Mitsubishi Electric FR-A700 Instruction Manual page 42

Inverter and peripheral devices
Selections for use of the Mitsubishi 4-pole standard motor with power supply voltage of 400V
AC 50Hz.
Select the MCCB according to the inverter power supply capacity. Install one MCCB per
inverter.
The places with "xx" refer to the breaking capacity in case of short circuit. The correct
selection must be done depending on the design of the power input wiring.
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 stop during
motor driving, the electrical durability is 25 times.
When using the MC for emergancy stop during motor driving or using on the motor side
during commercial-power supply operation, select the MC with class AC-3 rated current for
the motor rated current.
When the breaker on the inverter primary side trips, check for the wiring fault (short circuit),
damage to internal parts of the inverter, etc. Identify the cause of the trip, then remove the
cause and power on the breaker.
The supplied DC reactor has to be installed.
3 - 4
M
MCCB A700
3~
M
MCCB A700
3~
Fig. 3-2:
Installation of the breakers
Wiring
I001332E