Citadel 2.0 - Instruction Manual - page:
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The Citadel element incorporates a specially designed mechanical
“Block the Close”
Interlock.
The block the close engagement lever is located on the bottom of the mechanism housing
and slightly to the right of center.
“Block the Close” Interlock
- FIGURE 97
Interlocks are designed and incorporated to add
to the safe operation of the Citadel. They are not a
replacement for proper operating practices and safe,
well trained personnel.
DANGER
The “Block the Close” interlock is an option designed into the fixed mounted Citadel
element. It is not necessarily employed during the conversion process. Customers should
learn about this optional feature and its possible inclusion in any final conversion design.
When the breaker is in the open position and the “Block the Close” Interlock is raised
(engaged), this interlock will mechanically prevent the breaker from closing whether the
close signal is a manual push of the close button, an electrically initiated signal or an
inadvertent shock to the Citadel element.
NBS takes no responsibility nor warrants the interface
connections provided by any breaker conversion company
between the original breaker’s “trip free”, & “spring
discharge” systems, and those of the Citadel.
P O S I T I V E “ B L O C K T H E C L O S E ” I N T E R L O C K
Block the close
Disengaged
Block the close
Engaged (up)