Littelfuse SymCom ALT-100-3-SW Alternating Relay

The ALT-100-3-SW Series are used to alternate between two loads and are commonly used in duplex pump-up and pump-down applications to balance the run-time 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.

The ALT-100-3-SW Model has three float inputs (lead, lag, stop floats), actuating latching relays on lead/lag floats, and 2 LEDs for load indication. Line voltage is 95-120VAC and mounting is 8-pin octal.

Note: Must use the OT08PC socket for the 8-pin models, and the OT11PC socket for the 11-pin models, for UL Rating.  Manufacturer’s recommended screw terminal torque for the OT Series Octal Sockets is 12 in.-lbs.

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