The 5SV3614-6 is a Siemens SENTRON residual current circuit breaker (RCCB) — a 2-pole, instantaneous-trip device rated 40 A at 40 °C with a 300 mA residual trip threshold. The supply voltage is rated 230/400 V AC at 50 Hz — the 230 V is the phase-to-neutral voltage for a single-phase feed; the 400 V is the phase-to-phase voltage when the device is used in a three-phase system with the neutral conductor passing through. Derating is built into the spec: at 45 °C the rated current drops to 38.1 A, at 50 °C to 35.59 A, and at 70 °C to 17.6 A. The permissible I²t of 58 000 A²·s and let-through current of 5 200 A are the energy and peak current the device can withstand during a fault before the upstream protective device clears.
The silicon-free feature is relevant for automotive or paint-shop applications where silicone outgassing can cause adhesion failures.
Integration notes
Mounts on a DIN rail (REG) in any position — top or bottom feed is permitted. The 70 mm depth and 90 mm height fit standard 60 mm grid-spacing enclosures. The surge current resistance is rated 1 kA (8/20 µs waveform) per IEC 61008-1 at 0.5 kA — this is the impulse current the device can withstand without nuisance tripping. If your installation is subject to frequent lightning surges (rural overhead lines, long cable runs), consider adding a surge protective device upstream to reduce stress on the RCCB.