Alternate your electrical loads with precision and efficiency with an alternating relay. These relays are interposed between your controller and field devices, allowing you to select the primary or secondary load—or alternate between both. Alternating relays are especially useful when you’re powering multiple compressors, pumps, and large HVAC and refrigeration systems. Looking for additional relays? Zoro features a selection of voltage sensor relays and time delay relays, too.