DDA803 A-100/0.3 ABB - 2CSB803101R3000 B425441

The DDA803 A-100/0.3, manufactured by ABB under part number 2CSB803101R3000 (B425441), is a differential lock designed for use with S800 series switches. Specifically, it is intended for a 3-pole switch configuration. This device provides enhanced protection against electrical faults by monitoring the current balance between the poles. In the event of a significant current imbalance, indicating a potential ground fault or leakage, the differential lock will trip the switch, interrupting the circuit and preventing further damage or hazard. The DDA803 A-100/0.3 is rated for a current of 100A, making it suitable for high-current applications. It features a sensitivity of 300mA, meaning it will trip when the differential current exceeds this threshold. This sensitivity level provides a balance between protection and nuisance tripping. The differential lock enhances the safety and reliability of electrical systems by quickly responding to fault conditions. It is an essential component for ensuring the safe operation of electrical equipment and protecting personnel from electrical hazards.