Macromatic Alternating Relay, 120VAC, 10A @ 240V, 10A @ 28V, Octal Base Type, 8 Pins, 3.0VA, SPDT

Alternating Relays with SPDT outputs are used in special applications where the optimization of load usage is required by equalizing the run time of two loads. This alternating action is initiated by a control switch, such as a float switch, pressure switch, or other isolated contact. Each time the initiating switch is opened, the output relay contacts will change state, thus alternating the two loads. Two LEDs indicate which load is the next to energize. A three-position selector switch is offered. This allows the unit to alternate the two loads as normal or select one or the other load to be the only one energized when the control switch closes. A load that has fewer hours than the other load could be used more often to eventually balance the run time of both loads. The selector switch has a low-profile to prevent any accidental changes in status.