That fixed 50 A holds from 40 °C through 50 °C ambient; above that it derates linearly to 45 A at 70 °C, which matters if this breaker lands in a crowded, hot enclosure without forced cooling. Short-circuit interrupting capacity (SCCR) varies sharply with line voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 11.9 kA at 500 V or 690 V. The TM210 overcurrent release combines a thermal bimetal for overload protection and a magnetic solenoid for short-circuit response. Maximum power dissipation is 14.6 W — negligible for most panels but worth summing if ten of these sit side-by-side in a sub-distribution board.
Physical fit — what the 70 mm depth means for the enclosure
Width of 101.6 mm (4 inches) is the standard 4-pole MCCB footprint; it mates with the same busbar and lug kits as other SENTRON 3VA 4-pole breakers.