Toshiba JK Series - Handle Interlock; Vacuum Contactor Interlock

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GENERAL DESCRIPTION
b. Handle Interlock
Two mechanical interlocks are provided to
prevent operating the switch
handle
improperly.
The first interlock prevents moving the handle
from OFF to ON unless the compartment door
is closed (Fig. 22).
The second interlock prevents the switch
handle from being moved in either direction
unless the contacts of the vacuum contactor
on the withdrawable carriage are open
(Fig. 23).
C. Vacuum Contactor Interlock
The vacuum contactor is mechanically
interlocked to prevent it from closing unless
the switch handle is in the fully ON or fully
OFF position. The interlock shown in Fig. 23
provides this function.
If the switch handle is in the intermediate
position, and a closing signal is given to the
contactor, it is mechanically prevented from
operating.
Fig.
Handle Interlock to Door
Fig. 23 Handle Interlock to Vacuum Contactor
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