Siemens SENTRON 3WL10 - Design of the Electronic Trip Units; Electronic Trip Units of the 3-Series

Description
2.8 Electronic trip unit ETU
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
52 Manual, 10/2018, L1V30499596002-01
2.8.3
Design of the electronic trip units
2.8.3.1
Electronic trip units of the 3-series
The following figure shows the maximum possible equipment of an ETU of the 3-series.
Depending on the ETU used, the number of rotary coding switches and LEDs can vary.
①
Active LED ACT
②
DIP switch
③
Rotary coding switch with LED
④
Test and info button
⑤
Connection socket for test devices TD310, TD410, and TD420
See also
Entering parameters (Page 197)
Alarms (Page 203)
Display elements (ETUs of the 3-series)
ETU readiness can be indicated via the LED ACT.
Alarms and trips are indicated via the LEDs in the area of the rotary coding switches.
You will find the precise description and meaning of the LED states in Chapter Alarms
(Page 203).