The ABB AEXB-02 (3HNE06225-1/07) is an Ex p purge controller module designed for hazardous area automation systems. Its core function is to regulate the flow of protective gas (typically compressed air or inert gas) into an electrical enclosure, creating a positive internal pressure relative to the surrounding hazardous atmosphere. This pressure differential physically prevents explosive mixtures from entering the cabinet, ensuring safe operation of electrical equipment in explosive environments.
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