The Siemens 5SL6503-6CC is a miniature circuit breaker (MCB) rated 230 V with a 6 kA breaking capacity, 1+N-pole configuration, B tripping characteristic, and 3 A rated current. It sits in the Basic Devices product family, Group Code P310, Product Group 3819.
The B curve (3–5× In) trips fast on moderate overloads — suited for resistive and general-purpose loads, not high-inrush motor circuits. The 1+N-pole form factor switches both line and neutral, fitting standard single-phase consumer units.
Deployment context
Snap-on DIN rail mounting for panel integration. The neutral pole is switched, so verify the neutral bus bar arrangement in your distribution board — this MCB opens the neutral on fault, which is typical for UK/EU single-phase final circuits.