Siemens SENTRON 3WA1 Manual page 53

Overload alarm AL1 and AL2
The alarm function of the overload protection is divided into two levels.
• Alarm threshold AL1:
Alarm threshold AL1 can be set in the range from 40% to 100% of the overload
protection current setting I
When the alarm threshold AL1 is exceeded, the LED labeled "AL" lights up
permanently in yellow and a message is shown on the display of the electronic trip
unit.
• Alarm threshold AL2:
Alarm threshold AL2 cannot be set; it corresponds to the current setting I
overload protection.
When the alarm threshold AL2 is exceeded, the LED labeled "AL" lights up
permanently in red and a message is shown on the display of the electronic trip unit.
Characteristic
The overload protection is available with the following tripping characteristics:
• I
• I
and downstream fuses
3WA1 air circuit breaker
Equipment Manual, 02/2023, 92310000002-06
t characteristic with dependent long-term delay
2
t characteristic with dependent long-term delay for optimum selectivity for upstream
4
using the SENTRON powerconfig configuration software.
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Description
2.3 Protection system
of the
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