Siemens SENTRON 3WL10 - Electronic Trip Units of the 6-Series

See also
Entering parameters (Page185)
Alarms (Page191)
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 󹪝nd the precise description and meaning of the LED states in Chapter Alarms
(Page191).
Operating elements (ETUs of the 3-series)
The electronic trip units of the 3-series are equipped with rotary coding and DIP switches.
• DIP switches: Setting the neutral protection and the line frequency
• Rotary coding switch: Parameterizing the protection functions
• Test and info button: Enables test tripping in conjunction with a test device or with another
power source. Also display of the last reason for tripping after a fault by lighting up the LED
for this purpose.
This is enabled by a button cell inside the ETU without any external power supply.
2.9.3.2 Electronic trip units of the 6-series
$&7
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① Active LED ACT
② Warning displays
③ Operating keys, including test and info button
④ Connection socket for test devices TD310, TD410, and TD420
⑤ Display (LCD)
Description
2.9Electronic trip unit ETU
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Equipment Manual, 10/2023, L1V30499596002-03 49