The ABB DS201-C16/0.03 is a premium 16A, 2P (1P+N) RCBO specifically engineered for residential final circuit safety. This Italian-made device combines earth leakage, overload, and short circuit protection into a compact 36mm width for standard 35mm DIN rail mounting. It serves as the primary safety gate, monitoring for current imbalances as low as 30mA to ensure instantaneous tripping during faults.