Table of Contents
Advertisement
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
CONNECT: Inserted
TEST: Test position
DISCON (DISCONNECT): Re‐
moved
The position signaling switches are always installed in the guide frame. However, the user
can modify 24 V digital signals in the device configuration to meet the requirements for small
loads, e.g. for PLC connection.
Configuration
Standard contact 400 V
Contact for digital signal 24 V
Type
Smallest load
Breaking capacity
Signaling diagram of the position signaling switch PSS:
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Equipment Manual, 10/2023, L1V30499596002-03
Auxiliary contacts
Connected
Connected
Disconnected
Standard contact
Changeover contact
DC
24 V
125 V
250 V
AC
250 V
400 V
3.2 Electromechanical accessories
Main circuit connection
Position auxiliary contacts - PSS
6 auxiliary contacts
•
•
Contact for digital signal
100 mA at 24 V
—
0.3 A at 0 ms
0.15 A at 0 ms
5 A at cosφ 1
5 A at cosφ 0.7
5 A at cosφ 0.3
3 A at cosφ 1
2 A at cosφ 0.7
1 A at cosφ 0.3
Accessories
Connected
Isolated
Isolated
Changeover contact
1 mA at 5 V
0.1 A
—
—
—
—
—
—
—
—
101
Advertisement
Table of Contents
