Siemens SENTRON 3WL10 - Motor Protection Applications

That makes it more robust against high inrush currents and false tripping on motor starting.
The starting function suspends the parameters set within the limits of the electronic trip unit
(<I
i
max = 15xI
n
) equally on both devices to withstand certain starting characteristics (inrush /
heavy starting) without unwanted tripping.
After the set active starting time during starting, the parameters are automatically set to the
set values again.
The setting options on the electronic trip units (ETUs) are identical on 3VA27 molded case
circuit breakers and 3WL10 air circuit breakers.
The main applications for motor protection are:
• The 3VA27molded case circuit breaker or 3WL10air circuit breaker as an MSP for starter
combinations, also combined with soft starters or frequency converters
• The 3VA2 molded case circuit breaker or 3WL10 air circuit breaker as a motor starter protector
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All 3VA27 molded case circuit breakers and 3WL10 air circuit breakers are suitable for use
with IE3 motors and, in future, also with IE4 motors.
The 3VA27 molded case circuit breaker or3WL10 air circuit breaker as an MSP for starter
combinations
MSP for starter combinations with ETU320
• Use of the rating plug "L OFF" is not possible.
The overload protection "L" is set to the maximum slow setting.
• The instantaneous short-circuit protection is max. 15x I
n
:
This cannot be increased during the switch-on phase.
Description
2.7Possible uses and portfolio
3VA27 molded case circuit breakers & 3WL10 air circuit breakers
Equipment Manual, 10/2023, L1V30499596002-03 27