That EN 60898 rating is the standard for household and similar installations; the part also carries a multi-phase rating of 440 V AC, so it handles line-to-line faults in a 400 V three-phase panel without derating. The 2 A rating is the continuous thermal current — don't plan to run it at 2 A continuously in a 70 °C cabinet without checking the derating curve. Ambient temperature range is -40 to +70 °C, and the surrounding humidity influence is specified: max 95% RH at 55 °C, dropping to 55% at 70 °C. That's a railway-grade environmental spec; the part is explicitly designed for railway applications. For DC circuits, the maximum rated voltage is 72 V — fine for 48 V or 60 V control loops, but not for a 110 V DC auxiliary bus. Conductor cross-section range is 0.75 to 35 mm² solid or stranded, with a tightening torque of 2.5 to 3.5 N·m on the screw terminals. That 35 mm² upper end is unusually large for a 1-pole 2 A breaker — it's sized for through-wiring or daisy-chaining rather than just the load wire.
Installation depth is 70 mm, total depth 76 mm including the actuator.