GE Industrial Solutions Record Plus Cable Operating Mechanism: FC100, FE250 - Manual (Page 4)

Figure 4a. Installing the circuit breaker operating mechanism
on the FC breaker.
Figure 5. End view of flange and door (right end shown).
Figure 4b. Installing the circuit breaker operating
mechanism on FE breaker.
[2]
[3]
[1]
Figure 7. Underside of handle,
showing the O-ring slot.
Figure 6. Handle mechanism
mounting hole pattern.