Mitsubishi Electric MELSERVO-J4 series Instruction Manual page 503

APPENDIX
(b) Selection example of MCCB and fuse
When a servo amplifier is protected by T class fuses or circuit breaker having an interrupting rating
not less than 300 A effective value and 240 V maximum, use T class fuses or molded-case circuit
breaker (UL489 Listed MCCB) as the following table. The T class fuses and molded-case circuit
breakers in the table are selected examples based on rated I/O of the servo amplifiers. When you
select a smaller capacity servo motor to connect it to the servo amplifier, you can also use smaller
capacity T class fuses or molded-case circuit breaker than ones in the table. For selecting ones
other than Class T fuses and molded-case circuit breakers below, refer to section 11.10.
1) 200 V class
Servo amplifier
MR-J4-10_/MR-J4-20_/MR-J4-40_/MR-J4-60_/MR-J4-70_/
MR-J4W2-22B
MR-J4-60_ (Note)/MR-J4-70_ (Note)/MR-J4-100_/
MR-J4W2-22B (Note)/MR-J4W2-44B/MR-J4W2-77B/
MR-J4W3-222B/MR-J4W3-444B
MR-J4-200_/MR-J4W2-44B (Note)/MR-J4W2-1010B
MR-J4-350_/MR-J4W2-77B (Note)/MR-J4W3-444B (Note)
MR-J4-500_
MR-J4-700_
MR-J4-11K_
MR-J4-15K_
MR-J4-22K_
Note. For 1-phase 200 V AC power input
2) 400 V class
Servo amplifier
MR-J4-60_4
MR-J4-100_4
MR-J4-200_4
MR-J4-350_4
MR-J4-500_4
MR-J4-700_4
MR-J4-11K_4
MR-J4-15K_4
MR-J4-22K_4
3) 100 V class
Servo amplifier
MR-J4-10_1/MR-J4-20_1/MR-J4-40_1
(c) Power supply
This servo amplifier can be supplied from star-connected supply with grounded neutral point of
overvoltage category III set forth in IEC/EN 60664-1. However, when you use the neutral point for
single phase supply, a reinforced insulating transformer is required in the power input section. For
the interface power supply, use an external 24 V DC power supply with reinforced insulation on I/O
terminals.
Molded-case circuit breaker (240 V AC)
NF50-SVFU-5A (50 A frame 5 A)
NF50-SVFU-10A (50 A frame 10 A)
NF50-SVFU-15A (50 A frame 15 A)
NF50-SVFU-20A (50 A frame 20 A)
NF50-SVFU-30A (50 A frame 30 A)
NF50-SVFU-40A (50 A frame 40 A)
NF100-CVFU-60A (100 A frame 60 A)
NF100-CVFU-80A (100 A frame 80 A)
NF225-CWU-125A (225 A frame 125 A)
Molded-case circuit breaker (480 V AC)
NF100-HRU-5A (100 A frame 5 A)
NF100-HRU-5A (100 A frame 5 A)
NF100-HRU-10A (100 A frame 10 A)
NF100-HRU-10A (100 A frame 10 A)
NF100-HRU-15A (100 A frame 15 A)
NF100-HRU-20A (100 A frame 20 A)
NF100-HRU-30A (100 A frame 30 A)
NF100-HRU-40A (100 A frame 40 A)
NF100-HRU-60A (100 A frame 60 A)
Molded-case circuit breaker (120 V AC)
NV50-SVFU-15A (50 A frame 15 A)
App. - 6
Fuse (300 V)
10 A
15 A
30 A
40 A
60 A
80 A
125 A
150 A
300 A
Fuse (600 V)
10 A
10 A
15 A
20 A
30 A
40 A
60 A
80 A
125 A
Fuse (300 V)
20 A