GE Industrial Solutions ProTrip Conversion Kits AK-50, AKU-50, AKS-50, AKT-50, AK-75, and AK-100 - Manual (Page 9)

Installing the Trip Unit Mounting Bracket
The new ProTrip trip unit mounts to the left side of the
front channel. A mounting bracket is shock--mounted to a
plate that is assembled to the front channel.
EC or Power Sensor Trip System
1. The holes for the new mounting plate may have to be
added to the front channel. The drill pattern is shown
in Figure 11, with a full-size template in the
Appendix. Tap the holes for
1 / 4 -20 screws.
2. Attach the new mounting plate, as shown in Figure
12, with two short 1 / 4 -20 screws and lock washers on
the top and the single long 1 / 4 -20 screw and lock
washer on the bottom. Be sure to insert the spacer
between the mounting plate and the breaker channel,
as shown.
3. Attach the trip unit mounting bracket to the plate with
two screws, lock washers, and flat washers, as
shown in Figure 13.
ECS or SST Trip System
Remove the existing mounting plate and bracket. Install
the new mounting plate and bracket, using the holes
closest to the front of the breaker, as described in steps 2
and 3 above.
If the manual indicator assembly busing on AK-50
manual breakers interferes with the mounting bracket
installation, then the bracket must be modified. Cut off a
3/4 x 11/2 inch section from the right front of the plate to
provide clearance.
Figure 11. Mounting hole drill pattern for the trip unit
mounting plate.
Figure 12. Trip unit mounting plate attached to the
breaker front channel.
Figure 13. Trip unit mounting bracket attached to the
mounting plate.
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