Littelfuse SymCom ALT-24-S Alternating Relay

The ALT Series alternating relays are used to alternate between two loads. The ALT is commonly used in duplex pumping applications to balance the runtime of both pumps. All Model ALT relays have a built-in debounce feature that prevents the relay from changing state if the switch or float contact bounces momentarily.

These relays are also available with a built-in switch (SW option) that is used to manually force one of the pumps to run every time the float switch is closed. This is helpful when a pump has been removed for repair or for test purposes. In the case of the ALT-X-SW, the switch essentially forces one pump to be the lead pump, while still allowing the second to run when both floats are closed.

The ALT-24-S Relay is for single high-level float applications and has a line voltage of 20-26VAC/VDC. ALT024-S and ALT024-S-SW are not UL Listed.

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