Two individual series of electronic trip units
ETU, 3-series
• LI, LSI, LSIG protection function
• Adjustable neutral conductor protection
• Rotary coding switch in 3VA design
• Tripping characteristics with selective design
for the 3WL and 3VA family
• Operation in the temperature range from
-25°C to +70°C
ETU, 6-series
• LSI, LSIG protection function
• Adjustable neutral conductor protection
• Display and modularly expandable function‐
ality
• Fine adjustment for increased selectivity re‐
quirements
• Communication-capable
• Metering function (Basic & Advanced)
• Enhanced protective functions for tailored ap‐
plications & specic network requirements
• Residual current protection
• Ground fault protection in the neutral point
• Interactive I/O functionalities
• Operation in the temperature range from
-25°C to +70°C
Description
2.9Electronic trip unit ETU
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Equipment Manual, 10/2023, L1V30499596002-03 45