Why would an NW frame breaker read half the expected current?

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Issue:
During secondary injection, the breaker is only indicating half of the injected current.

Product Line:
NW Frame Breakers

Environment:
FFTK testing a NW breaker.

Resolution:
This will happen when a W frame (standard width) breaker is being tested as a Y frame (double-wide) breaker. The FFTK defaults to testing as a Y frame.
To get a good test, on the setup screen where you select breaker type, choose NW40b or test as an IEC breaker. This will force it to recognize it as a W frame and test it correctly.