The Schneider Electric A9KF21206BQ is an Acti9 K60 miniature circuit breaker (MCB) from the Acti9 range, rated 6 A with a B-curve trip characteristic and 2-pole configuration. It breaks 10 kA Icn at 415 V AC 50/60 Hz per EN/IEC 60898-1 — that means it clears fault currents up to 10,000 A under standard conditions, enough for final sub-distribution boards in residential or light commercial panels where the prospective short-circuit current stays under that threshold. The thermal-magnetic trip unit handles overloads on the thermal side and short-circuits on the magnetic side, with a 20,000-cycle electrical and mechanical endurance rating.
Panel integration
Tunnel terminals accept 1–25 mm² rigid or 1–16 mm² flexible copper, with a 2 N·m tightening torque and 14 mm strip length. IP20 finger-safe front; pollution degree 2 for normal indoor environments.