Справочник Пользователя для Mitsubishi Electronics MDS-D-SPJ3

6 - 4

Always select the circuit protector and contactor properly, and install them to each drive unit to prevent disasters.

Calculate a circuit protector selection current from the rated output and the nominal input voltage of the drive unit 

as in the expression below. And then select the minimum capacity circuit protector whose rated current meets the 

circuit protector selection current.

Circuit protector selection current [A] = 

(Circuit protector selection current for 200V input [A] / Nominal input voltage [V]) × 200 [V]

Option part: A circuit protector is not prepared as an NC unit accessory, so purchase the part from your 

dealer, etc.

0.3kW

0.4kW

0.75kW

1.0kW

2.0kW

3.5kW

2.5A

5A

7A

8A

10A

15A

NF30-

SW3P-5A

NF30-

SW3P-10A

NF30-

SW3P-15A

NF30-

SW3P-15A

NF30-

SW3P-20A

NF30-

SW3P-30A

5A

10A

15A

15A

20A

30A

0.75kW

2.2kW

3.7kW

5.5kW

7.5kW

11kW

6A

9A

15A

23A

31A

45A

NF30-

SW3P-15A

NF30-

SW3P-20A

NF30-

SW3P-30A

NF50-

SW3P-50A

NF100-

SW3P-60A

NF100-

SW3P-

100A

15A

20A

30A

50A

60A

100A

1. It is dangerous to share a circuit protector for multiple drive units, so do not share it. Always install 

the circuit protectors for each drive unit.

2. If the control power (L11, L21) must be protected, select according to the section "6-4-1 Circuit 

protector ".