The ABB SC520 (Part No.: 3BSE003816R1) is a compact digital input module of the Advant OCS series, designed for industrial automation systems to collect and process discrete digital signals from field devices with high stability and fast response.

The ABB SPAU341C1-AA is a dedicated overcurrent and earth fault protection relay, engineered for medium-voltage power distribution networks with precise fault detection, configurable tripping logic, and multi-protocol communication for grid reliability.

The ABB PM876-1 3BDH000707R1 is a high-performance redundant CPU module for ABB AC 800M DCS, designed to execute complex process control logic with ultra-fast processing speed, 1:1 hot standby redundancy, and seamless integration with distributed I/O for mission-critical industrial applications.

The ABB PCD235A101 (Order No.: 3BHE032025R0101) is a digital control module for medium-voltage power converters, designed to manage converter switching logic, monitor operating parameters, and provide overcurrent/overvoltage protection for stable industrial power conversion.