The Siemens SENTRON 5SV3312-6KK12 is a 2-pole residual current circuit breaker (RCCB) rated 25 A at 230 V AC, 50 Hz, with a 30 mA trip threshold and Type A sensitivity for pulsating DC and sinusoidal AC fault currents. It is an instantaneous (non-time-delayed) design, meaning it trips without intentional delay — suited for circuits where fast disconnection is needed and selectivity with upstream devices is managed by rating rather than timing. Rated short-circuit current withstand is 10 kA, with a permissible let-through current of 5 200 A and I²t of 58 000 A²·s, giving the panel designer clear coordination data for upstream breaker selection.
Depth is 70 mm, height 90 mm — standard for a 2-pole RCCB in a SENTRON subdistribution board. Rated IP20 with conductors connected and distribution board installed. Silicon-free construction, overvoltage category III. Supply connection can be top or bottom; for the SIGRES variant (harsh ambient conditions), top feed is required to maintain function in the switched-off state.