63 A MCCB with shunt trip — line protection in a 70 mm footprint
Its interrupting capacity reaches 121 kA at 240 V AC, stepping down to 75.6 kA at 415 V and 52.5 kA at 440 V — figures that define the fault-clearing capability at the point of installation. At 70 mm deep and 76.2 mm wide, it fits standard MCCB mounting slots on DIN rails or panel-mount adapters.
Thermal-magnetic curve and derating
The TM210 overcurrent release combines a thermal element for overload protection and a magnetic element for short-circuit response. The breaker maintains its full 63 A rating through 50 °C; above that, derating is gradual — 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. For panels operating near their upper ambient limit, this derating curve should be applied when sizing the load.