At 415 V the rating is still 154 kA, and at 440 V it holds 121 kA, so this breaker stays selective with downstream devices across a wide voltage band. The interrupting capacity drops to 17 kA at 500 V and 690 V, which is still adequate for most 480 V and 600 V class installations but worth noting if your system runs above 480 V and the fault current exceeds that figure. The breaker carries 100 A from 40 °C through 50 °C without derating; at 55 °C it drops to 98 A, at 60 °C to 96 A, at 65 °C to 94 A, and at 70 °C to 91 A.
That 76.2 mm width is three 25.4 mm pole spaces — standard for a 3-pole MCCB in a Siemens or generic distribution panel. The 70 mm depth means it fits shallow enclosures where a deeper frame would hit the backplate or gland plate. Mounting is via the standard SENTRON base plate or DIN rail adapter (not included); the TM210 release is factory-set and non-interchangeable, so no field calibration is needed. The trip indicator gives a visual flag when the breaker has opened on fault — useful for troubleshooting without opening the panel door.