Special Function Alternating Relay
The ARA-120-AHE is a special function TRIPLEXOR designed for three load installations. This model has a field selection switch that is used to omit one of the three loads for general or emergency maintenance while duplexing the remaining two loads. The ARA-120-AHE has the option of alternating on each load cycle or by external clocking. This alternating relay also allows for additional loads to run in the event of excess load requirements. The alternating action is initiated by the control switch between ter-minals 2 and 4 when the factory installed jumper is in place between terminals 3 and 4. The alternating action may be initiated externally by removing the fac-tory installed jumper between terminals 3 and 4 and placing an isolated normally open switch between terminals 2 and 3. An alternating action will occur each time this isolated switch is closed and then re-opened.
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