GE Industrial Solutions ProTrip Conversion Kits AK-15, AK-25, and AKU-25 - Manual (Page 9)

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Figure 9. New flux shifter installed on the right side of the
breaker mechanism (shown in the reassembled breaker).
Figure 10. Mounting and adjusting the flux shifter shown
from the right side of the mechanism.
5. When the flux shifter and its trip paddle are installed
and the front and back frames are reassembled, the
flux shifter must be adjusted as follows:
a. Make sure that the breaker mechanism is OPEN,
then charge the closing springs with the charging
handle.
b. Set the gap between the trip paddle and the end
of the flux shifter trip rod, as shown in Figure 10.
Use a 0.10-inch rod as a gage. To make the
adjustment, loosen the jam nut, then turn the
adjusting nut as necessary. Be sure to relock the
adjustment with the jam nut.
6. Optional test – The flux shifter may be tested by
closing the breaker and applying a 9 Vdc power
source to the flux shifter leads (the red wire is
positive). The breaker should trip.
Figure 11. Flux shifter as installed on the breaker.