Siemens SENTRON 3VL series - Mechanical Operating Mechanisms; Toggle Lever Operating Mechanism

Product description
3.4 Mechanical operating mechanisms
3VL IEC molded case circuit breakers
26 System Manual, 11/2013, 110 0110 - 02 DS 03
3.4
Mechanical operating mechanisms
3.4.1
Toggle lever operating mechanism
In the basic version, the 3VL molded case circuit breakers have a toggle lever as actuator,
which is also an indicator of the switching position. The "Tripped" position is also displayed in
addition to the "ON" and "OFF" positions.
The toggle lever goes to the "tripped" position when the internal trip mechanism is activated
by an overcurrent situation, e.g. overload or short-circuit, or if the Test key is operated.
Activation by an undervoltage release or shunt release will also cause the toggle lever to
move to the "Tripped" position.
The toggle lever must be returned to the "OFF/RESET" position before the molded case
circuit breaker can be activated again. This enables the internal release mechanism to be
reset. 3VL molded case circuit breakers with toggle lever operation comply with the "Network
disconnecting device" condition (5.3.2 Section c) and 5.3.3) according to DIN EN 60204-1
(VDE 0113-1) in conjunction with a locking device.
Toggle lever positions
OFF
RESET
Tripped
Toggle lever positions