Mr-J3W Series, No-Fuse Breakers, Fuses, Magnetic Contactors - Mitsubishi Electric MELSERVO-J3 Series Manual

Part 7: 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_
MR-J4-20_
MR-J4-40_
MR-J4-60_
MR-J4-70_
MR-J4-100_
MR-J4-200_ 30 A frame 5 A
MR-J4-350_
MR-J4-500_
MR-J4-700_
MR-J4-11K_
MR-J4-15K_
MR-J4-22K_
MR-J4-60_4
MR-J4-100_4
MR-J4-200_4
MR-J4-350_4
MR-J4-500_4 30 A frame 5 A
MR-J4-700_4
MR-J4-11K_4
MR-J4-15K_4
MR-J4-22K_4
MR-J4-10_1
MR-J4-20_1 30 A frame 5 A
MR-J4-40_1
Note In order for the servo amplifier to comply with the UL/CSA standard, see the Servo Amplifier Instruction Manual.

4.3.3 MR-J3W series, no-fuse breakers, fuses, magnetic contactors

Always use one molded-case circuit breaker and one magnetic contactor with one servo amplifier. When
using a fuse instead of the molded-case circuit breaker, use the one having the specifications given in this
section.
When using two different types of motors in combination from a rotary servo motor, a select a molded-case
circuit breaker, a fuse or a magnetic contactor temporarily assuming that the same type of the motors are
used for both axes. After selecting for the two types, use the larger molded-case circuit breaker, fuse or
magnetic contactor.
Total output of rotary servo motor
300W or less
From over 300W to 600W
From over 600W to 1kW
From over 1kW to 2.0kW
Note 1. In order for the servo amplifier to comply with the UL/CSA standard, see the applicable "Servo Amplifier Instruction
Manual".
2. Use a magnetic contactor with an operation delay time (interval between current being applied to the coil until closure of
contacts) of 80 ms or less.
Molded-case circuit breaker, fuse
Voltage AC [V] Current [A]
240
480
240
Molded-case circuit breaker
Current
Not using power Using power
factor improving factor improving
AC reactor AC reactor
30A frame 5A 30A frame 5A
30A frame 10A 30A frame 10A
30A frame 15A 30A frame 10A
30A frame 20A 30A frame 15A
7 - 25
Fuse (Class T)
Voltage AC [V]
1 300
1 600
1 300
Voltage (Note 1)
AC [V] Class
240 K5
Fuse (Class K5)
Current [A] Voltage AC [V]
1 250
1 600
1 250
Fuse
(Note 2)
Current Voltage Magnetic
[A] AC [V] contactor
15
20 S-N10
300
20
30 S-N18