The 75.6 kA interrupting rating at 240 V drops to 52.5 kA at 415 V and 32 kA at 440 V, so the SCCR headroom shrinks fast as line voltage climbs — verify your available fault current against the 415 V or 440 V column if you're on a 400 V-class system.
Rated continuous current holds flat at 20 A from 40 °C to 50 °C, then derates to 19.2 A at 55 °C and 18 A at 70 °C — usable in warm enclosures but the headroom narrows above 50 °C. The 3-pole block is 76.2 mm wide, 130 mm tall, 70 mm deep, and carries 1 auxiliary switch plus 1 trip alarm contact (HQ version) built in, so you don't need a separate aux block for status feedback.