The Siemens 5SL6114-7CC is a 1-pole miniature circuit breaker from the SENTRON 5SL6 family, rated at 0.3 A with a C-trip characteristic and a 6 kA interrupting capacity at 230/400 V.
Compliance documentation a quality reviewer expects
RoHS compliance is declared effective 01 June 2013.
The 0.3 A rating is unusually low for a 1-pole MCB; it is sized for signal-level or very small transformer protection, not general branch circuits. Verify the load's inrush characteristic against the C-curve: a 0.3 A C-curve breaker will hold a steady 0.3 A resistive load but may trip on a transformer magnetizing inrush that briefly exceeds 1.5 A to 3 A (5-10× In).