The 489-P5-HI-A20-E-H relay has a conformal coating and is a protective relay for power systems. Manufactured by GE Multilin, it is designed to provide protection against various electrical failures that can occur in power system equipment such as transformers, generators and motors.

The relay has a variety of functions, including high-speed fault detection, digital signal processing, and advanced communication capabilities. It also has a conformal coating, which is a protective coating applied to the electronic components of the relay to protect them from environmental factors such as moisture, dust and chemicals.

The “489” in the relay name indicates that it is part of the 489 series of protective relays. “P5” indicates that it is a contact ground overcurrent relay with a directional element. “HI” indicates that it is a high setting overcurrent relay. “A20” indicates that it has a rated current of 20 amps, and “EH” indicates that it is a 5VDC control voltage relay.

Overall, the 489-P5-HI-A20-E-H relay with conformal coating is a specialized device that provides critical protection for power system equipment and helps ensure safe and reliable operation of the power system.