The TM220 thermal-magnetic trip unit gives it a fixed thermal pickup and a magnetic instantaneous trip that is factory-set, so no field adjustment of the trip curve is needed. At 40 °C it carries 50 A continuously, and the thermal derating is shallow: still 50 A up to 50 °C, then 49 A at 55 °C and 45 A at 70 °C — so in a warm enclosure you lose only 5 A from the 50 A nameplate. The breaking capacity is where this part earns its place: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 500 V and 690 V.
The 3VA1150-4EE32-0AA0 measures 70 mm depth, 76.2 mm width, and 130 mm height. The front face carries an IP40 protection rating, so it is fine in a typical enclosed panel; keep the front cover on during washdown or dust exposure.