Mitsubishi Electric FR-HC2 Series Manual page 27

High power factor converter

Instruction manual (203 pages)

Circuit breakers and magnetic contactors

Check the model of the converter and select peripheral devices according to the capacity. Refer to the table below to prepare

appropriate peripheral devices.

200V class

Converter Model

FR-HC2-7.5K

FR-HC2-15K

FR-HC2-30K

FR-HC2-55K

FR-HC2-75K

400V class

Converter Model

FR-HC2-H7.5K

FR-HC2-H15K

FR-HC2-H30K

FR-HC2-H55K

FR-HC2-H75K

FR-HC2-H110K

FR-HC2-H160K

FR-HC2-H220K

FR-HC2-H280K

FR-HC2-H400K

FR-HC2-H560K



Select an NFB according to the power supply capacity.

Install one NFB per converter.



For the use in the United States or Canada, provide the appropriate UL and cUL listed fuse that is

suitable for branch circuit protection. (Refer to the Instruction Manual)



Magnetic contactor is selected based on the AC-1 class.The electrical durability of magnetic contactor is 100,000 times.When the magnetic contactor is

used for emergency stop during motor driving, the electrical durability is 25 times.

When using the MC for emergency 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.

NOTE

 When the MCCB on the converter input side trips, check for the wiring fault (short circuit), damage to internal parts of

the converter, etc. Identify the cause of the trip, then remove the cause and power ON the breaker.

 Configure a system where the magnetic contactor at the converter input side shuts off the power supply at a failure of

the converter or the connected inverter. (The converter does not shut off the power supply by itself.) Failure to do so

may overheat and burn the resistors in the converter and the connected inverter.

Moulded Case Circuit Breaker (MCCB) 

or Earth Leakage Circuit Breaker (ELB) 

(NF, NV type)

50A

75A