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NOTICE
Circuit breaker may trip.
If the trip settings are changed while the breaker is closed (and under load) the breaker may trip.
Adjust parameters only when the circuit breaker is in the open position.
Internal circuit breaker self-test with tripping
1
2
Running light
All indicators will light up one after other (from left to right or from top to bottom)
3
The flashing time corresponds to the long-time delay t
R
The flashing time deviates more than 10% from the set long-time
delay
t
R
4
Circuit breaker trips
Te s t OK
Circuit breaker does not trip
Te s t not OK
Tes t not OK
Trip unit is defective, even if the circuit breaker trips
5
q Reclosing a circuit breaker trip-
ped by the trip unit (page 6-9)
Test with handheld test device
- Check wiring between trip unit and tripping coil
- Test tripping coil
The test can be canceled
at any time by pressing CLEAR
Press and hold CLEAR Press and hold TEST
Release both buttons at the same time
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