E6582175
J-3
10
Selection of wiring devices
Voltage
class
Applicable
motor
(kW)
Input current (A)
Molded case circuit breaker (MCCB)
Earth leakage circuit breaker (ELCB)
Magnetic contactor (MC)
Note 2) Note 3)
Without
DCL
With DCL
Rated current (A) Rated current (A)
Without DCL With DCL Without DCL With DCL
3 phase
240V
class
0.4 3.6 1.8 5 5 20 20
0.75 6.3 3.4 10 5 20 20
1.5 11.1 6.5 15 10 20 20
2.2 14.9 9.2 20 15 20 20
4.0 23.8 15.9 30 20 32 20
5.5 35.6 21.5 50 30 50 32
7.5 46.1 28.9 60 40 60 32
11 63.1 41.5 100 60 80 50
15 82.1 55.7 125 75 100 60
18.5 89.1 70.0 125 100 100 80
1 phase
240V
class
0.2 3.4 2.0 5 5 20 20
0.4 5.9 4.0 10 5 20 20
0.75 10.0 7.6 15 10 20 20
1.5 17.8 14.6 30 20 32 20
2.2 24.0 20.1 30 30 32 32
3.0 24.0 23.6 30 30 32 32
3 phase
500V
class
Note 6)
0.4 2.1 0.9 5 5 20 20
0.75 3.6 1.8 5 5 20 20
1.5 6.4 3.4 10 5 20 20
2.2 8.8 4.8 15 10 20 20
4.0 13.7 8.3 20 15 20 20
5.5 20.7 11.2 30 15 32 20
7.5 26.6 15.1 40 20 32 20
11 36.6 21.7 50 30 50 32
15 47.7 29.0 60 40 60 32
18.5 52.7 36.3 75 50 60 50
The recommended molded case circuit breaker (MCCB) must be connected to primary side of each inverter to
protect the wiring system.
Note 1: Selections for use the Toshiba 4-pole standard motor with power supply voltage of 200V/ 400 - 50Hz.
Note 2: Be sure to attach a surge absorber to the exciting coil of the relay and the magnetic contactor.
Note 3: When using the auxiliary contacts 2a of the magnetic contactor MC for the control circuit, connect the
contacts 2a in parallel to increase reliability.
Note 4: When a motor is driven by commercial power supply using commercial power supply / inverter switching
circuit, use a magnetic contactor appropriated AC-3 class the motor rated current.
Note 5: Select an MCCB with a current breaking rating appropriate to the capacity of the power supply, because
short-circuit currents vary greatly depending on the capacity of the power supply and the condition of the
wiring system. The MCCB, MC and ELCB in this table were selected, on the assumption that a power
supply with a normal capacity would be used.
Note 6: For the operation and control circuits, regulate the voltage at 200V to 240V with a step-down transformer
for 500V class.
Note 7: In case of aul=2 setting, be sure to select the wiring device for 1 rating up motor.
Note 8: Regarding influence of leakage current, refer to section 1.4.3.
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