Peripheral devices
14
INSTALLATION AND WIRING
Selecting the breaker/magnetic contactor
Check the model of the inverter and the converter unit you purchased. Appropriate peripheral devices must be selected
according to the capacity.
Refer to the table below to prepare appropriate peripheral devices.
• One circuit breaker and one magnetic contactor in total in a system
• One circuit breaker and one magnetic contactor per converter unit
• When the breaker on the converter unit's input side trips, check for the wiring fault (short circuit), damage to internal parts of
the inverter and the converter unit, etc. The cause of the trip must be identified and removed before turning ON the power of
the breaker.
Motor
capacity
(kW)
Number of
units
Converter unit
FR-CC2-[ ]-P
Molded case circuit breaker (MCCB)
or earth leakage circuit breaker (ELB)
(type NF or NV)
Input-side magnetic
contactor
630 2 H400K 1500 A 1300 A rated product
710 2 H450K 1600 A 1400 A rated product
800 2 H500K 1800 A 1600 A rated product
900 2 H560K 2100 A
1800 A rated product
945 3 H400K 2200 A
1900 A rated product
1065 3 H450K 2400 A
2100 A rated product
1200 3 H500K 2700 A
2400 A rated product
1350 3 H560K 3100 A
2700 A rated product
The motor output indicates the output power of a 4-pole motor at 400 VAC 50 Hz driven by all of the inverters in parallel connection.
Select an MCCB according to the power supply capacity.
For the use in the United States or Canada, provide the appropriate UL and cUL listed fuse that is suitable for branch circuit protection. (Refer to
page 109.)
The magnetic contactor is selected based on the AC-1 class. The electrical durability of magnetic contactor is 500,000 times. When the
magnetic contactor is used for emergency stops during motor driving, the electrical durability is 25 times.
If using an MC for emergency stop during driving the motor, select an MC regarding the converter unit input side current as JEM1038-AC-3 class
rated current. When using an MC on the inverter output side for commercial-power supply operation switching using a general-purpose motor,
select an MC regarding the rated motor current as JEM1038-AC-3 class rated current.
An air circuit breaker is also applicable in a system in which a 2000 A breaker or higher is applicable.
Motor
output
(kW)
Number of
units
Applicable
converter unit
FR-CC2-[ ]-P
Molded case circuit breaker (MCCB)
(NF type)
Input-side magnetic
contactor
630 2 H400K 900 A S-N800
710 2 H450K 1000 A 1000 A rated product
800 2 H500K 1200 A 1000 A rated product
900 2 H560K 1500 A 1200 A rated product
945 3 H400K 900 A S-N800
1065 3 H450K 1000 A 1000 A rated product
1200 3 H500K 1200 A 1000 A rated product
1350 3 H560K 1500 A 1200 A rated product
The motor output indicates the output power of a 4-pole motor at 400 VAC 50 Hz driven by all of the inverters in parallel connection.
Select an MCCB according to the power supply capacity.
For the use in the United States or Canada, provide the appropriate UL and cUL listed fuse that is suitable for branch circuit protection. (Refer to
page 109.)
The magnetic contactor is selected based on the AC-1 class. The electrical durability of magnetic contactor is 500,000 times. When the
magnetic contactor is used for emergency stops during motor driving, the electrical durability is 25 times.
If using an MC for emergency stop during driving the motor, select an MC regarding the converter unit input side current as JEM1038-AC-3 class
rated current. When using an MC on the inverter output side for commercial-power supply operation switching using a general-purpose motor,
select an MC regarding the rated motor current as JEM1038-AC-3 class rated current.
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