3WL air circuit breakers
3.1 Introduction and overview
3WL/3VL circuit breakers with communication capability - PROFIBUS
24
System Manual, 03/2011, A5E01051353-02
①
Guide frame
⑭
Key-operated EMERGENCY STOP
pushbutton
②
Main front terminal, flange,
horizontal, vertical
⑮
Motorized operating mechanism
③
Position signaling switch
⑯
Switching cycles counter
④
Grounding contact, leading
⑰
Breaker Status Sensor (BSS)
⑤
Shutters
⑱
Overcurrent release (ETU)
⑥
COM15 PROFIBUS module or
COM16 Modbus RTU module
⑲
Reset solenoid
⑦
External CubicleBUS modules
⑳
Breaker Data Adapter PLUS (BDA PLUS)
⑧
Switch-on solenoid, auxiliary release
Four-line LCD module
⑨
Auxiliary conductor plug-in system
Ground-fault protection module
⑩
Auxiliary switch block
Rated current module
⑪
Door sealing frame
Metering function module
⑫
Locking set base plate
3WL air circuit breakers
⑬
Transparent insert, function insert
Figure 3-1
3WL air circuit breakers, accessories