Description
The ALT-xxx-1-SW/ALT-xxx-3-SW Series are used to alternate
between two loads and are commonly used in duplex
pump-up and pump-down applications to balance the runtime
of both pumps.
The ALT relays have a built-in debounce time delay that prevents
the relay from changing state if the float momentarily bounces,
and they have a built-in switch to manually force a specific load
(pump) to operate each time the input float closes. This is helpful
when performing periodic maintenance or pump repair.
Must use the OT08PC socket for the 8-pin models, and the OT11PC socket for the
11-pin models, for UL Rating!
*Note: Manufacturer’s recommended screw terminal torque for the OT Series
Octal Sockets is 12 in.-lbs.

FEATURES BENEFITS
Debounce time delay Prevents rapid cycling caused by waves or splashing
in the tank
LED indicators Visual indication of load operation in
duplex application
Built-in manual switch
to force load operation
Helpful to control load operation when performing
periodic maintenance or pump repair
ALT-xxx-3-SW
offers duplexing
Allows lag pump to energize if lead pump can’t
handle current demand