The TM210 designation means the thermal element is fixed at 63 A (the frame rating), with magnetic pickup adjustable between 5x and 10x In — so for a 63 A breaker, the instantaneous trip point can be set between 315 A and 630 A. Interrupting capacity is the headline number here: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. Thermal derating is published: it holds 63 A up to 50 °C ambient, then drops to 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. Plan your load margin accordingly.
The breaker measures 101.6 mm wide, 130 mm tall, and 70 mm deep — a 4-pole MCCB that fits a standard DIN-rail mount. Power loss is listed at 17.3 W maximum. In a multi-breaker lineup, that heat adds up — account for it in your thermal calculation if the panel is sealed or has limited convection.