Insert the cable or wires through the wall box and cut
to allow adequate length, strip the individual wires to
the lengths indicated in Table 4. Back out the terminal
screws on the receptacle (or inlet) far enough (but not
completely) to allow the conductors to pass, insert
the conductors fully into their respective terminals and
tighten the terminal screws to the torque indicated in
Table 5.
Assemble the receptacle (or inlet) and the color
-coded gasket to the angle and box with the appropriate
hardware.
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.
Table 6 - Custom Mounting Dimensions
Model
‘A’
‘B’
‘C’
Inches mm Inches mm Inches mm
DS20
2.25
57
1.89
48
.19
5
DR30
2.25
57
1.89
48
.19
5
DS30
2.50
64
2.17
55
.19
5
DR50
2.50
64
2.17
55
.19
5
DS60
3.25
83
2.59
66
.22
5.5
DS100C
3.25
83
2.59
66
.22
5.5
DSN150
4.00
102
3.20
81
.22
5.5
DS200
4.50
114
3.86
98
.28
7
DR250
4.50
114
3.86
98
.28
7
DSDC1
2.25
57
1.89
48
.19
5
DSDC3
2.50
64
2.17
55
.19
5
DSDC6
3.25
83
2.59
66
.22
5.5
DSDC9
4.00
102
3.20
81
.22
5.5
DSDC2
4.50
114
3.86
98
.28
7
NOTICE:
In order to maintain the Type 4X protection
provided in custom installations, watertight seals
should be used under the heads of the four mounting
screws 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.
EXPLOSION HAZARD
Do not connect or disconnect these plugs and re-
ceptacles unless all sources of power have been re-
moved and the area is known to be non-hazardous.
MELTRIC plugs and receptacles can only be
used in conjunction with mating receptacles or
plugs manufactured by MELTRIC or MELTRIC's
parent company,
. MELTRIC plugs
and receptacles are designed to mate only with
MELTRIC or Marechal devices of compatible contact
configurations and electrical ratings.
Connection
To connect a plug and receptacle, first remove all
sources of power. Depress the pawl to open the lid on
the receptacle, then locate and align the red dots near
the connecting ends of both the plug and receptacle
casings. Push the plug partially into the receptacle
until it stops. See step 1 . Rotate the plug clockwise
approximately 30° until it hits another stop, as shown in
step 2 . Complete the circuit connection by pushing the
plug straight into the receptacle until it becomes securely
latched in place, as shown in step 3a .
Some MELTRIC devices, including the DSN150,
DSDC9, DS200, DR250, and DSDC2, come with
drawbar clamps that provide easy connection of the
plug to the receptacle. Follow connection instructions
as indicated in the previous paragraph. Once the
device is ready for secure connection, place the wire
clamps around the hooks as shown in step 3b.
Next, push the handles back along the side of the
receptacle. This guides the plug into the receptacle
until the plug is latched in place, as shown in step 4 .
Once latched, tighten the locking screw on the pawl
to safeguard against accidental disconnection. Use
a
5
/
32
in. (4 mm) or 6 mm hex wrench to hand tighten
the screw to a hard stop, as shown in step 5 . Once
the screw is tightened, the pawl mechanism cannot be
depressed. Upon completion, the power source can be
turned on.
WARNING
DANGER
CAUTION
NOTICE
ADVERTENCIA
DANGER
CAUTION
AVISO
Once fully mated, the devices
must be locked together using
the pawl locking screw. A
5
/
32
in. (4 mm) or 6 mm hex
wrench should be used to fully hand tighten the screw
down to a hard stop so that the pawl mechanism
cannot be depressed.
Disconnection
Remove all power to the device. Use a
5
/
32
in. (4 mm)
or 6 mm hex wrench to fully loosen the pawl's locking
screw, as shown in step 1 . Release the drawbar
mechanism on larger devices if it is still engaged. Press
down on the pawl to eject the plug into the rest, or OFF
position. Rotate the plug approximately 30° counter-
clockwise until it releases from the receptacle, as seen
in step 2 . Close and latch the receptacle lid, as seen
in step 3 .
Achieving Environmental Ratings and Watertightness
All Zone 2 DSN/DS/DR/DSDC Haz Loc devices
are rated Type 4X. This environmental rating is
achieved when the plug and receptacle are mated, or
when the receptacle lid is latched closed.
Lockout Provisions
All DS/DSN/DR/DSDC Hazardous Location plugs are
provided with lockout provisions. To lockout the plug,
insert a locking device through the hole provided in the
casing. This will prevent the plug from being inserted
into a receptacle.
Receptacles are also provided with lockout provisions
for a
5
/
16
in diameter lock shank or the optional LP-843
locking pin. To lockout the receptacle, close and latch
the lid and then attach the locking device through the
hole provided 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 may not prevent the insertion
of a plug. Lockout of the receptacle is only accom-
plished when the lid is locked closed.
MAINTENANCE
Before inspecting, repairing, or
maintaining MELTRIC products,
disconnect electrical power to the receptacle to elimi-
nate 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.
Deposits of dust or similar foreign materials can be
rubbed off the contacts with a clean cloth. Sprays
should not be used, as they tend to collect dirt. If any
significant pitting of the contacts or other serious dam-
age is observed, the device should be replaced.
Receptacle contacts may be inspected by a qualified
electrician. This should only be done with the power
off. It is accomplished by depressing the numbered
ring around the circumference of the interior on two
opposite points. This will allow the shutter to be
manually turned clockwise as required to permit
access to the contacts. Once the inspection is complete,
the shutter
must
be rotated counter-clockwise until it is
locked in the closed position.
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
technology trademark shall void all warranties on the
product.
MELTRIC Corporation
is an ISO 9001 certified company. Its
products are designed, manufactured and rated in accordance
with applicable UL, CSA and IEC standards. MELTRIC designs
and manufactures its products in accordance with Marechal key-
ing standards established to ensure intermateablility with similarly
rated products manufactured by Marechal Electric.
INSZONE2 D
WARNING
DANGER
CAUTION
NOTICE
ADVERTENCIA
DANGER
CAUTION
AVISO
WARNING
DANGER
CAUTION
NOTICE
ADVERTENCIA
DANGER
CAUTION
AVISO
C
A
B
B
WARNING
DANGER
CAUTION
NOTICE
ADVERTENCIA
DANGER
CAUTION
AVISO
WARNING
DANGER
CAUTION
NOTICE
ADVERTENCIA
DANGER
CAUTION
AVISO
3a
1
2
1
3
2
4
3b
Wire clamp
around hooks
5