ABB 64418ZA Relay

ABB 64418ZA Phase/Voltage Loss Relay is a rugged protection device that monitors the integrity of a three-phase power supply and signals a protective action if a phase is lost or voltage deviates beyond specified limits, helping safeguard motors, transformers, and switchgear from outages or damage. The unit is configured with a 300 VDC coil rated at 1 A, making it compatible with control circuits that expect a DC coil within that range. Originating from ASEA BROWN BOVERI and later associated with BALDOR RELIANCE, the 64418ZA embodies ABB’s legacy in protective relay technology. The relay weighs about 1.93 pounds, reflecting its solid industrial build suitable for use in demanding environments. Typical applications include distribution panels and motor-control centers where phase loss or abnormal voltage must be detected quickly to trigger protective actions and maintain system uptime.