The Duplexor is used in control panels where two loads are required to
alternate to provide equal run time on the loads. The alternating
action is initiated by a control switch, which is common with one side
of the control voltage. The output contacts will change states
each time the control switch is opened, thus alternating the two loads.
LED indicators show the position of the output relay.
The ARA series is the standard Duplexor
providing automatic alternating sequence. The ARB has the
automatic alternating feature plus the option of locking it into one
mode. A three position switch permits the field selection of
normal duplexing action, locking in the A-B sequence, or B-A sequence.