Siemens SION 3AE6113-0, Operating Instructions Manual

Page: 27 / 60

Description
9229 0020 176 0B 27
2019-04-02
Key-operated interlock 3AX1437 (optional)
54.5 Position switch -S5
56.2 OPEN pushbutton
59.3 Key-operated interlock (optional)
If the vacuum circuit-breaker is equipped with a key-operated interlock, it is possible
to mechanically prevent both manual closing and electrical closing (position switch
-S5).
To lock the vacuum circuit-breaker, press and hold the OPEN pushbutton until the
key is in vertical position, which is the interlocked position.
The key can be pulled out in the locked position.
Note: The vacuum circuit-breaker with key-operated interlock is interlocked in as-
delivered condition and must be unlocked for test operations and commissioning. To
unlock, insert the key and turn it to the horizontal position.
Fig. 29 Key-operated interlock (59.3) Fig. 30 Position switch -S5 (54.5)