Meltric DR Series - Manual (Page 2)

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 5.
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 with
mating receptacles or plugs manufactured by Meltric
or another licensed producer of products bearing the
TM technology trademark.
Meltric plugs & receptacles are designed with
different keying arrangements, so that only plugs and
receptacles with compatible contact configurations
and electrical ratings will mate with each other.
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.
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
the plug and receptacle are mated and latched
together. It also applies to the receptacle when the
lid is latched closed.
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.
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.
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.
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
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
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
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 TM technology trademark. The
use of Meltric products in conjunction with mating
devices that are not marked with the TM
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 is a also member of BECMA,
the international Butt-contact Electrical Connectors
Manufacturers’ Association. Like all members,
Meltric additionally designs and manufactures its
products in accordance with BECMA standards
established to ensure intermatablility with similarly
rated products manufactured by other members.
www.becma.ch
INSDR/DR7/DS7 E
Table 5 - Custom Mounting Dimensions
‘A’ ‘B’ ‘C’
Model Inches mm Inches mm Inches mm
DR 30A 2.25 57 1.89 48 .19 5
DR 50A 2.50 64 2.17 55 .19 5
DR 100A 3.25 83 2.59 66 .22 5.5
DR 150A 4.00 102 3.20 81 .22 5.5
DR 250A 4.50 114 3.86 98 .28 7
DS7c/DR7c 3.25 83 2.59 66 .22 5.5
C
A
B
B
WARNING