Siemens SENTRON 3WA1 - Racking the Circuit Breaker in the Guide Frame

Description
2.2 Circuit breakers and non-automatic circuit breakers
3WA1 air circuit breaker
42 Equipment Manual, 02/2023, 92310000002-06
2.2.4.3 Racking the circuit breaker in the guide frame
The withdrawable circuit breaker can be moved to three positions by means of the
racking handle. The current position is indicated by the position indicator on the circuit
breaker, see Chapter Circuit breakers (Page 28).
Depending on the position, the main and auxiliary contacts are connected or isolated:
Position
Pictogram
display
Main circuit
connection
Auxiliary
circuits
Shutter
Comment
CONNECT
(connected
position)
CONNECT
Connected
Connected
Open
TEST
(test
position)
TEST
Disconnected
and isolated
Connected
Closed
Disconnector
condition
fulfilled
Tests of accessories
on the auxiliary
circuit
possible
DISCONNEC
T
(disconnecte
d position)
DISCON
Disconnected
and isolated
Disconnecte
d
Closed
Removal/insertion of
the circuit breaker
possible
A signal diagram for the positions can be found in Chapter Position signaling switch
module for guide frame (Page 274).
Racking the circuit breaker
NOTICE
Material damage due to over-rotation of the racking handle
Over-rotation of the racking handle beyond its end stop can damage the racking
mechanism.
Once the end stop is reached, the racking handle must be rotated counterclockwise to
the rack-in position.