Mitsubishi Electric MELSERVO-J4 Series Transition Handbook page 630

Part 9: Review on Replacement of Optional Peripheral Equipment
(2) For control circuit power supply
When the wiring for the control circuit power supply (L11, L21) is thinner than that for the main circuit
power supply (L1, L2, L3), install an overcurrent protection device (molded-case circuit breaker or fuse)
to protect the branch circuit.
Molded-case circuit breaker (Note)
Servo amplifier
Frame, rated current
MR-J4-10_(-RJ)
MR-J4-20_(-RJ)
MR-J4-40_(-RJ)
MR-J4-60_(-RJ)
MR-J4-70_(-RJ)
MR-J4-100_(-RJ)
MR-J4-200_(-RJ)
MR-J4-350_(-RJ)
MR-J4-500_(-RJ)
MR-J4-700_(-RJ)
MR-J4-11K_ (-RJ)
MR-J4-15K_(-RJ)
MR-J4-22K_(-RJ)
MR-J4-60_4(-RJ)
MR-J4-100_4(-RJ)
MR-J4-200_4(-RJ)
MR-J4-350_4(-RJ)
MR-J4-500_4(-RJ)
MR-J4-700_4(-RJ)
MR-J4-11K_4(-RJ)
MR-J4-15K_4(-RJ)
MR-J4-22K_4(-RJ)
MR-J4-10_1(-RJ)
MR-J4-20_1(-RJ)
MR-J4-40_1(-RJ)
Note. In order for the servo amplifier to comply with the UL/CSA standard, refer to the Servo Amplifier Instruction Manual.
Molded-case circuit breaker, fuse
Voltage AC [V]
30 A frame 5 A 240
30 A frame 5 A 480
30 A frame 5 A 240
Fuse (Class T)
Current [A] Voltage AC [V]
1 300
1 600
1 300
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Fuse (Class K5)
Current [A] Voltage AC [V]
1 250
1 600
1 250