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O
owenstabithaJul 28, 2025
What to do if my Siemens 3AH circuit breaker will not trip?
- EElizabeth HarperJul 28, 2025
If your Siemens Other circuit breaker won't trip, several factors could be at play. First, check if the secondary control power is de-energized or if the control power fuses are blown and correct as indicated. Inspect for any damage to wiring, terminals, or connectors, and repair as necessary. Also, verify that there is a tripping signal to secondary disconnect contact 1, check for continuity, and correct the relay logic. Ensure that secondary disconnect contacts 1 or 2 are engaging properly, and replace them if required. Check the trip coil (52T) for failure, and replace it if necessary. Finally, confirm that auxiliary switch NO contacts 23-24 or 33-34 are not open when the breaker is closed; check the linkage and switch, and replace or adjust as needed.
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