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What does "Micrologic Download Layer" mean on the trip unit?

Trip  unit message meaning
Product Line:
Molded Case Circuit Breaker Trip Units
Applies to Micrologic Ammeter, Power and Harmonic Trip units
The trip unit has to be replaced when the Micrologic display shows the message "MICROLOGIC DOWNLOAD LAYER". 
This means that the trip unit has a firmware issue or malfunction. 

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