Weidmueller TR BD AITB BB 1RCD W/O TS

TR BD AITB BB 1RCD W/O TS refers to a specific electrical distribution board setup. It includes an Automatic Insertion Type Breaker (AITB) combined with a Residual Current Device (RCD) for overcurrent and leakage current protection. "BB" likely indicates a specific model series, "1RCD" means one RCD, and "W/O TS" stands for "Without Test Switch," meaning the unit lacks a built-in test switch for the RCD. This configuration is commonly used in commercial or residential applications to ensure electrical safety by detecting fault currents.