Meltric PN20, PNHT, PN7C Instruction Manual
IP54/IP55
A
COMPANY OF MARECHAL ELECTRIC
WARNING
ENGLISH OPERATING INSTRUCTIONS
CONSIGNES D’UTILISATION
DX
PN20/PNHT/PN7C
©2020 MELTRIC Corporation. All rights reserved.
GENERAL
PN Series Standard Duty plugs and receptacles are
designed to offer superior safety, durability and consistent,
electrical contact performance. Please follow the
instructions below to ensure the proper installation,
operation and maintenance of this product.
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.
RATINGS
MELTRIC’s PN7c and PN20 plugs & receptacles are
listed in accordance with UL 1682, CSA 22.2 No. 182.1
and IEC 60309-1. The amperage, voltage and environmental
ratings are indicated in Table 1.
Current
Interrupting
Non-Current
Interrupting
Voltage
Frequency
Environmental IP66/IP67
*15 A above 480VAC
INSTALLATION
PN Series plugs and receptacles should be installed
by a qualied person in accordance with all applicable
local and national electrical codes.
requirements and are within the capacities of the terminals
noted in Table 2.
Model
PN20
PNHT
PN7c
*Capacity is based on THHN wire sizes.
A manufacturer of products using Marechal technology
There are inherent dangers
associated with electrical
Table 1 - General Ratings
PN7c PN20 PNHT
15 A 20 A* -
- 30 A 30 A
480VAC/
130VDC
50- 400 Hz 50- 400 Hz 50- 400 Hz
Before starting, verify that the power has been
disconnected, all product ratings are appropriate
for the application and the conductors meet code
Table 2 — Wiring Terminal Capacity* (in AWG)
Wire Size Min Wire Size Max
600VAC
IP66/IP67
14 8
14 8
18 10
INSPN P
480VAC/
130VDC
IP44
General Notes & Precautions
1. This product must be installed by certied personnel.
2. NOTICE: Do not tin terminal wire ends.
3. NOTICE: Do not use moisture repellent sprays on
the contacts.
4. Do not back terminal screws fully out.
5. Self-tapping screws are provided for use with
some polymeric accessories. High torque may be
required to drive them in. NOTICE: Once they are
seated, care should be taken in order to avoid
over-tightening them against the plastic material.
6. NOTICE: MELTRIC threaded handles come with
tapered style threads. The use of tting seal tape
is required to maintain watertightness of all NPT
ttings and joints.
7. Various handles and cord grip options may be
used. These instructions are based on handles
provided with integral multi-layer bushing cord
grips.
8. If the plug and receptacle are stainless steel then
stainless steel accessories must be used.
ENVIRONMENTAL
Optimum operating conditions are achieved by
installing IP66/IP67 plugs and receptacles with the
latch at the top.
NOTICE: To prevent water ingress, non-watertight
plugs/receptacles must always face downwards when
not mated.
Wire Strip Length
Wire strip lengths are indicated in Table 3. Strip lengths
for cable sheathing will depend on the specic application.
When used with handles, the cable sheathing should
extend into the handle to ensure secure cord gripping.
Table 3 - Wire Strip Lengths – Dimension A
Device/Contact Inches mm Inches mm
PN20 3/8 10 3/8 10
PNHT 3/8 10 3/8 10
PN7c 5/16 8 5/16 8
Terminal Screw Tightening Torques
The wiring terminals are spring-assisted to prevent
loosening due to wire strand settlement, vibration
and thermal cycling. NOTICE: Avoid over-tightening.
Appropriate tools and tightening torques are indicated
in Table 4.
Table 4 - Terminal Screw Tightening Torques
Device/Contact
PN20 8 0.9 3 mm or 1/8" precision tip
PNHT 8 0.9 3 mm or 1/8" precision tip
PN7c 8 0.9 3 mm or 1/8" precision tip
Wiring the Terminal Connections
Verify that power has been disconnected prior to
wiring the conductors to the plug and receptacle.
Wiring must be made according to all applicable local
and national electrical codes. Check that the rating is
correct for the installation.
Follow the conductor-coding and terminal markings
detailed in Table 5. WARNING: This product must be
electrically grounded. A grounding terminal is provided
on all metal accessories, with a green screw and a
washer.
For Screw Type Terminals
Insert cable through handle and strip cable jacket to
adequate length. The cable jacket should extend at
least 1/2" into handle. Back out terminal screws only
far enough for conductor to clear. Strip each conductor
per Table 3. Twist the strands of each conductor together
and insert fully into the terminal. Tighten terminal screws
to torques indicated in Table 4.
Receptacle Plug/Inlet
Torque
in-lbs
Required Screwdriver or
N-m
Allen Wrench
Table 5 - Conductor Coding and Terminal Markings
Terminal ID Function
“G”, “E” or GND
“N”
PN20/PNHT Models
“1” or “R1” (Black)
“2” or “S2” (Red)
“3” or “T3” (Blue)
PN7c Model
“1” to “6”
ASSEMBLY
Verify power has been disconnected prior
to assembly.
