Siemens SENTRON 3WL Reference Manual page 50

3WL Air Circuit Breakers
3WL Air Circuit Breakers/Non-Automatic Air Circuit Breakers up to 6300 A (AC)
Project planning aids
Example of an overall circuit diagram for SENTRON 3WL
(3WL1. ..–.....–4GN4–Z C11+ C22 + K07)
Manual/motorized operating mechanism with stored-energy fea-
ture with electrical ON button (option C11), with ready-to-close
signaling switch (optionl C22), with LSING solid-state release,
L1
(L+)
release
OFF
contact
ON
electr.
ON
R
-S11
P
QS
M
-F3
-Y1
mech.
ON
-S12
mech.
-F1
OFF
N
(L-)
Function diagram of
SENTRON 3WL circuit breaker
F1
F2
S20
F3
F4
M1
P
1
F5
S24
Y1
2
3
NSE0_01559c
50 Siemens · 2009
L1
(L+)
-A1
version
L
S
I
N
N
G
-F5
U<
*
N
(L-)
* Short terminals, if no N sensor
Q1
S1 & S2
S3 & S4
A1
T1
L
T2
S
I
T3
N
N
T4
G
with "UVR" undervoltage release (F3), with "ST" shunt release
(F1), with tripped signal switch (option K07), with auxiliary switch
4 NO + 4 NC.
ETU
-S2 -S3
-Q1 -S1
-T1
-T2
-T3
-A1 Solid-state release ETU
-S1/-S2 1st auxiliary switch block (2 NO + 2 NC)
-S3/-S4 2nd auxiliary switch block (2 NO + 2 NC)
-S7 (optional) 2nd auxiliary switch block, S7 (2 NO) can be used
if there is no S3 - S3 and S7 have
the same terminal assignment/mounting space
-S8 (optional) 2nd auxiliary switch block, S8 (2 NO) can be used
if there is no S4 - S4 and S8 have
the same terminal assignment/mounting space
3WL1. ..-.....-...2 (2 NO + 2 NC) S1+S2
3WL1. ..-.....-...4 (4 NO + 4 NC) S1+S2+S3+S4
3WL1. ..-.....-...7 (6 NO+ 2 NC) S1+S2+S7+S8
3WL1. ..-.....-...8 (5 NO + 3 NC) S1+S2+S3+S8
-S10 Electrical ON button
-S11 Internal motor shutdown switch (if spring is tensioned)
-S12 Motor shutdown switch
(no automatic tensioning of spring)
-S20 Ready-to-close signaling switch
-S24 Tripped signal switch
-F1 1st auxiliary release, shunt release
-F3 2nd auxiliary release, undervoltage release
-F5 Tripping solenoid
-M Motor for "charging energy store"
-P Stored-energy mechanism
-QS Actuator lever for "stored-energy mechanism"
-Q1 Main contacts
-T1/-T2/-T3 Current transformers
-X5/-X6/-X7/-X8 Terminals
-Y1 Closing solenoid
-R Indicator and reset button for solid-state release
-X8.9/-X8.10 Connection option: external neutral conductor
transformer
-S4