The new Murray Combination Type AFCI includes unique, exclusive and patented LED trip indicators. These indicators provide a valuable analysis tool to help electricians and home owners alike pinpoint the type of problems that cause the AFCI to trip, and therefore save valuable time during troubleshooting and repair. These indicator LEDs are located near the handle of the breaker and will distinguish arcing faults, arcing to ground and overcurrent conditions.
Here is how the trip indicators work:
The LED indications will appear for 5 seconds each time the AFCI is turned “ON” up to 30 days after the last trip. One LED will be illuminated if the last trip was a result of an arcing fault. Two LEDs will be illuminated if the last trip was a result of an arcing fault to ground. No indication will be displayed if the AFCI trips as a result of an overcurrent condition. The last known trip indication can also be manually cleared from memory to assist with verifying resolution of the problem.