The Siemens 5SL7102-8RC is a 1-pole miniature circuit breaker (MCB) rated for 240/415 V with a 15 kA breaking capacity and a D 2 tripping characteristic. The 2 A rating sets the continuous current it carries under normal conditions.
As a 1-pole MCB on a DIN rail, it snaps into the distribution board or sub-panel alongside other 5SL series breakers. The 15 kA breaking capacity at 240/415 V gives selectivity headroom downstream of a larger upstream device — useful when coordinating with a main breaker or RCD in a commercial or light industrial panel.