What this MCB does on the rail
Breaking capacity is 10 kA for both Icn (service) and Icu (ultimate) at 500 V, which puts it in the standard domestic and light commercial range. Overvoltage category IV means it's rated for the main distribution board, not just sub-circuits — it can handle the higher transient stress at the service entrance.
Twin terminals accept up to 2.4 Nm tightening torque, which gives a solid bite on 10 A circuit wiring without crushing fine-stranded conductors. IP20 means it's for dry enclosures only — no washdown exposure. Depth of 78.5 mm and height of 91 mm fit standard distribution board cutouts. Thermal-magnetic mechanism needs no external power for trip operation — it's self-powered from the line current.