Under IEC 60947-2, the ultimate breaking capacity (Icu) reaches 15 kA at 400–415 V AC and 30 kA at 230–240 V AC. For DC applications, the Icu is 25 kA at 125 V DC (2-pole series) and 40 kA at 125 V DC (3-pole series). These figures let the panel designer coordinate selectivity with upstream devices — the 15 kA Icu at 400 V is the figure to match against the main breaker's let-through.
The 4-pole footprint occupies 8 modules of 9 mm pitch, yielding a total width of 72 mm, depth of 73 mm, and height of 81 mm. The toggle actuator provides local ON/OFF indication and a contact position indicator confirms isolation status — the breaker is suitability for isolation certified per IEC 60947-2.