The headline number here is the interrupting capacity: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at 690 V. The TM240 release gives a fixed thermal curve and magnetic trip; no field adjustment, which simplifies spec-in for a BOM line where repeatability matters more than tuning. Thermal derating is straightforward: the breaker holds its full 16 A rating from 40 °C through 50 °C, then drops to 15.36 A at 55 °C, 15.04 A at 60 °C, 14.72 A at 65 °C, and 14.4 A at 70 °C. If your panel ambient sits at 60 °C, you lose about 1 A — plan the load accordingly.
This MCCB occupies a 76.2 mm wide by 130 mm tall by 70 mm deep footprint — standard for a 3-pole SENTRON frame at this rating. Two auxiliary switches (HQ type) come built in, giving you status feedback without adding a separate module — useful for PLC inputs or remote indication.