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.
B
C
Table 6 - Custom Mounting Dimensions
'A'
'B'
Model
Inches mm Inches mm Inches mm
DR30
2.25
57
1.89
DR50
2.50
64
2.17
DR100
3.25
83
2.59
DR150
4.00
102
3.20
DR250
4.50
114
3.86
DR400
4.50
114
3.86
DS7c/DR7c
3.25
83
2.59
OPERATION
To ensure safe and reliable operation MELTRIC
plugs and receptacles must be used in
accordance with their assigned ratings.
MELTRIC plugs can only be used in conjunction
WARNING
with mating receptacles or plugs manufactured by
MELTRIC or another licensed producer of products
DANGER
bearing the
technology trademark.
TM
CAUTION
MELTRIC plugs & receptacles are designed with
different keying arrangements, so that only plugs and
NOTICE
receptacles with compatible contact configurations and
electrical ratings will mate with each other.
ADVERTENCIA
Connection
DANGER
To connect a plug and receptacle, first depress the
pawl to open the lid on the receptacle, then orient the
CAUTION
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
AVISO
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.
On the DR150, DR250 & DR400 devices, an integral
mechanism provides easy connection of the plug to the
receptacle. With the DR150, DR250 & DR400 plug
partially inserted and rotated 30° so that it is positioned
for connection, place the wire clamps around the
boltheads as shown in figure 3
B
'C'
48
.19
5
55
.19
5
66
.22
5.5
81
.22
5.5
98
.28
7
98
.28
7
66
.22
5.5
To pull the plug into the receptacle, simply push the
handles back along the side of the receptacle and then
push the plug into the receptacle until the plug
is latched in place, as shown in figure 4. After
connection, the mechanism must be released to
allow disconnection of the device.
Disconnection
To break the connection, simply depress the pawl
as shown in figure 5. 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
6. Close and latch the lid on the receptacle.
1
2
Achieving Environmental Ratings and Watertightness
For devices rated Type 4, 4X or 3R, use only
with mating devices having identical markings to
maintain enclosure rating of the mated pair.
Rated ingress protection applies to the device when
WARNING
the plug and receptacle are mated and latched
together. It also applies to the receptacle when the lid
DANGER
is latched closed.
CAUTION
Lockout Provisions
Some MELTRIC 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.
3
Some receptacles may be purchased with optional
lockout provisions and used with 5/16-inch shank
locks. 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 will not prevent the insertion of
a plug. Lockout of the receptacle is only accomplished
when the lid is locked closed.
4
MAINTENANCE
WARNING
disconnect electrical power to the receptacle to
DANGER
eliminate the risk of electrical shock.
CAUTION
MELTRIC products require little on-going maintenance.
However, it is a good practice to periodically perform
NOTICE
the following general inspections:
• Check the mounting screws for tightness.
ADVERTENCIA
• Verify that the weight of the cable is supported
by the strain relief mechanism and not by the
DANGER
terminal connections.
CAUTION
• Check the IP gaskets for wear and resiliency.
Replace as required.
AVISO
• 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
damage is observed, the device should be replaced.
Receptacle contacts may be inspected by a qualified
electrician. This should only be done with the power
5
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
6
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
production, 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
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 com-
pany. 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 keying standards
established to ensure intermatablility with similarly rated
products manufactured by Marechal Electric Group.
Before inspecting, repairing, or
maintaining MELTRIC products,
technology trademark. The
TM
TM
INSDR/DR7/DS7 I