Removing the Existing Trip Devices
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
3.Remove and discard the four 516"
AK-50 & AKS-50 Breakers with SST Trip Systems
Remove the existing SST phase sensors in prepara- tion for installing the new sensors.
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.
Coil Mounting
Bolts
Cover Screws
and Clamps
Figure 16. Existing EC trip devices before removal.
Figure 17. Removal of EC trip devices.
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