Siemens SENTRON 3WL10 Series Manual page 23

Design of the 3WL10 air circuit breaker
The 3WL10 air circuit breaker contains the contacts (3 or 4 poles), the switching mechanism,
and the internal accessories. Each of the poles is contained in a separate plastic enclosure
and consists of the interrupting contact system and a current transformer.
Main components of the 3WL10 air circuit breaker
①
②
③
④
⑤
⑥
⑦
⑧
Air circuit breaker 3WL10
Manual, 11/2017, L1V30499596002-01
Area with front / rear connections
Auxiliary conductor terminal system
Electronic trip unit (ETU)
Switch position indicator contacts OPEN / CLOSED
"Mechanical ON" pushbutton
"Mechanical OFF" pushbutton
Status indicator of spring energy store CHARGED / DISCHARGED
Manual lever for charging the spring energy store
Description
2.3 Basic unit
21