ABB 1354D01A01 Overcurrent Relay Microprocessor

The ABB 1354D01A01 Overcurrent Relay Microprocessor is ABB's microprocessor-based protective relay designed for time-overcurrent protection in electrical circuits. As part of the MCO family, it monitors current and trips protective devices when an overcurrent condition is detected. It accepts a current input range of 0.5 A to 12 A and operates at standard power-system frequencies of 50 or 60 Hz. This relay is used to protect motors, feeders, and other load circuits by providing time-overcurrent protection and coordinating with upstream protection devices such as circuit breakers and motor starters. The model number 1354D01A01 identifies a specific configuration within ABB's line of microprocessor-based overcurrent protection devices.