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The circuit breaker should always be OPEN when it is moved into
or out of the CONNECTED position.
Figure 3-2: Circuit Breaker Manual Rack in/out
There are two tools available to rack-in and rack-out the
circuit breakers.
The standard is the manual racking device (Figure 3-2) which
allows the operator to manually engage the circuit breaker
mechanism to change it's position.
The optional remote racking device (Figure 3-3) allows the
operator to engage the circuit breaker mechanism to change
it's position while remaining outside the arc-flash boundary.
Figure 3-3: Circuit Breaker Automatic Rack in/out
CAUTION
Although the circuit breaker compartment door may
be opened in any position, it is recommended that the
door be opened only when the circuit breaker is in the
DISCONNECTED/TEST position.
Fixed Primary Disconnect Contacts
Tubular fixed primary disconnect contacts are recessed inside
the insulated primary bushings (spouts), which are mounted on
the back plane of the circuit breaker compartment (Figure 3-4).
Figure 3-4: SecoGear Primary/Secondary Disconnects
Note: Figure 3-4 above is shown without the automatic shutters in their normal
DISCONNECT/TEST position to clearly view the Primary/Secondary Disconnects.
The primary finger clusters on the circuit breaker will
engage these contacts when the circuit breaker is racked into
the CONNECTED position.
Figure 3-5: Circuit Breaker Primary/Secondary Cluster
SecoGear – Installation, Operation and Maintenance Manual 17 of 56
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