The breaker's interrupting capacity reaches 121 kA at 240 V AC and 75.6 kA at 415 V AC, giving it substantial fault-clearing headroom for industrial feeder circuits. Thermal derating is minimal through 55 °C — the breaker holds its full 16 A rating up to that ambient. At 60 °C it derates to 15 A, and it maintains 15 A through 70 °C. That flat curve means you don't lose capacity in a warm panel unless you're pushing past 55 °C. The 70 mm depth and 50.8 mm width (2.76 in × 2 in) keep the footprint compact for DIN-rail or panel-mount layouts.
With 121 kA at 240 V AC and 75.6 kA at 415 V AC, this MCCB handles high prospective fault currents common in transformer-fed switchboards. The 2-pole configuration limits it to single-phase or line-to-line applications — it's not a 3-pole device, so don't spec it for three-phase main incomers. The TM210 release is fixed, not adjustable; the magnetic trip threshold is factory-set, which simplifies coordination studies but removes field tuning.