For In-Line Connections
Insert the cable through the handle and gasket. Strip
the cable jacket to provide a workable wire length, being
mindful that the jacket must extend into the handle
to achieve a secure grip. Then strip the wires to the
lengths indicated in Table 3. When applicable back out
the terminal screws far enough (but not completely) to
allow the conductors to pass. Insert the conductors fully
into their respective terminals and hand tighten to the
torques indicated in Table 4.
Bushing
Compression
Nut
For Mounted Receptacles/Inlets
Insert the cable through the wall box and cut to allow
adequate length. Strip the cable jacket to allow a workable
wire length. Strip the individual cables to the lengths
indicated on Table 3. When applicable back out the
terminal screws far enough (but not completely) to allow
the conductors to pass. Insert the conductors fully into
their respective terminals and hand tighten to the torques
indicated in Table 4. Assemble the receptacle/inlet and the
color gasket to the box with the appropriate hardware.
Hole Pattern for Custom Mounting
In applications where custom mounting to a panel
or box is desired, the clearance and mounting holes
should be drilled as indicated in the following diagram
and Table 6.
Green equipment grounding conductor
only (or green with yellow stripe).
White or gray, system ground
(neutral conductor only “N”)
“Hot” conductors, no specic lettered terminal
applies to any specic colored conductor
“Hot” conductors, no specic lettered terminal
applies to any specic colored conductor
Receptacle (or Inlet)
Strain
Relief
Handle
Color-Coded
Gasket
B
C
Table 6 - Custom Mounting Dimensions
Model
PN20 2 50 1.65 42 0.19 5
PNHT 2 50 1.65 42 0.19 5
PN7c 2 50 1.65 42 0.19 5
NOTICE: In order to maintain the IP protection provided
by PN models in custom installations, watertight seals
should be used under the heads of the four mounting
‘A’ ‘B’ ‘C’
Inches mm Inches mm Inches mm
A
B
bolts and they must be retained by a lock washer and
WARNING
nut on the inside of the box or panel. Alternatively, four
blind holes may be drilled and threaded to accommodate
the mounting screws, provided that the hole depth is
sufcient to achieve adequate gasket compression.
OPERATION
To ensure safe and reliable operation, MELTRIC
plugs and receptacles must be used in accordance
with their assigned ratings.
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
MELTRIC plugs & receptacles are designed with
different keying arrangements, so that only plugs and
receptacles with compatible contact congurations and
electrical ratings will mate with each other.
Connection
To connect, open the protective plug cap, align the red
dots on the plug and receptacle bodies, insert plug into
receptacle, apply force and rotate the plug 20° counterclockwise(CCW). The contacts will mate and the circuit
will close.
technology trademark.
remove the silver-nickel, butt-contact tip and degrade
the contact consistency. Sprays should not be used
since they tend to collect dirt. If any signicant pitting of
the contacts or other serious damage is observed, the
device should be replaced.
Receptacle contacts may be inspected by qualied
personnel. This should only be done with the power
disconnected. Any repair or service must be performed
with genuine MELTRIC parts only.
MANUFACTURER’S RESPONSIBILITY
MELTRIC’s responsibility is strictly limited to the repair
or replacement of any product that does not conform
to the warranty specied in the purchase contract.
MELTRIC shall not be liable for any penalties or
consequential damages associated with the loss of
production, work, prot or any nancial loss incurred by
the customer.
MELTRIC Corporation shall not be held liable when
its products are used in conjunction with products
not bearing the
The use of MELTRIC products in conjunction with
mating devices that are not marked with the
technology trademark shall void all warranties on
the product.
technology trademark.
Disconnection
To open the circuit and remove the plug, press the pawl,
apply inward force and rotate the plug 20° clockwise
(CW). The plug can be safely withdrawn from the
receptacle. The plug contacts remain shrouded until after
the circuit is disconnected. Close protective plug cap to
prevent contamination by dirt, dust or other debris.
LOCKOUT PROVISIONS
The receptacle lid can be locked with a locking pawl
except PNHT.
Screw: Plug inserted or cap closed, turn the 5/16"
screw with an Allen key until it reaches the bottom.
NOTICE: Do not over tighten.
MAINTENANCE
Before inspecting, repairing, or
maintaining MELTRIC products,
disconnect electrical power to the receptacle to eliminate
the risk of electrical shock.
MELTRIC products require little on-going maintenance.
However, it is a good practice to periodically perform
the following general inspections:
• Check the mounting screws for tightness.
• Verify that the weight of the cable is supported
by the strain relief mechanism and not by the
terminal connections.
• Check the IP gaskets for wear and resiliency.
In wet/wash-down environments, the gaskets
should be inspected periodically (6 months) for
wear and hardness. Replace gaskets as needed.
• Verify the electrical continuity of the ground
circuit every 6 months.
• Check the contact surfaces for cleanliness
and pitting.
Deposits of dust or debris can be rubbed off the contacts
with a clean cloth. NOTICE: Under no circumstances
should the contact surfaces be led since this will
INSPN P
Loading...