off ♦ Emergency Stop/Start ♦ Stop Stations ♦ Start Stations ♦ Stop/Start Stations ♦ ATEX Certified ♦ Zone 1 & Zone 2 (Gas Vapour) ♦ Zone 22 Dust – see Hazardous Area Control Stations

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