Contact Configurations
This is in reference to different keying positions on the
PXN12c. If or when 2 contacts are not in use, 9 different
contact/keying configurations can be achieved by plugging
the contact holes not in use with the hole plugs supplied.
OPERATION
To ensure safe and reliable operation,
MELTRIC
plugs and
receptacles must
be used in
accor-
dance
with
their
as-
signed
rat-
ings.
MELTRIC
plugs & receptacles can only be used in conjunction
with mating receptacles or plugs manufactured
by MELTRIC or another licensed producer of products
bearing the
technology trademark.
WARNING:
PXN12c/DXN25c/DXN37c plugs and
receptacles must be operated in compliance with its
hazardous area classifications.
When not in use, the receptacle is shielded by a protective
lid preventing the entry of dust and moisture.
The maximum cross-section of the conductors is
4934 CM (2.5 mm
2
) (solid or flexible). Conductors
must be stripped by .315 in (8 mm).
1. Contacts can be soldered or crimped. If
crimping, crimp the contact with a KNIPEX
crimping tool part # 61-CA500 or a GREENLEE
crimping tool part # 4CN30. Use the 4 mm
2
footprint whatever the conductor cross-section.
Perform a double crimping with a 90° rotation, in
compliance with IEN 60352-2. For 16AWG wires,
the ferrule (MEC7177071) is required. Place the
ferrule over the stripped conductor and insert it
into the contact terminal. Crimp the contact with
the conductor and ferrule using the appropriate
crimping tool.
2. Prior to soldering or crimping a heat shrink
sleeve (supplied- part # 9CP0250) must be
slipped over each conductor or alternatively
an insulating sleeve (supplied - part #
9SES201007301) can be used but the insulating
sleeve must be installed using sleeve tool
61-CA400 (sold separately).
3. If soldering use tin solder and a 50 W soldering
iron. Insert the conductor in the terminal and
heat the terminal for about 30 s. During heating,
insert the solder wire in the hole at the foot of the
terminal and let the solder penetrate by capillary
action. Let the terminal cool without any tension
on the conductor.
4. Slip the heat shrink or insulating sleeve over the
whole visible part of the contact, down to the molding.
5. Slide the heat-shrink sleeve up to the shoulder of
the contact. With a heat gun, apply heat evenly
370° around the sleeve until it shrinks around the
terminal and wire.
NOTICE:
For a proper clamping, the use of PVC
cables is not recommended.
WARNING:
This product must be electrically grounded
to Earth. A grounding terminal is provided on all metal
accessories.
Contact Assembly/Disassembly
Once wired, contacts must be inserted through the
rear of the interior moulding 1. Push each contact
fully home. Check its proper engagement by a light
pull 2. Contacts can be removed with the supplied
tool: insert the tool through the front 3. and push fully
home 4. Tool part # 9-LD12-37.
GENERAL
PXN12c/DXN25c/DXN37c plugs and receptacles
comply with international and European safety
standards in particularly with ATEX Directive 2014/34/EU.
PXN12c/DXN25c/DXN37c products can be installed
in zones 1, 2 (Gas), and 21, 22 (Dust). These devices
may be used as intrinsic safety devices provided
they are associated with certified intrinsically safe
equipment only. Such combination must comply with
the requirements in IEC/EN 60079-25. Live parts are
protected against contact test finger (IP2X/IPXXB),
according to IEC/EN 60529.
There are inherent dangers
associated with electrical products.
Failure to follow safety precautions can result in
serious injury or death. These instructions must be
followed to ensure the safe and proper installation,
operation and maintenance of the MELTRIC devices.
Before installation, disconnect all sources of power to
the circuit to eliminate the risk of electrical shock. It is
imperative that MELTRIC explosion-proof multicontact
plugs and receptacles are connected or disconnected
with the circuit in a de-energized state.
INSTALLATION
PXN12c/DXN25c/DXN37c plugs and
receptacles must be used in conjunction with
other appropriately rated hazardous duty
products and must be installed by qualified
electricians in accordance with all applicable
local and national electrical codes.
Assembly
Optimum operating conditions are achieved by installing
PXN12c/DXN25c/DXN37c plugs and receptacles with
the latch at the top.
Wiring
Before starting, verify that the power is off, that
the product ratings are appropriate for the
application, and the conductors meet code
requirements and are within the capacities of
the terminals noted in Table 1.
Cable
Terminal
Heat Shrink Sleeve or
Insulating Sleeve
Solder
Molding
Cable
Terminal
Funda Termocontractil
o Funda Aislante
Soldadura
Moldura
Câble
Contact
Manchon d’isolement
Soudure
Isolant
MULTI-CONTACTS
PXN12c / DXN25c / DXN37c
ENGLISH OPERATING INSTRUCTIONS
A COMPANY OF MARECHAL ELECTRIC
MELTRIC Corporation / 4765 W. Oakwood Park Drive Franklin, WI 53132
Tel. : 800 433 7642 / Fax : 414 433 2701 / e-mail : mail
@
MELTRIC.com
INSPXNDXNMULTI H
A manufacturer of products using Marechal technology
meltric
.com
WARNING
DANGER
CAUTION
NOTICE
ADVERTENCIA
DANGER
CAUTION
AVISO
WARNING
DANGER
CAUTION
NOTICE
ADVERTENCIA
DANGER
CAUTION
AVISO
WARNING
DANGER
CAUTION
NOTICE
ADVERTENCIA
DANGER
CAUTION
AVISO
WARNING
DANGER
CAUTION
NOTICE
ADVERTENCIA
DANGER
CAUTION
AVISO
Table 1 — Wiring Terminal Capacity* (in AWG)
Contacts
Device
Min
Max
DXN25c
16 14
DXN37c
16 14
PXN12c
16 14
1
2
3
4
5
1
2
3
4
Contact
Tool
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