The TM210 thermal-magnetic release gives it a continuous current rating of 20 A that holds flat from 40 °C through 55 °C, then derates to 19 A at 60–70 °C — useful to know if the breaker sits in a warm enclosure or next to other heat sources. Interrupting capacity is the headline here: 187 kA at 240 V AC, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 500 V and 690 V.
Physical footprint: 130 mm height, 101.6 mm width (4 inches), 70 mm depth. The 4-inch width is standard for a 4-pole MCCB in this class — it occupies the same DIN-rail or mounting-plate slot as other SENTRON 3VA four-pole units. The optional motor drive (listed as available) allows remote tripping or reclose in automated panels. Power loss is 12 W maximum at rated load. In a densely packed panel, that's modest but not trivial — factor it into your thermal budget if the enclosure is sealed or tightly louvered.