It carries a TM220 thermal-magnetic release — the thermal element handles overloads, the magnetic element handles short-circuits — and delivers a 187 kA breaking capacity at 240 V AC, which drops to 121 kA at 415 V and 75.6 kA at 440 V.
At 415 V the breaker still holds 121 kA, and at 440 V it's 75.6 kA. At 500 V and 690 V the rating settles at 17 kA — still respectable for a 32 A frame, but the gap between 75.6 kA and 17 kA is where you need to check your available fault current. The thermal derating is flat from 40 °C through 50 °C at 32 A; at 55 °C it drops to 31 A, and at 70 °C it's 30 A. That's a shallow derating curve, so you don't lose much headroom in a warm enclosure.
At 76.2 mm wide (3 inches), 130 mm tall, and 70 mm deep, this MCCB fits a standard 3-pole MCCB footprint on a DIN rail or panel-mount base.