The A9F06332 is a Schneider Electric Acti9 iC60H miniature circuit breaker — 32 A rated current, 3-pole, B-curve trip characteristic. The 42 kA Icu at 12–133 V AC is the maximum short-circuit current it can interrupt without damage at those voltages; at 400 V AC the Icn is 15 kA per EN/IEC 60898-1, which is the standard domestic/commercial breaking capacity. That 15 kA at 400 V tells you it's rated for distribution boards with moderate fault levels — not for high-fault industrial mains. The thermal-magnetic trip unit covers both overload (thermal bimetal) and short-circuit (magnetic coil). It's certified to both EN/IEC 60947-2 (industrial) and EN/IEC 60898-1 (household), so it can be specified in either context. The 3-pole configuration (3P) switches all three phases simultaneously, which is standard for three-phase distribution. DIN-rail mounting (snap-on) means it clips directly onto the standard 35 mm rail in any distribution board or sub-panel.
Dimensions: 91 mm high, 54 mm wide, 78.5 mm deep. The 54 mm width (3 x 18 mm per pole) is standard for a 3P MCB on DIN rail — it occupies 6 x 9 mm pitches. The toggle control and trip indicator give visual status without needing to open the panel door.