User guide

GENERAL
PXN12c/DXN25c/DXN37c plugs and receptacles
comply with international and European safety rules
and particularly with ATEX 94/9/CE Directive.
PXN12c/DXN25c/DXN37c products can be used in
zones 1, 2 (Gas), and 21, 22 (Dust).
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 without a load 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.
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
c
rimping, crimp the contact with a KNIPEX
c
rimping tool part # 61-CA500 or a GREENLEE
c
rimping tool part # 45505. Use the 4 mm
2
footprint whatever the conductor cross-section.
P
erform a double crimping with a 90° rotation, in
c
ompliance with IEN 60352-2.
2
. Prior to soldering or crimping a heat shrink
sleeve (supplied- part # 9CP0250) must be
s
lipped over each conductor or alternatively an
insulating sleeve (supplied - part # 9SES201007301)
c
an be used but the insulating sleeve must be
i
nstalled using sleeve tool 61-CA500 (sold
separately).
3
. If soldering use tin solder and a 50 W soldering
iron. Insert the conductor in the terminal and
h
eat the terminal for about 30 s. During heating,
insert the solder wire in the hole at the foot of the
t
erminal and let the solder penetrate by capillary
a
ction. 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.
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
accordance with their assigned ratings.
M
eltric plugs & receptacles can only be used in
c
onjunction with mating receptacles or plugs
m
anufactured by Meltric or another licensed producer
o
f products bearing the
TM
t
echnology
trademark. WARNING: PXN12c/DXN25c/DXN37c
p
lugs and receptacles must be operated in
c
ompliance with its explosion-proof classifications.
W
hen not in use, the receptacle is shielded by a
protective lid preventing the entry of dust and
m
oisture.
T
his is held in the closed position by one or two
l
atch(es). To release the spring-loaded lid, depress
the latch(es).
DXN25c/DXN37c
To connect, align the plug bayonets with the hollow
part of the receptacle. Insert the plug and turn until
the stop. The plug is in the rest position, circuit is
open, figure 1. Push the plug fully home until
latched, figure 2. To disconnect, depress the latch.
The plug returns to its rest position, figure 3. Turn
the plug in the opposite direction to remove it. Shut
the receptacle lid, figure 4.
PXN12c
PXN12c
DXN25c
DXN37c
OPERATING INSTRUCTIONS
Meltric Corporation / 4640 Ironwood Drive Franklin, WI 53132
T
el. : 800 433 7642 / Fax : [phone] / e-mail : [e-mail]
INSPXNDXNMULTI E
A
manufacturer of products using Marechal technology
m
eltric.com
WARNING
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
Contact
Tool