It's designed for line protection in distribution panels, sized for a 101.6 mm wide, 130 mm tall, 70 mm deep footprint — fits standard enclosure cutouts for 4-pole MCCBs.
This breaker clears 220 kA at 240 V AC, 154 kA at 415 V, and 121 kA at 440 V. Those are high-interrupting ratings — it handles bolted faults near the transformer secondary without upstream series protection. At 500 V and 690 V it still holds 17 kA, which covers most motor-circuit faults on 480/600 V systems.
Thermal derating and temperature range
At 60 °C and 65 °C it drops to 19 A, and at 70 °C it's still 19 A.
Front IP40 rated — suitable for general indoor panel use, not washdown. The TM240 release is fixed thermal-magnetic; no trip indicator. Power loss is 12 W maximum — account for that in your panel thermal budget.