The A9D27210 is a Schneider Electric Acti9 iC60 RCBO — a combined residual-current circuit breaker with overcurrent protection in a 2-pole, 36 mm wide package that clips onto DIN rail. It protects a single-phase outgoing circuit against overloads, short-circuits, and earth faults, all in one unit. The integrated earth-leakage protection trips at 30 mA — the standard sensitivity for personal shock protection in residential and commercial distribution boards. Breaking capacity is 10 kA Icn (service) and 15 kA Icu (ultimate) at 220...240 V AC, 50 Hz, per EN/IEC 61009-2-1 and EN/IEC 60947-2.
For BOM-freeze planning: the Acti9 iC60 series is Schneider's mainstream RCBO line, widely specified across Europe and Asia. No imminent replacement or form-factor change is signaled. If you need a compliance documentation package (CE, NF, VDE, KEMA-KEUR, IMQ), those marks are listed on the part itself.
Mounts on DIN rail via the clip-on mechanism — 4 pitches of 9 mm (36 mm total width). IP40 in a distribution enclosure, IP20 for the terminal area — standard for panel-mount gear. The toggle gives local ON/OFF/fault-trip indication. Tropicalisation class 2 means it handles 95 % RH at 55 °C without derating.