Siemens SENTRON 5SJ6310-6 — 3-pole B-curve MCB, 10 A, 6 kA
Mounting position is unrestricted, and the touch-protected terminals accept conductors up to the rated cross-section per the datasheet. The IP20 rating applies with conductors connected — standard for enclosed panel use.
The energy limitation class of 3 means it restricts let-through energy during a fault — relevant for downstream component protection and cable thermal stress. For DC circuits, the breaker is rated up to 60 V, which covers 48 V control buses and telecom-style supplies. The AC/DC voltage type means the same unit handles both, though the breaking capacity on DC is typically lower — verify the DC performance curve if the circuit is purely DC.
Environmental and storage ratings
Periodic ambient temperature up to +55 °C with 95% humidity is within the operating envelope, though continuous operation near the upper limit should be checked against the thermal derating curve. Mechanical service life is rated at 20,000 switching cycles typical — sufficient for normal panel switching and isolation duty. Vibration resistance per IEC 60068-2-6 is 50 m/s² at 25 to 150 Hz and 60 m/s² at 10 to 150 Hz, which covers most industrial panel vibration profiles without additional damping.