Siemens UL 489 - Installing a Bell Alarm Cover Key Lock

15 – 14
15.1.4 Installing a Bell Alarm cover key lock
When the key is removed, the cover cannot be removed and the Bell Alarm cannot be reset.
(1) Cover with safety lock
(2) Trip unit
Locking
Key lock Manufacturer Catalog No.
Bell Alarm and open fuse lockout key lock
ETU745
...
ETU748
WLTUSC55
ETU776 WLTUSC76
Knock out
1
Push outwards, not inward.
3
2
(1)
(2)
(1)
1
2
Withdraw key