Siemens SENTRON 3WA1 - Page 533

Integration in power distribution equipment
7.4 Requirement according to IEC 61439
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
531
• CubicleBUS
2
connection
• 24 V DC connection
New wiring is necessary for the following electrical accessory components (connection
via secondary disconnect terminal blocks X7 and X8):
• First trip alarm switch
• Second trip alarm switch
• External voltage transformer
• External current sensors for the neutral conductor
• External ground fault transformer
• Remote trip alarm reset coil
• Local electric close
• Spring charged signaling switch
You can find the new wiring in Chapter Circuit diagrams (Page 417).
Note
Changed performance data for shunt trips and closing coils
The performance data of shunt trips (ST) and closing coils (CC) have changed.
When performing a retrofit from 3WL to 3WA, check the technical
specifications
regarding the supply of these auxiliary circuits (see tables below) as well as the function
of the shunt trips (ST) and closing coils (CC).
Closing coil / shunt trip 100% OP
AC / DC
[V]
3WL article
number
13th digit
or
3WL article
number
14th digit
or
3WL article
number
15th digit
or
3WL circuit
breaker
Z option
Closing
power
[W]
Operation
al
power
[W]
CC (Y1)
100% OP
ST (F1)
100% OP
ST2 (F2)
100% OP
CC (Y1)
100% OP
24
B
B
M21
40
8
30
C
C
M22
48
D
D
M23
60
E
E
M24
110
2, 5
F
F
M25
220
3, 4
G
G
M26