The Siemens 5SL6106-6 is a SENTRON series miniature circuit breaker — one pole, B-curve tripping characteristic, rated 6 A with a 6 kA breaking capacity per both EN 60898 and IEC 60947-2. This is the part you grab when a lighting or receptacle circuit on a 230/400 V AC distribution board needs a fast-trip MCB that clears faults up to 6 kA without letting the arc sustain. The B-curve means it trips between 3 and 5 times rated current, so it's sized for resistive and light inductive loads where inrush is modest — think general-purpose branch circuits in residential or light commercial infrastructure, not motor or transformer feeders.
DIN-rail fit and panel integration
Occupies a single modular width unit (18 mm) on a standard DIN rail, with a 70 mm installation depth and 76 mm overall depth. Mounting position is any — no derating for horizontal or inverted installation. The IP20 rating applies with connected conductors, which is standard for enclosed distribution boards; the sealable design lets a panel builder lock the toggle position to prevent unauthorized switching. Halogen-free and silicon-free construction matters for environments where outgassing from a fault could contaminate nearby electronics or sensitive processes.
Breaking capacity and coordination
Rated 6 kA at 400 V AC per EN 60898 and the same 6 kA per IEC 60947-2. That's the standard breaking capacity for residential and light commercial panels — it safely interrupts a fault current up to 6 kA without welding the contacts or cascading damage upstream. Energy limitation class 3 means it restricts let-through energy tightly, which helps with selective coordination when paired with an upstream SENTRON or 3VA molded-case breaker. Overvoltage category III and pollution degree 2 confirm it's rated for fixed-installation distribution boards, not portable equipment.