The Schneider Electric A9R14225 is an Acti9 iID residual current circuit breaker (RCCB) — a 2-pole, voltage-independent device rated for 25 A continuous current with 300 mA earth-leakage sensitivity. The 73.5 mm depth fits standard modular enclosures; the white toggle and left-side neutral position are consistent with the Acti9 panel layout.
For circuits with VFDs, UPS systems, or rectified loads, you'd need a Type A or Type B device instead. Voltage-independent tripping technology means the device doesn't need an auxiliary supply to detect a residual current — the fault energy itself drives the trip mechanism. That's a reliability advantage: it still protects even if the neutral is lost upstream.
Clip-on DIN rail mounting, 36 mm wide (4 modules). Rated for outgoer position in the system — downstream of the main switch or MCB. The instantaneous trip means no intentional time delay; coordination with upstream devices depends on the upstream breaker's characteristics, not the RCCB's delay.