It is a 4-pole device (4P) with a 40 kA Icu breaking capacity at 240 V AC, 25 kA at 415 V, and 20 kA at 440 V, all per IEC 60947-2.
The TM-D trip unit gives you thermal-magnetic protection: the 'L' function handles overloads (thermal, adjustable) and the 'I' function handles short-circuits (magnetic, fixed). Mechanical durability is 20,000 cycles; electrical durability ranges from 20,000 cycles at 440 V at half rated current down to 5,000 cycles at 690 V at full rated current. For a distribution breaker that sees infrequent switching, that's plenty — but if this is in a frequent-switching application (like a welder or a capacitor bank), the electrical endurance at your actual load current is what matters.