Rated 2 A at 50 °C per EN/IEC 60947-2, this 4-pole breaker protects all three phases and neutral in a single module. The 20 kA Icu at 240 V AC phase-to-phase gives it the interrupting capacity to handle high-fault-current points in a panel; at 415 V the rating drops to 10 kA Icu, and at 440 V to 6 kA Icu — so the voltage at the fault point governs whether this breaker holds coordination with the upstream device. The 75 % Ics rating (15 kA at 240 V, 7.5 kA at 415 V, 4.5 kA at 440 V) tells you it can be reclosed after clearing a fault at those levels and still carry rated current — useful for a panel where you want to restore power without swapping the breaker after a downstream short.
The 72 mm width (8 x 9 mm pitches) and 81 mm height fit a standard modular enclosure grid; depth of 73 mm leaves room for wiring behind the rail.