Siemens SENTRON 3WL10 Series Manual page 101

Locking mechanism to prevent opening, direct / Bowden cable
These accessories prevent the control cabinet door from being opened in the following
cases:
● Fixed breaker: The circuit breaker is in the CLOSED switch position.
● Withdrawable breaker: The circuit breaker is in the CONNECT guide frame position and
the CLOSED switch position.
The mechanical interlocks and locking devices must not be used together with the following
accessories:
● Auxiliary switch AUX 15Q
● Withdrawable breaker: Direct locking mechanism to prevent opening of the control
cabinet door
If Bowden cables are used, the maximum length is 2 m.
The door interlocking also locks out the open circuit breaker when the control cabinet door is
open.
Covers
Door sealing frame
To enable operation of the circuit breaker when a door interlocking is installed, a cutout must
be provided in the control cabinet door. With use of a cover frame, this cutout has a pleasant
appearance and achieves the higher degree of protection IP30.
The cover frame is available in two versions:
● Fixed breaker (top left in the figure)
● Withdrawable breaker (top right in the figure)
Air circuit breaker 3WL10
Manual, 11/2017, L1V30499596002-01
Accessories
3.4 External accessories
99