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Circuit Breaker and Fuse Sizes

The inverter’s connections to input power for 400V class units must include UL Listed inverse time circuit breakers with 600V rating, or UL Listed fuses as shown in the table below.

Input

Motor Output

Inverter Model

Fuse (A)

Voltage

kW

HP

(UL-rated class J, 600V)

 

 

0.4

1/2

X200-004HFE/HFU

3

 

0.75

1

X200-007HFE/HFU

6

Three-

1.5

2

X200-015HFE/HFU

10

2.2

3

X200-022HFE/HFU

10

Phase

3.0

4

X200-030HFE

15

400V

4.0

5

X200-040HFE/HFU

15

 

 

 

 

 

 

 

 

 

 

 

Motor Overload Protection

Hitachi X200 inverters provide solid state motor overload protection, which depends on the proper setting of the following parameters:

B012 “electronic overload protection”

B212 “electronic overload protection, 2nd motor”

Set the rated current [Amperes] of the motor(s) with the above parameters. The setting range is 0.2 * rated current to 1.0 * rated current.

WARNING: When two or more motors are connected to the inverter, they cannot be protected by the electronic overload protection. Install an external thermal relay on each motor.

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Hitachi X200 Series instruction manual Circuit Breaker and Fuse Sizes, Motor Overload Protection