Panel fit and what the ratings mean
The Siemens 5SL6210-7RC is a 2-pole SENTRON miniature circuit breaker rated 10 A with a C tripping characteristic, meaning it handles moderate inrush from motor starters or lighting ballasts without nuisance trips while still protecting branch-circuit wiring. Its 7.5 kA breaking capacity per EN 60898 at 415 V AC is sized for residential and light commercial distribution boards where the prospective fault current stays under that threshold — typical for a sub-distribution board fed from a larger main breaker. The 36 mm width (2 modular width units) snaps onto a standard DIN rail and needs 70 mm installation depth behind the panel door, with the full 76 mm body depth accounting for the front toggle. Rated for 50/60 Hz, single-phase up to 250 V or multi-phase up to 440 V AC. The C-curve trips magnetically between 5× and 10× rated current (50–100 A for this 10 A unit), which is the standard choice for general-purpose loads like small motors, transformers, and capacitor banks where the inrush peak is higher than resistive loads but still within the curve's window. The 7.5 kA rating is the short-circuit capacity at 415 V AC per EN 60898; the same breaker is also rated for DC operation up to 72 V, making it usable in DC sub-circuits within the same panel if the polarity and voltage stay within that limit.
Sourcing and lifecycle
The breaker accepts supplementary devices like auxiliary switches, shunt trips, and alarm contacts from the SENTRON accessory range. The housing is halogen-free and silicon-free, which matters for panels in clean-room or high-reliability environments where outgassing is a concern. Sealable with a lead seal or lockout tag for lockout/tagout compliance.
Integration notes
Mounts in any orientation. The IP20 rating with connected conductors means it is protected against finger contact but not water ingress — standard for an enclosed distribution board. Overvoltage category III and pollution degree 2 are typical for fixed-installation branch-circuit protection. The 10 000 mechanical operating cycles cover decades of normal switching in a residential or commercial panel.