Output connections: Output connections are divided into trip and control outputs, signal outputs, and IRF (internal fault relay) outputs. The tripping and control output are achieved through PO1-PO4 contacts, which can control most circuit breakers; The signal output is transmitted through SO1-SO4 contacts to indicate the starting and tripping status of the equipment; IRF contacts have different closed states under normal and fault conditions, used for self-monitoring systems of equipment.
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