The A9K24202 is a 2-pole Acti9 iK60N miniature circuit breaker rated 2 A at 30 °C with a C-curve magnetic trip (5 to 10 × In). The thermal-magnetic trip unit handles both sustained overloads (bimetal strip) and short-circuit events (solenoid). Rated insulation voltage is 440 V AC, so it's fine on 230/400 V three-phase panels. The C-curve is the default for general-purpose distribution — lighting, socket outlets, small motor loads — where inrush is moderate. For a 2 A rating that means motor starting currents up to roughly 20 A peak before the magnetic trip clears it.
Clip-on mount to standard 35 mm DIN rail. Width is 36 mm (4 × 9 mm pitches), depth 78.5 mm, height 85 mm. Tunnel terminals accept 1 to 25 mm² rigid or 1 to 16 mm² flexible cable; tighten to 2 N·m. Strip length 14 mm. The ON/OFF toggle provides local indication; padlocking device available for lockout/tagout. Pollution degree 2 (non-conductive, occasional condensation) and overvoltage category II cover normal residential and commercial panel conditions.
Limitation class 3 per that standard — the let-through energy is low enough to protect downstream equipment in most fault scenarios. Suitability for isolation confirmed, meaning you can safely use it as a disconnection point with the toggle off.