The Siemens 5SV3314-3 is a SENTRON residual current circuit breaker (RCCB), 2-pole, type F, short-time delayed, rated 40 A with a 30 mA trip sensitivity at 230 V AC. The short-time delayed design (type F) means it tolerates brief surge currents from equipment like variable-frequency drives or EV chargers without nuisance tripping — a key distinction from instantaneous RCCBs. Its 10 kA short-circuit current rating (SCCR) matches the fault-clearing capability of a typical upstream MCB or fuse, so it can be installed downstream without requiring a separate backup fuse for SCCR coordination. The 2-pole unit occupies 2 modular width units (36 mm) on a DIN rail (REG), with a 70 mm installation depth — standard for SENTRON distribution boards. Mounting position is unrestricted, and supply can enter from top or bottom.
Installation Notes
Rated IP20 with connected conductors in an installed distribution board — suitable for dry indoor enclosures only, not washdown or outdoor exposure. The silicon-free construction is specified for environments where silicone outgassing could contaminate contacts or optics. Mechanical service life is 10,000 operating cycles typical. The unit accepts add-on auxiliary devices for remote signaling or shunt trip.