Siemens SENTRON 3WA1 - Rear Interfaces; Protection Parameters; Introduction

Description
2.4 ETU300 electronic trip unit
3WA1 air circuit breaker
84 Equipment Manual, 02/2023, 92310000002-06
2.4.3.4 Rear interfaces
On the rear of the ETU300 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 tripping solenoid F5
(2)
X21 terminal for ETU cable harness
2.4.4 Protection parameters
2.4.4.1 Introduction
Note
Do not change any parameters during operation, as this may result in unexpected
tripping.