2c720-technical-bulletin.pdf
The 2C720 Series relays are solid-state current sensing relays with electromechanical output contacts. Designed for AC current systems, the 2C720 is ideally suited to monitor current transformer outputs wherever high accuracy and reliable, maintenance-free operation is essential. Part of the modular 700 Series of electronic measuring relays, it meets rigid Australian and international specifications for electrically hostile conditions. All power is derived from the sensed current, so no auxiliary supply is required. The output relay operates when the input current exceeds the pickup setting, indicated by a red LED, and resets when current drops below the preset drop-out value.