GE Industrial Solutions EntelliGuard E Circuit Breaker User Manual

Page 25

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Then use this as a pivot and ensure that all four tabs lock in
place (Fig. 7.6).
Figure 7.6. Carriage Position Switch Location

CLUSTERS (PRIMARY DISCONNECT FINGERS)
Clusters are the main isolating contacts which are installed
on the rear terminals on the withdrawable circuit breaker.
Cluster contacts may be easily and quickly removed and
replaced using cluster pliers (Figs. 7.7 and 7.8).

Figure 7.7. Clusters

Figure 7.8. Cluster Pliers

Clusters are mounted vertically through cluster pads for
different frame sizes. The slot is provided on the terminals
for locking the clusters. For higher current and short circuit
ratings, the clusters are assembled in parallel.

MECHANICAL BELL ALARM CONTACT INSTALLATION
1. Remove the front cover.

2. Remove the trip unit.

3. Install the mechanical trip alarm as shown in Fig. 7.9.

Figure 7.9. Mechanical Trip Alarm

4. Connect the wires via the plug connectors to the

respective locations of the secondary isolating

contacts A33, A34 and A35 (Fig. 7.10).

Figure 7.10. Plug Connector Location

5. Replace the front cover.

6. Connect the wires via the plug connectors to the

respective locations of the secondary disconnect

contacts A33, A34 and A35.

7. Replace the front cover.

REJECTION FEATURE
This factory-installed, pin and gate device prevents the
insertion of a circuit breaker into a cassette if the nominal
rating of the breaker is incompatible with that of the
cassette and its ancillary equipment.

Figure 7.11. Rejection Feature

A Pin block assembly

Fig. 7.12 shows the corresponding restrainer assembly
mounted on the cassette. There are two of these assemblies,
one on each side of the cassette and the breaker.

Figure 7.12 Corresponding Restrainer

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