Siemens SENTRON 3WL10 - Page 102

⑦ Leading changeover switch (S26)
⑧ Trip alarm switch (S24 - tripped by the electronic trip units)
⑨ Spring charged signaling switch (S21)
Position signaling switch PSS for guide frame
The position auxiliary contacts are used in the withdrawable breaker and signal whether the
circuit breaker is in the racking position DISCONNECT, Test, or CONNECT.
Breaker position Auxiliary contacts Main circuit connection
CONNECT: Inserted Connected Connected
TEST: Test position Connected Isolated
DISCON (DISCONNECT): Re‐
moved
Disconnected Isolated
The position signaling switches are always installed in the guide frame. However, the user
can modify 24 V digital signals in the device con󹪝guration to meet the requirements for small
loads, e.g. for PLC connection.
Con󹪝guration Position auxiliary contacts - PSS
6 auxiliary contacts
Standard contact 400 V •
Contact for digital signal 24 V •
 Standard contact Contact for digital signal
Type Changeover contact Changeover contact
Smallest load 100 mA at 24 V 1 mA at 5 V
Breaking capacity DC 24 V — 0.1 A
125 V 0.3 A at 0 ms —
250 V 0.15 A at 0 ms —
AC 250 V 5 A at cosφ 1 —
5 A at cosφ 0.7 —
5 A at cosφ 0.3 —
400 V 3 A at cosφ 1 —
2 A at cosφ 0.7 —
1 A at cosφ 0.3 —
Signaling diagram of the position signaling switch PSS:
Accessories
3.2Electromechanical accessories
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Equipment Manual, 10/2023, L1V30499596002-03 101