{}

Our Brands

Impact-Company-Logo-English Black-01-177x54

Welcome to the Schneider Electric Website

Welcome to our website.
How can we help you today?
MCB selection consideration for 400Hz.

Depending on the technologies used, modular circuit breakers designed for 50/60 Hz can be used at 400 Hz.

To choose the performance of a modular circuit breaker:

->do not take any thermal derating into account (In at 400 Hz is equivalent to In at 50 Hz).

->increase the magnetic tripping threshold, according to the table attached below.

->check that the short-circuit current on the installation is less than the breaking capacity of the circuit breaker. The breaking capacity of the circuit breakers at a frequency of 400 Hz is the same as at frequencies of 50/60 Hz. This characteristic is generally complied with, due to the fact that the short-circuit current of a 400 Hz

generator is relatively low. In most cases, the generator Isc does not exceed four times the rated current.

Schneider Electric India

Attachment(s)
derating chart.JPG.jpg [25.8 KB]
Explore more
Range:
Articles that might be helpful Users group

Discuss this topic with experts

Visit our Community for first-hand insights from experts and peers on this topic and more.
Explore more
Range: