Littelfuse ALT115-S-SW 8-Pin Alternating Relay 95-125V

The Littelfuse ALT115-S-SW is an alternating relay used for HVAC system to control the two loads such as pumps to have equal running time. This solid-state relay has an operating voltage of 95VAC to 125VAC and has 8 pins with an SPDT contact arrangement and has an in-built debounce time of 0.5 seconds to avoid the relay being triggered by bouncing contacts. It is applied in duplex pumping systems in that it switches between the two pumps to increase their durability and effectiveness. Advantages of the part include less damage on the gear, ease of management through the use of an override switch.