261D120

The Model 261 series Alternating Relay is designed for duplex pumping
systems where it is desirable to equalize pump run time. The solid-state
alternating circuit drives an internal electromechanical relay. A
continuous power source and control switch are required. The control
switch (float, pressure or other isolated contact) is connected between
the L1 terminal and the control terminal. Each time the control switch
is opened the output contacts will change states. Indicator lights on
the case show the internal relay status. On the optional toggle switch
versions, the toggle switch is set to the ALTERNATE position. Setting
the switch to Load 1 or Load 2 will lock the relay in position,
preventing alternation.