Adjust the cable location so that it will not be under
tension inside the handle and tighten the compression
nut to secure the cable.
Assembly for Mounted Receptacles (or Inlets)
In applications where DS and DSN receptacles (or
inlets) are mounted to wall boxes, panels or other
equipment, optimal operation is achieved when the
device is installed with the latch at the top. For DS
receptacles, mount device so one latch is at the top.
Insert the cable or wires through the wall box and cut
to allow adequate length, strip the cable sheath as
desired, strip the individual wires to 25/64", and twist
the strands of each conductor together.
Assemble the receptacle (or inlet) and the color-cod-
ed gasket to the box with the appropriate hardware.
Assemble the mating plug (or receptacle) to the cord
end as indicated in the assembly instructions above
for in-line connections, except there will be no finger
drawplate or associated black gasket.
Hole Pattern for Custom Mounting
In applications where custom mounting to a panel or
box is being performed, the clearance and mounting
holes should be drilled as indicated in the following
diagram and Table 2.
NOTICE:
In order to maintain the NEMA 4X or IP 66
& 67 protection provided by DSN models in custom
installations, watertight seals should be used under
the heads of the four mounting bolts and they must
be retained by a lock washer and 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
sufficient 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.
They can only be used in conjunction with mating
receptacles or plugs manufactured by MELTRIC or
another licensed producer of products bearing the
technology trademark.
Connection
To connect a plug and receptacle, first depress the
pawl to open the lid on the receptacle, then orient
the plug as shown in figure 1 so that the red dot
on the outside of the casing lines up with the red dot
just to the left of the latch on the receptacle casing.
Push the plug partially into the receptacle until it hits
a stop, then rotate the plug in the clockwise direction
until it hits another stop after about 30° of rotation.
At this point, the circuit is still open. Push the plug
straight into the receptacle as shown in figure 2 until
it becomes securely latched in place. The electrical
connection is now made. On in-line connectors,
squeeze the drawplates on both sides of the device
together until the plug latches in place.
Disconnection
To break the connection, simply depress the pawl
as shown in figure 3 . This will break the circuit and
eject the plug straight out to the rest, or off, position.
The plug contacts are de-energized at this point. To
remove the plug, rotate it counter-clockwise (about
30°) until it releases from the receptacle as shown in
figure 4 . Close and latch the lid on the receptacle.
Connection and Disconnection of
Stainless Steel DS
Operation of the stainless steel DS is similar to the
standard DS/DSN operation with the following two
exceptions:
1. The stainless steel DS utilizes two pawls to
latch the plug to the receptacle. Thus to
disconnect the plug from the receptacle both
pawls must be depressed.
2. The stainless steel DS24c plug casing does not
have a red dot that can be used for proper
alignment before insertion. Instead, the thicker
groove in the plug casing should be aligned with
the thicker protruding screw in the receptacle
and the thinner groove should be aligned with
the thin protruding screw.
3. The stainless steel DSN37c casings do not
utilize red dots for alignment. For proper
alignment before insertion, align the arrow on
the plug with the “off” position on the receptacle.
ACHIEVING RATED WATERTIGHTNESS
Rated ingress protection applies to the device when
the plug and receptacle are mated and latched togeth-
er. It also applies to the receptacle when the lid is
latched closed.
NOTICE:
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.
Lockout Provisions
Poly DS and DSN receptacles may be purchased with
optional lockout provisions. To lockout the
receptacle, close and latch the lid and then attach
the locking device through the optional hole provid-
ed in the pawl. This will prevent the lid from being
opened for the insertion of a plug.
NOTICE:
Attaching the receptacle locking device
with the receptacle lid open will not prevent the
insertion of a plug. Lockout of the receptacle is
only accomplished when the lid is locked closed.
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 mainte-
nance. 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.
Replace as required.
• Verify the electrical continuity of the ground circuit.
• Check the contact surfaces for cleanliness and
pitting.
Receptacle contacts may be inspected by a qualified
electrician. This should only be done with the power
off. If any significant pitting of the contacts or other
serious damage is observed, the device should be
replaced.
Deposits of dust or similar foreign materials can be
rubbed off the contacts with a clean cloth. MELTRIC
recommends regular cleaning of contacts in low
voltage applications. If a cleaning spray is used, it
should be a fast evaporating, non-conductive type
that doesn’t leave a residue and is compatible with
plastics.
MANUFACTURER’S RESPONSIBILITY
MELTRIC’s responsibility is strictly limited to the repair
or replacement of any product that does not conform
to the warranty specified in the purchase contract.
MELTRIC shall not be liable for any penalties or
consequential damages associated with the loss of pro-
duction, work, profit or any financial loss incurred by the
customer.
MELTRIC Corporation shall not be held liable when
its products are used in conjunction with products
not bearing the
technology trademark. The
use of MELTRIC products in conjunction with mating
devices that are not marked with the
technol-
ogy trademark shall void all warranties on the product.
MELTRIC Corporation
is an ISO 9001 certified company.
Its products are designed, manufactured and rated in ac-
cordance with applicable UL, CSA and IEC standards.
MELTRIC designs and manufactures its products in accor-
dance with Marechal keying standards established to en-
sure intermateablility with similarly rated products
manufactured by Marechal Electric Group.
INSDSDSNMULTI H
Table 2 - Custom Mounting Dimensions
‘A’
‘B’
C
Model
Inches mm Inches mm Inches mm
DSN24c
2.25 57
1.89 48
.19 5
DSN37c
2.50 64
2.17 55
.19 5
DS24c
2.25 57
1.89 48
.19 5
DS37c
2.50 64
2.17 55
.19 5
C
B
B
A
WARNING
DANGER
CAUTION
NOTICE
WARNING
DANGER
CAUTION
NOTICE
ADVERTENCIA
DANGER
CAUTION
AVISO
