The 5SV3642-6BA: Rated for 230/400 V AC at 50 Hz, it handles conductor sizes from 0.75 mm² up to 35 mm² solid or stranded — enough for the incoming feed on a sub-distribution board. This is an instantaneous-trip RCCB (no short-time delay), so it drops the circuit the moment leakage exceeds 300 mA — no coordination curve to consider for selectivity with upstream devices on a timed delay.
At 65 °C it drops to 23.3 A, and at 70 °C to 17.62 A. If this RCCB lives in a hot enclosure (e.g., adjacent to contactors or a drive), the 60 °C ceiling is the safe limit for a continuous 25 A load. Type A detection means it catches sinusoidal AC faults and pulsating DC faults up to 300 mA — the standard for circuits with single-phase rectifiers, switched-mode supplies, or VFDs that produce DC ripple. Not suitable for pure DC faults (Type B territory). Short-circuit withstand is 10 kA per the rating; the I²t let-through is 58 000 A²·s. The 4-pole (4P) construction switches all three phases and neutral. IP20 rating applies only when the distribution board is installed and conductors are connected — meaning the RCCB itself is not touch-safe until it's inside the enclosure. Finger and back-of-hand safe per the protection-against-electrical-shock listing.
Deployment context
Mounting position is unrestricted, so it fits in tight enclosures where orientation is dictated by busbar routing. Depth is 70 mm, installation depth also 70 mm — no extra clearance behind the DIN rail needed beyond the device body. Height is 90 mm. The operating limit governs normal service; the storage limit covers transport and warehouse idle periods.