The Siemens SENTRON 5SV4612-0 is a 2-pole residual current operated circuit breaker (RCCB), Type AC, rated 25 A with a 300 mA sensitivity, for 230 V AC supply (also rated 230/400 V AC). It is an instantaneous (non-delayed) design, meaning it trips without intentional time delay on residual current — suited for general-purpose earth leakage protection where selectivity is not required. The 300 mA sensitivity is typical for protection against fire risk from earth faults rather than direct personal shock protection (which would require 30 mA or lower).
The 70 mm installation depth matches standard distribution board depth. Supply connection can be top or bottom.
