Siemens SENTRON 3WA1 - Rear Interfaces

Description
2.5 Electronic trip unit ETU600
3WA1 air circuit breaker
112 Equipment Manual, 02/2023, 92310000002-06
2.5.4.6 Rear interfaces
On the rear of the ETU600 electronic trip unit, there are terminals to ensure the circuit
breaker functions.
The terminals are only accessible after removing the electronic trip unit. The plug-in
connections may only be disconnected for the exchange of the electronic trip unit.
(1)
X22 terminal for trip solenoid F5
(2)
Bluetooth and USB-C interface TUI600
(3)
X21 terminal for ETU cable harness
(4)
X23 terminal for voltage measurement