It carries a 20 A rating at 40 °C ambient, holds that rating flat through 55 °C, and derates only to 19 A at 70 °C — so for most panel environments below 55 °C, no derating factor is needed on the BOM.
Breaking capacity is 52.5 kA at 240 V AC, 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at 500 V and 690 V. That 52.5 kA at 240 V gives solid headroom for high-fault service-entrance panels on 240 V delta or 120/240 V split-phase systems. At 415 V the 32 kA rating is typical for industrial MCCB duty on 400 V class supplies.
Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a standard 3-pole MCCB footprint that fits most DIN-rail or direct-mount panel layouts.