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Siemens · 10/2014
Introduction
3WL Air Circuit Breakers
3WL air circuit breakers:
3WL air circuit breakers are extremely flexible in use and
offer consistent communication capability. With the 3WL circuit
breakers, just three sizes cover a performance range of 630 A to
6300 A. All models are characterized by the same design, the
same operation and the same comprehensive accessories.
$ Guide frame
% Main circuit connection, front, flange, horizontal, vertical
& Position signaling switch
( Grounding connection, leading
) Shutters
* COM15 PROFIBUS module or COM16 MODBUS module
+ External CubicleBUS modules
, Closing coil, auxiliary release
- Auxiliary conductor plug-in system
. Auxiliary switch block
/ Door sealing frame
0 Interlocking set for mechanical on/off
1 Transparent panel, function insert
2 EMERGENCY-STOP pushbutton, key operated
3 Motorized operating mechanism
4 Operating cycles counter
5 Breaker Status Sensor (BSS)
6 Protective devices with device holder, Electronic Trip Unit (ETU)
7 Remote reset solenoid
8 Breaker Data Adapter (BDA Plus)
9 Four-line display
: Ground-fault protection module
; Rating plug
< Metering function module
= Circuit breaker
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