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
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