8-pin Plug-in Alternating Relay PRESSURE SWITCH FLOAT SWITCH OR OTHER ISOLATED CONTACT Description 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. The ALT-S is used in single high-level float applications. When the float switch opens, the alternating relay changes state, forcing the other pump to run the next time the float closes. All ALT relays have a built-in debounce feature that prevents the relay from changing state if the switch or float contact bounces momentarily. The ALT-X has an internal cross-connected relay and is used in dual high-level float applications. These floats are commonly referred to as lead and lag floats. The pumps alternate as in the ALT-S version but the cross-connected relay configuration allows both pumps to run simultaneously when both the lead and lag floats are closed. 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. Must use the OT08PC socket for UL Rating! *Note: Manufacturer's recommended screw terminal torque for the OT series Octal Sockets is 12 in.-lbs. Features & Benefits FEATURES Debounce time delay Prevents nuisance actuating causes by waves or spashing in the tank Built-in manual/ Force lead pump operation when a pump is auto switch removed for repair or testing (on select models) Ordering Information Accessories MODEL LINE VOLTAGE DESCRIPTION

Protection Relays Alternating Relays Specifications Input Characteristics Supply Current Functional Characteristics Debounce Time Delay Control Input Impedance (min) 24 115 230 Output Characteristics Output Contact Rating General Characteristics Temperature Range Maximum Input Power Safety Marks UL (OT08PC octal socket required) CSA Dimensions (with socket) Weight Mounting Method Socket Available UL 508 (File #E68520) C22.2 No. 14 (File #46510) H 44.45 mm (1.75”); W 60.33 mm (2.375”); D 104.78 mm (4.125”) 0.38 lb. (6.08 oz., 172.67 g) DIN rail or surface mount (plug into OT08PC socket) OT08PC...