Mitsubishi Electric C Series Handling And Maintenance page 37

(2) Rear connection
Rear connection type is for wiring from back side of the
panel and terminal connection and bar connection are
applicable. Rear studs (with insulation pipe or insulation
base) are offered separately. Assembling is possible, there-
fore, by each user. For tightening torque, refer to Appen-
dix 2.
1Bar stud
Assembling procedure (A)
NF400-CW, NF400-SW, NF400-SEW,
NF400-HEW, NF400-REW, NF400-UEW(3P)
NF400-ZCW, NF400-ZSW, NF400-ZEW
NF630-CW, NF630-SW, NF630-SEW
Model of
NF630-HEW, NF630-REW
breaker to
NF630-ZCW, NF630-ZSW, NF630-ZEW
be
NV400-CW, NV400-SW, NV400-SEW,
assembled
NV400-HEW, NV400-REW
NV630-CW, NV630-SW
NV630-SEW, NV630-HEW
Size of
M8
bolt A
Tightening
20
torque
N·m
Take ±20% of the figures in the above table (tightening torque) as the
rough guide of adequate range of tightening torque.
1. Clean the stud
Circuit breaker
Clean this contact face.
2. Attach the stud to the circuit breaker.
3. Attach onto the panel.
With the attached set screws,
mount onto the panel using the
mount hole on the circuit breaker.
If the mount hole on the panel
isn't threaded, use nuts.
4. Connect the connecting conductor.
1. At connecting the conductors (bus bar,
wire etc.), be careful so that no unrea-
sonable force is applied to the stud.
2. When connected, fix (bundle) the wires
at the positon (mentioned) below.
Stud direction
Horizontal
( )
Type
100.250A frame 200mm maximum 120mm maximum
350mm maximum 200mm maximum
Others
The figures in the above table indicate distance from the top face of the panel.
In the case of bus bar connection, the distance can be somewhat longer.
35
NF400-UEW(4P)
NF800-CEW, NF800-SDW
NF800-SEW, NF800-HEW
NF800-REW, NF800-UEW
NF800-ZEW
NV800-SEW, NV800-HEW
M10
30
lnsulation base (mould)
Stud
Direction can be changed
by every 30°.
(except for NF800-UEP)
End plate
Fasten bolt A
Pan head
Panel
screw
Assemble the circuit breaker and the
insulation base and attach them
together onto the panel.
Connection
conductor
Horizontal
( )
Fasten the bolt.
For tightening torque,
refer to Appendix 2.
Stud set bolt,
Bolt A
Stud
Bolt
Not needed if mount
hole is threaded.
Assembling procedure (B)
NF125-CW, NF125-SW
NF125-HW, MB100-SW
Model to
NV125-CW, NV125-SW
be
NV125-HW, NV125-RW
assembled
Size of
M6
bolt A
Tightening
4
torque
N·m
Take ±20% of the figures in the above table (tightening torque) as the
rough guide of adequate range of tightening torque.
1. Attach the stud to the circuit breaker.
Stud fastening Circuit
bolt A breaker
2. Attach onto the panel.
Circuit breaker
Pan head screw
for fastening.
(M4✕0.7✕35)(250AF is M4✕0.7✕55)
3. Connect the connecting conductor.
Panel bottom
Circuit breaker set screw
End plate
Insulation base
Mount hole
Mount panel
Eddy current preventing
Slit (Necessary for
400AF and larger.)
Fasten bolt A with a
hexagon rod spanner
NF160-SW, NF160-HW
NF250-CW, NF250-SW
NF250-HW, MB225-SW
NF250-ZCW, NF250-ZSW
NF250-ZHW, NF50-ZEW
NV250-CW, NV250-SW
NV250-HW, NV250-SEW
NV250-HEW, NV250-RW
M6
10
lnsulation base
(Mold)
Stud
Direction can be changed
by every 45°.
Clean off this contact face.
Panel
Connection conductor
Fastening the
conductor set bolt.