Key Interlock Attachment . 3 - Westinghouse DB-50 Instructions Manual

F a g 3 2
e
Inspection
Rotate the breaker handle to the closed po­
sition. The lockout should prevent closure
of the breaker by holding the trip bar in the
trip free position.
armature in the closed position should
permit closure of the breaker . Releasing
the armature after closure should not trip
the breaker .
M aintenance
The device is non-adjustable .
open-ci rcuited coil and for loose bolts .
K E Y LOCK A T TA CHM EN T FOR FIXED
B REAKE RS
The key lock mounts on the right side of the
operating mechanism frame . (See Fig. 2 4 . )
The k e y can b e removed i n the open or
closed position of the breaker .
Inspection
Push the trip button and turn key to the
locked position. The key is then removable
and the breaker is locked in the tripped
position . Replace key and rotate to the un­
locked p osition to fre e breaker trip button .
The key is also removable in this position.
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Fig. 22 Alarm Switch Attachment - Construction Details
Holding the lockout
Check for
�lf\RM SW ITCH
M aintenance
The device is non-adjustable .
loose bolts only.
KE Y INTERLOCK
FIXED BREAKERS
The key interlock mounts on the right s ide
of the operatin g mechanism frame .
F ig. 24.) When the key interlock attachment
is furnished, the key lock attachment cannot
be supplied. In the key interlock attachment
the key cannot be
breaker is locked in the tripped position.
Inspection
Push the trip button and turn the key to the
locked position. The key is then removable
and the breaker is locked in the tripped
position. Replace the key and rotate to the
unlocked position to free the breake r trip
button. The key is not removable in this
position.
M aintenance
The device is non-adjustable .
loose s crews and nuts only.
CROSS B�R
Check for
ATTACHM E NT FOR
(See
removed unles s the
Check for