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Megabreak® - Maintenance guide
M
ain
tenanc
e guide
73
Problem
Possible causes
Checkup & resolution
Notes
The breaker doesn’t
trip by pushing of
trip test button “T”
The breaker is already
opened
Close the breaker.
The O/C connector for
PU is disconnected
Connect the OC
connector
Trip coil doesn’t work
Check the trip coil seal.
If the seal is broken
or if the problem
persists, contact
BTicino
Defect of electronic
trip unit
Check the power up
of the protection unit.
Check trip unit with
test device box. If
the problem persists
contact BTicino
If problem cannot be solved with indications in troubleshooting table, contact BTicino