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Allen-Bradley 140M Installation Instructions Manual page 3

Jd-frame motor circuit protector

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1.375
(34.37)
4.078
(103.58)
7.250
(184.15)
Figure 2-3 MCP Mounting Bolt Drilling Plan
.344R
(8.74)
.718
.188R
(88.90)
(4.77)
Figure 2-4 MCP Escutcheon Dimensions
NOTICE
Depending on the equipment configuration, the
MCP can be mounted using different styles of hard-
ware. The following steps describe how to mount
the MCP using standard hardware. When special
hardware is needed (for example, with the electrical
operator), the instruction leaflet describing the
accessory also describes the special mounting
arrangements.
2-6. To mount the MCP, perform the following steps:
40752-165(1)
Effective March 2008
.688
(14.47)
C MCP
L
Handle
.250-20
(M6-1.0) Tap
(4 Holes)
C MCP
L
Handle
1.562
(39.67)
.781
(19.84)
2.922
(74.22)
C Circuit
L
Breaker
Handle
.875
(22.22)
.350
C Circuit Breaker Handle
L
a. For individual surface mounting, drill mounting panel
using the drilling plan shown in Fig. 2-3. For deadfront
cover applications, cut out cover to correct escutcheon
dimensions. (See Fig. 2-4.)
b. If MCP includes factory- or field-installed internal
accessories, make sure that accessory wiring can be
reached with the MCP mounted.
NOTICE
Labels with accessory connection schematic dia-
grams are provided on the side of the MCP. A note
should be made of the diagrams if the labels cannot
be seen when the MCP is mounted.
c. Position MCP on mounting surface.
d. Install MCP mounting screws and washers. Tighten
screws firmly, but do not exceed 28 pound-inches (3 N.m).
!
WHEN ALUMINUM CONDUCTORS ARE USED, THE
APPLICATION OF A SUITABLE JOINT COMPOUND
IS RECOMMENDED TO REDUCE THE POSSIBILITY
OF TERMINAL OVERHEATING. TERMINAL OVER-
HEATING CAN CAUSE DAMAGE TO THE MCP.
2-7. Connect line and load conductors and accessory
leads.
2-8. If required, install interphase barriers.
2-9. If required, install terminal shield on MCP cover
with mounting screws provided.
2-10. After the MCP is installed, check all mounting
hardware and terminal connecting hardware for correct
torque loading. Torque values for line/load terminals are
given in Table 2-1 and on the MCP nameplate.
3. MANUAL OPERATION AND TRIP DEVICE
ADJUSTMENT
Manual Operation
Manual operation of the MCP is controlled by the MCP
handle and the PUSH-TO-TRIP button in the trip device.
The MCP handle has three positions, two of which are
shown on the cover with the international symbols 1/0
and raised lettering to indicate ON and OFF. On the
sliding handle barrier, ON, OFF, and trip are also shown
Page 3
CAUTION
E

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