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.
RATINGS
Meltric’s PN7, PN20 and PN30 plugs & receptacles
are listed in accordance with UL 1682, CSA 22.2 No.
182.1 and IEC 60309-1. The PN12c is listed in
accordance with IEC 60309-1. The amperage,
voltage and environmental ratings are indicated in
Table 1.
INSTALLATION
PN Series plugs and receptacles should be installed
by a qualified person in accordance with all applicable
local and national electrical codes. Before starting,
verify that the power has been disconnected, all
product ratings are appropriate for the application
and the conductors meet code requirements and are
within the capacities of the terminals noted in Table 2.
NPT Guidelines are detailed in Table 3.
General Notes & Precautions
1. This product must be installed by a certified
personnel.
2. Do not tin terminal wire ends.
3. 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. Once they are
seated, care should be taken in order to avoid
over-tightening them against the plastic material.
6. Meltric threaded handles come with tapered
style threads. The use of fitting seal tape is
recommended to maintain watertightness of
all NPT fittings 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.
To prevent water ingress, non-watertight plugs and
receptacles must always face downwards when
not mated.
Wire Strip Length
Wire strip lengths are indicated in Table 4. Strip
lengths for cable sheathing will depend on the
specific application. When used with handles, the
cable sheathing should extend into the handle to
ensure secure cord gripping.
Terminal Screw Tightening Torques
The wiring terminals are spring-assisted to prevent
loosening due to wire strand settlement, vibration and
thermal cycling. Avoid over-tightening. Appropriate
tools and tightening torques are indicated in Table 5.
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 6.
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 4. Twist the strands of each
conductor together and insert fully into the terminal.
Tighten terminal screws per Table 5.
PN12c
Crimped/Soldered Terminal Wire Connections:
1. Strip each conductor to 25/64-inches (10-mm).
2A. For 18-16 AWG wires, insert Ferrule into contact.
2B. For 14 AWG Wires (max), the Ferrule is not required.
3. Insert stripped wire end into Ferrule or contact.
(Perform either step 4 or 5)
4A. 18-16 AWG Wires – For Crimping the Contacts,
use either North American Contact Crimping Tool
4CN30 (using crimping slot 12-10) or Crimp
contact with European] Contact Crimping Tool
61-CA500 (using 4 MM slot).
4B. 14 AWG Wires – For Crimping the Contacts,
use either North American Contact Crimping Tool
4CN30 (using crimping slot 8) or Crimp contact
with European Contact Crimping Tool 61-CA500
(using 4 MM slot).
5. Caution: Soldering of the wire into the contact
must be performed with the contact out of the
Interior Insulator to prevent damage to the insulator.
• Using tin solder and a 50W soldering iron, heat
the terminal for approximately 30 seconds.
While heating, apply the soldering wire into the
hole at the bottom of the terminal and let it
penetrate by capillarity action. Let it cool down
without any mechanical stress.
6. Slide the Heat Shrink Insulation Sleeve over the
contact until it butts up against the contact
shoulder. Note: Sleeve must be applied for device
creepage insulation. Please see picture.
7. With a Heat Gun that has a temperature range
of 600°F to 950°F, apply heat evenly 360°
around the sleeve until it shrinks around the
contact and wire.
Assembly of PN12c Contacts
Once wired, the contacts must be inserted into the
rear of their respective insulating block. The rear
side of the inlet/plug or receptacle/connector is
considered as the flat surface of the 4-bolt hole
mounting surface.
Assembly
Disassembly
Table 4 - Wire Strip Lengths – Dimension A
Receptacle
Plug/Inlet
Device/Contact
Inches
mm
Inches
mm
PN20/30
3/8
10
3/8
10
PN20HT/30HT
3/8
10
3/8
10
PN7c
5/16
8
5/16
8
PN12c/PN12cSS
25/64
10
3/8
10
Table 2 — Wiring Terminal Capacity* (in AWG)
Model
Wire Size
Min
Max
PN/20/30
14
8
PN/20HT/30/HT
14
8
PN7c
18
10
PN12c/PN12cSS
18
14
*Capacity is based on THHN wire sizes.
Table 1 - General Ratings
PN12
PN7
PN20
PN30
5A
15A
20A
20A
7A
20A
30A
30A
Voltage
600VAC 600VAC 600VAC 600VAC
Frequency
50-400 Hz 50-400 Hz 50-400 Hz 50-400 Hz
Environmental
IP66+67 IP66+67 IP66/IP67 IP66/IP67
IP54/IP55 IP54/IP55
*PN20HT and PN30HT are current interrupting up to 480V only,
environmental rating is IP44.
Table 3 - NPT Guidelines
NPT
Cable Range
.50”
.062 - 0.50
.75”
.187 - 0.75
1.00”
.437 - 1.10
1.25”
.750 - 1.375
1.50”*
.890 - 1.650
2.00”*
1.125 - 2.438
2.50”*
1.750 - 2.565
* PN12cSS only
Table 5 - Terminal Screw Tightening Torques
Torque
Required Screwdriver
Device/Contact in-lbs N-m
or Allen Wrench
PN20/30
8
0.9 3 mm or 1/8” precision tip
PN20HT/30HT
8
0.9 3 mm or 1/8” precision tip
PN7c
8
0.9 3 mm or 1/8” precision tip
PN12c/PN12cSS -
- crimp/solder type terminals
Current
Interrupting
Non-Current
Interrupting
!
PN20/PN30
PN20HT/PN30HT
PN7c/PN12c
OPERATING INSTRUCTIONS
Meltric Corporation
/ 4640 Ironwood Drive Franklin, WI 53132
Tel. : 800 433 7642 / Fax : 414 817 6161 / e-mail : [email protected]
INSPN F
A manufacturer of products using
Marechal technology
meltric
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