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10 OPTIONS AND PERIPHERAL EQUIPMENT
10.3 Molded-case circuit breakers, fuses, magnetic contactors
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, fuse, etc.) to protect the branch circuit. The following
table lists the selection of overcurrent protection devices (molded-case circuit breaker, fuse, etc.) that are connected only to
the converter unit. When crossing over the wiring of the control circuit power supply, refer to the drive unit/servo amplifier
user's manual and instruction manual.
*1 To comply with the IEC/EN/UL/CSA standards, refer to "MR-CV_ Instructions and Cautions for Safe Use of AC Servos (IB(NA)-
0300228)".
Converter unit
Molded-case circuit breaker
Fuse (Class T)
Fuse (Class K5)
Frame, rated current
Voltage AC
[V]
Current [A]
Voltage AC
[V]
Current [A]
Voltage AC
[V]
MR-CV11K
MR-CV18K
MR-CV30K
MR-CV37K
MR-CV45K
MR-CV55K
30 A frame 5 A
240
1
300
1
250
MR-CV11K4
MR-CV18K4
MR-CV30K4
MR-CV37K4
MR-CV45K4
MR-CV55K4
MR-CV75K4
30 A frame 5 A
480
1
600
1
600