The Siemens SENTRON 5SV1616-1KK16 is a 2-pole (1P+N) residual-current circuit breaker with overcurrent protection (RCBO) rated at 16 A operational current and 300 mA residual tripping current, Type AC, with a C tripping characteristic. It's designed for 50 Hz AC systems at 230 V and fits a single modular-width unit (18 mm) on a DIN rail. The 300 mA residual sensitivity (Type AC) covers sinusoidal AC earth faults — common for general-purpose circuits where no DC or pulsating fault content is expected.
The 5SV1616-1KK16 is part of the Siemens SENTRON range, a widely used protection component line. For a BOM freeze or second-source gate, the closest functional peer is the 5SL6550-7BB — but verify the pole count, residual current, and curve before substituting, as the 5SL6550-7BB is a different variant.
Width is 18 mm (1 modular unit), depth 77 mm, height 90 mm, with an installation depth of 70 mm. The neutral conductor is switched internally (1P+N).