What this MCB is and what the ratings mean
The Siemens 5SL4106-8 is a 1-pole SENTRON miniature circuit breaker with a D tripping characteristic, rated 6 A at 230/400 V AC. The D-curve means it tolerates inrush currents 10–20 times the rated current before tripping magnetically — sized for loads like small motors, transformers, or solenoid banks where the start-up surge would nuisance-trip a B or C curve. The 10 kA breaking capacity holds per both EN 60898 and IEC 60947-2, so it safely interrupts a fault up to that level without welding the contacts or cascading upstream. At 18 mm wide (one modular unit), it snaps onto a standard DIN rail and occupies a single slot in the panel. The 76 mm depth and 70 mm installation depth leave clearance for wiring and busbar connections in a typical distribution board.
Where it fits and how it integrates
Rated for residential buildings and infrastructure per the suitability listing. The IP20 rating applies with connected conductors — standard for enclosed distribution boards; no special washdown or outdoor sealing. Mounting position is unrestricted, and the housing is halogen-free and silicon-free, which matters for panels in clean-room or sensitive environments where outgassing can contaminate contacts or optics. Supplementary devices (shunt trip, auxiliary contacts, alarm switch) can be installed on the side, per the product extension feature. The sealable design allows the panel builder to lock the toggle position after commissioning — useful for tamper-proofing in shared-access installations.