The A9FDB7613 is a 2-pole combination fire protection switch and miniature circuit breaker from the iDPN N Arc family. The thermal-magnetic trip mechanism handles both overloads (slow thermal) and faults (fast magnetic). Rated insulation voltage is 400 V, and the short-circuit breaking capacity (Icn) is 6 kA — enough for most final subcircuits in a 400/230 V distribution board. The overvoltage category III rating means it's designed for fixed installations inside the building's main panel, not for outlet-level use. It's 50 Hz only, so don't spec it for 60 Hz systems without checking the manufacturer's derating.
DIN rail mount, 36 mm wide (2 modules), 81 mm tall, 72 mm deep. The tunnel terminals accept screw-clamp wiring up to 2 Nm torque. IP20 means it's for dry indoor panels only — no washdown, no dust. This is a panel-board part, not a field device.