The 2 A rating at 30 °C derates to 1.92 A at 40 °C and 1.88 A at 45 °C — if the panel ambient runs warm, the actual continuous load limit drops accordingly. The mechanical service life is 4 000 switching cycles, typical for an MCB that sees occasional manual operation or fault clearing rather than daily load switching.
The 18 mm width occupies one modular unit, and the 76 mm depth plus 70 mm installation depth means it sits flush with the rail edge — no extra projection into the gland plate area.