The Siemens SENTRON 5SQ2570-0KA16 is a 2-pole miniature circuit breaker with 1P+N configuration, rated 16 A at 240 V AC, 50 Hz, with a C tripping characteristic. The 55 mm installation depth and 2 width units fit standard DIN-rail enclosures. IP20 finger-safe terminals are adequate for enclosed panel mounting.
Panel-builder commissioning notes
Neutral conductor switching is integrated, so the neutral bar is opened and closed with the protected pole. This eliminates the need for a separate neutral disconnect in single-phase final sub-circuits where the installation standard requires both phase and neutral interruption. Verify that the neutral terminal accepts the conductor cross-section you are running — the evidence does not list the terminal capacity, so confirm against the physical marking before terminating. Energy limiting class 3 indicates the breaker limits let-through energy effectively under fault conditions, which aids downstream device coordination.