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I am curious to know if anyone can provide me with a formula or a rule

that sizes the circuit breaker so the circuit is protected during

inrush currents. The supply is 415VAC, 50Hz. The current comming from

the buildings main distribution panel is around 60 Amps. The

parameters on the motor nameplate are as followed:

415VAC

FLA=37.5 amps

Freq=50Hz

RPM=980

The VFD is a 40 HP AC drive.

Any help would be appreciated?

Kind Regards,

vsdguy