Displays and operator controls
8.1 Overcurrent trip unit without LCD display
3VL IEC molded case circuit breakers
110 System Manual, 11/2013, 110 0110 - 02 DS 03
Thermal-magnetic overcurrent releases TM VL160-VL630
System protection TM, LI / LIN function
Overload protection adjustable I
R
= 0.8 to 1 x
I
n
Short-circuit protection adjustable I
i
= 5 to
10 x I
n
for VL160 to VL630
"DC", "EJ", "EM" and "EC" versions
Electronic trip units ETU VL160-VL1600
The electronic trip units include the following operating features:
● No auxiliary voltage is necessary for the tripping system. The tripping system draws its
supply from the main connecting cables. Reliable tripping is thus ensured.
● All ETUs have a thermal image
● A flashing green LED indicates correct operation of the microprocessor
● Overload status (I > 1.05 x I
R
) is indicated by a permanent yellow LED (alarm)
● Integrated self-test function
● Plug-in socket for tester
● Communication connection to PROFIBUS DP or Modbus RTU for ETUs with
communication preparation
Note
Signal output to the COM20 / COM21
Communication preparation (1 auxiliary switch and 1 alarm switch) is already integrated into
the left accessory compartment for all ETUs with communication preparation and wi
red to
the ETU. The cable to the COM20 / COM21 is included in the scope of supply.
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