Mitsubishi Electric A800 Plus Instruction Manual page 18

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.
• 400 V class
Motor output Applicable
(kW) converter model
∗1
315 FR-CC2-H315K
355 FR-CC2-H355K
400 FR-CC2-H400K
450 FR-CC2-H450K
500 FR-CC2-H500K
560 FR-CC2-H560K
630 FR-CC2-H630K
∗1 Assumes the use of a Mitsubishi Electric 4-pole standard motor with the power supply voltage
of 400 VAC 50 Hz.
∗2
Select an MCCB according to the power supply capacity.
Install one MCCB per converter.
(For the use in the United States or Canada, refer to
∗3
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 JEM 1038-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 JEM 1038-AC-3 class rated current.
NOTE
• The above shows a selection example for the ND rating. For selecting the SLD rating, LD rating, SND rating, or HD rating,
refer to the Technical News (MF-X-130) contained in the enclosed CD-ROM.
• When the converter unit capacity is larger than the motor capacity, select an MCCB and a magnetic contactor according to
the converter unit model, and select cables and reactors according to the motor output.
• 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.
Molded case circuit breaker (MCCB)
earth leakage circuit breaker (ELB) (NF, NV type)
700 A
800 A
900 A
1000 A
1200 A
1500 A
2000 A
page 120 to select an appropriate fuse.)
Peripheral devices
or Input-side magnetic
∗2
contactor
S-N600
S-N600
S-N800
1000 A rated product
1000 A rated product
1200 A rated product
1400 A rated product
MCCB Converter unit
MCCB Converter unit
INSTALLATION AND WIRING
∗3
INV M
INV M
2
17