GE Industrial Solutions ProTrip Conversion Kits AK-50, AKU-50, AKS-50, AKT-50, AK-75, and AK-100 - Manual (Page 15)

SECTION 6 FOUR-WIRE GROUND
FAULT OPTION
The ground fault option for four-wire installations requires
the installation of an additional current sensor on the
neutral bus in the equipment. The sensor is connected to
the trip unit through the connector provided in the wiring
harness.
Installing the Fourth-Wire Disconnect
AK-50 & AKS-50 Stationary Breakers
The fourth-wire disconnect for stationary breakers
consists of a terminal board mounted to the lower front
channel, as shown in Figure 24.
• If the terminal board is already present on the
breaker, just replace the control harness. Maintain
the following color code: white wire to common,
black wire to the tap.
• If the terminal board must be added, mount it as
shown in Figure 24. The mounting holes may have
to be added to the front channel.
Figure 24. Fourth-wire terminal board installation on AK-
50 & AKS-50 stationary breakers.
15