It's rated for 6 kA breaking capacity per EN 60898 at 400 V AC, and carries a 5 kA interrupting rating per UL 1077 and CSA C22.2 No.235. This is the part you spec when you need a standard 2-module-width (36 mm) MCB for a 230/400 V distribution board or control panel feeder — B-curve means it trips between 3 and 5 times rated current, so it's the go-to for general-purpose resistive and small inductive loads where you don't want nuisance trips from inrush.
The 5 kA rating per UL 1077 means it's also recognized for North American supplementary protection applications, so it fits panels built to either IEC or UL conventions. The B-curve (3-5x In) is the right choice for cable protection and general loads; don't use it for motor circuits where C or D curves handle the higher inrush. The 2-pole design switches both phase and neutral (or two phases in a split-phase system), with a 400 V AC rated voltage per pole.
Mounting position is any orientation. The 76 mm depth (70 mm installation depth) fits standard 80 mm deep enclosures. Supplementary devices (shunt trips, auxiliary contacts) can be installed on either side, so you can add remote tripping or status feedback without swapping the breaker.
Rated for ambient temperatures from -40 °C to +75 °C, with humidity derating: 95% RH up to 55 °C, 55% RH up to 70 °C, 35% RH up to 75 °C. Halogen-free and silicon-free construction. Vibration resistance per IEC 60068-2-6: ±1 mm at 5-25 Hz, 50 m/s² at 25-150 Hz.