The ABB is an active arc-fault protection system designed to extinguish internal arcs in less than 4 milliseconds .
: Features a Self-Monitoring function and a Test Mode to verify detection and settings without tripping the PSE. Installation & Maintenance Notes abb+ufes+manual
The entire process—from sensing the arc to full extinction—takes less than 4 milliseconds . The ABB is an active arc-fault protection system