The Schneider Electric A9KR13225 is a 2-pole residual current circuit breaker (RCCB) from the Acti9 ID K series, rated 25 A with 30 mA earth-leakage sensitivity. Its IP20 body is rated for indoor panel use; with an optional modular enclosure it reaches IP40. Rated breaking and making capacity is Idm 500 A / Im 500 A, and the device withstands an 8/20 µs impulse current of 200 A per EN/IEC 61008-1. Pollution degree 2 suits it for normal industrial or commercial environments where only non-conductive pollution occurs.
This RCCB is designated as a group incomer — it sits at the head of a sub-distribution board or as the main residual-current protection for a group of final circuits. The clip-on DIN-rail mount and 36 mm width (4 x 9 mm pitches) make it a direct swap into standard Acti9 distribution boards or any 35 mm DIN-rail enclosure. Terminals accept 1–35 mm² rigid or 1–25 mm² flexible conductors, with a stripping length of 14 mm and tightening torque of 3.5 N·m. The biconnect design allows looping through top or bottom without additional terminal blocks — useful for daisy-chaining downstream MCBs or RCBOs.