Schneider Electric's CLE-105001 Under Frequency Relay (Square D) is a protection device that monitors the frequency of an AC power source and activates its relay outputs when the frequency drops below a preset threshold. Designed for industrial power systems and generator installations, it helps safeguard equipment by signaling or interlocking circuit components during under-frequency events. Typical applications include standby generators and other critical power installations where maintaining stable frequency is essential.
