GE AK-50 Removing the Existing Trip Devices

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Removing the Existing Trip Devices
AK-50 & AKS-50 Breakers with EC or Power Sensor
Trip Systems
1. Remove and discard the two screws at the base
of each trip device, as shown in Figure 16. Dis-
card the metal mounting brackets.
2. Remove and discard the small Philips-head
screw at the top of each trip device.
3. Remove and discard the four 516" Allen-head
bolts securing each trip coil. The coil can then be
lifted off and removed. Figure 17 shows one trip
completely removed, one with the cover
removed, and one still in place.
AK-50 & AKS-50 Breakers with SST Trip Systems
Remove the existing SST phase sensors in prepara-
tion for installing the new sensors.
AK-75 & AK-100 Breakers with EC or Power Sensor
Trip Systems
Remove the existing trip devices and harnesses and
discard.
AK-75 & AK-100 Breakers with SST Trip Systems
The new ProTrip phase sensors are visually identical
to the SST sensors. Remove the existing sensors and
discard.
Figure 16. Existing EC trip devices before removal.
Figure 17. Removal of EC trip devices.
Cover Screws
and Clamps
Coil Mounting
Bolts