Product Line:
Circuit Breakers

Resolution:
There are some Schneider Electric circuit breakers that may be used on a 400 Hz system, but rerating of the breaker will be required. Data Bulletin 0100DB0101, "Determining Current Carrying Capacity in Special Applications" shows the applicable circuit breakers, and explains how to rerate them. Here is the link to the bulletin:

Released for: Schneider Electric USA