Three poles, rated 50 A continuous at 40 °C, and it carries a TM220 thermal-magnetic trip unit — that's a fixed thermal element with a magnetic short-circuit pickup set at 220 A (4.4x the continuous rating).
Rating so-what: what those numbers mean for fit
The 50 A rating holds flat from 40 °C up to 50 °C, then starts to derate — 49 A at 55 °C, 48 A at 60 °C, down to 45 A at 70 °C. That's a shallow curve, so you don't lose much if the panel runs warm. The 75.6 kA at 240 V is the headline interrupting number, but check the other voltages if your system is 415 V (52.5 kA), 440 V (32 kA), or 690 V (11.9 kA). The TM220 trip means magnetic pickup is fixed at 220 A — no field-adjustable short-time delay, so it's a straight feeder or branch breaker, not a main with selective coordination requirements.
Dimensions are 130 mm high, 76.2 mm wide (3 inches), 70 mm deep. That's a compact 3-pole footprint — fits a standard MCCB slot in a SENTRON distribution board or a generic panel. IP40 on the front, so it's fine inside an enclosed panel; no special gasketing needed.