CURRENT HIGH Rittal — Branch Circuit Overload / Breaker Trip
At a glance
- Severity
- FAULT STOP
- Domain
- POWER_DISTRIBUTION_SYSTEM
- Reference standard
- IEC 61439-2 / IEC 60364
What it means
A branch circuit or distribution breaker trips on overload: part of the racks lose power.
Probable causes
- Branch load above the protection rating
- Single-phase loads concentrated on one phase
- Thermal derating of the panel/PDU (high rack temperature)
- Short circuit or failed server PSU downstream
- Undersized protection after a hardware upgrade
Where to start
Read branch/phase currents from the PDU metering and compare with the protection ratings.
Full guided diagnosis in the app
The diagnostic tree for this fault has 4 guided steps with measurements, checks and resolutions. You'll find it in DataCIQ, one of the five IndexOS apps: free, works offline.
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The same fault on other brands
More Rittal codes
- PHASE ASYMMETRY — Phase Imbalance
- TEMPERATURE HIGH — Rack / PDU Overtemperature