Rated 50 A continuous at 40 °C (derates to 45 A at 70 °C), it uses a TM120M thermal-magnetic release that handles the inrush without nuisance tripping on motor start.
At 55 °C it drops to 49 A, at 60 °C to 48 A, and at 70 °C to 45 A. That thermal curve is what matters when the MCC is in a cement plant or steel mill control room where summer temps push past 45 °C.
The interrupting ratings across voltages tell you where this breaker can be placed in a selective coordination study. At 240 V it clears 187 kA, at 415 V it clears 121 kA, at 440 V it clears 75.6 kA, and at 500 V and 690 V it clears 7.5 kA. The TM120M release is a fixed thermal-magnetic type; no electronic trip unit adjustments, no communication module, no undervoltage release or phase failure detection on this variant. It's a straightforward, no-frills motor-circuit protector that does one job and does it without extra wiring.
The width is a standard 3-inch (76.2 mm) footprint for a 3-pole MCCB — matches the cutout spacing on most panelboards and MCC buckets. Depth of 70 mm (2.76 in) leaves enough room for rear-connected bus bars or cable lugs without forcing an oversized enclosure.