Mitsubishi Electric C Series Handling And Maintenance page 39

1Screw stud connection
Assembling procedure (A)
NF30-CS, MB30-CS, NV30-CS
NF32-SW, NF63-CW, NF63-SW, NF63-HW
Model to be
MB30-SW, MB50-CW, MB50-SW
assembled
NV32-SW, NV63-CW, NV63-SW, NV63-HW
NF63-ZCW, NF-ZSW, NF63-ZHW
1. Attach the stud onto the circuit breaker.
Stud fastening
Insulation
screw A
base
Circuit
(Mould)
breaker
Clean this contact face.
2. Mount onto the panel.
(Note)
Tap the panel referring
to the catalog.
3. Connect the connection conductor.
Connection
conductor
Washer
(Brass tip plated)
Nut C
(Brass, tin plated)
37
Spring
Nut C washer
washer
Conductor
fastening
nut B
Screw B
Circuit breaker
Panel
Pan head screw for fastening
(M4✕0.7✕35)
Fasten nut B
(Note)
Hold nut C with a wrench.
Be careful so as not to
apply unreasonable force
to the stud.
Nut B
20N m
•
200N (20kg)
Tightening torque for screw stud
Type (Ampere frame)
Stud fastening screw A
<Nominal diameter of screw>
30A frame
63A frame
Generally, about 20kg power
is generated by arm. So,
tightening torque comes to
20N m by grip-ping illustrated
•
position.
Tightening torque N·m
Conductor fastening nut B
<Nominal diameter of screw>
1 <M4> 2 <M6>