NFPA 70E 225.3 requires a circuit breaker that has interrupted a fault approaching its interrupting rating to be what?

• A. Inspected and Tested
• B. Replaced
• C. Re‑energized
• D. Tagged and Left In Service

Answer: (A)

When a circuit breaker interrupts a fault that approaches its interrupting rating, the internal components can be stressed or damaged even if no obvious external signs are present. Because the breaker may have been pushed to the limit, it’s essential to verify that it will still operate correctly under fault conditions. The proper action is to inspect the device for any physical damage, wear, or arcing evidence and then perform appropriate testing to confirm its tripping characteristics and overall function. This ensures it will perform reliably if another fault occurs, reducing the risk of a failure during future service. Replacing the breaker or simply re-energizing it without verification would be unsafe or unnecessarily conservative in every case, and simply tagging and leaving it in service without inspection would not address potential hidden damage.