Interrupting capacity runs 75.6 kA at 240 V, 52.5 kA at 415 V, and 32 kA at 440 V — drops to 11.9 kA at 500 V and 690 V. That spread covers most low-voltage commercial and industrial service entrances, but at the higher voltages you're limited to lower-fault panels or downstream subfeeds.
Mounting and thermal budget
Footprint is 76.2 mm wide, 130 mm tall, 70 mm deep — standard 3-pole MCCB spacing for DIN-rail or screw-mount panels. At full load it dissipates 12 W max, so in a sealed enclosure with other breakers you'll want to check the cumulative heat against your cabinet's derating curve. The continuous rating holds at 20 A from 40 °C up to 55 °C, then steps to 19 A at 60 °C through 70 °C. That's a clean thermal profile — no surprise derating until you're past 55 °C ambient.
Operating range and storage
The storage minimum is the cold-soak limit for warehousing — the breaker won't be damaged sitting in an unheated warehouse, but don't energize it below -25 °C.