It uses a TM120M thermal-magnetic overcurrent release, so you get the thermal trip for overloads and the magnetic trip for short circuits in one package. At 415 V it still clears 154 kA, at 440 V it clears 121 kA, and at 500/690 V it drops to 7.5 kA — those higher-voltage ratings tell you this breaker is really at home in low-voltage distribution (up to 480 V nominal) where the fault current is substantial.
The breaker holds 32 A from 40 °C up through 50 °C without derating. At 55 °C it drops to 31 A, at 65 °C to 30 A, and at 70 °C to 30 A. That's a clean thermal curve — if your panel ambient runs under 50 °C, you get full 32 A.
It measures 130 mm high, 76.2 mm wide, and 70 mm deep — a compact footprint for a 3-pole MCCB with this interrupting capacity.