The A9D87416 is a Schneider Electric Acti9 iC60 RCBO — a 4-pole residual-current circuit breaker with overcurrent protection, rated 16 A with a B tripping curve and 30 mA earth-leakage sensitivity.
The 30 mA earth-leakage threshold provides personnel protection per IEC 60364, catching fault currents to ground before they reach a dangerous level. Breaking capacity is 6000 A Icn at 380...415 V AC per EN/IEC 61009-2-1, and 6 kA Icu per EN/IEC 60947-2. The thermal-magnetic trip unit combines a bimetal strip for overload protection (16 A continuous) with a solenoid for short-circuit protection. The 250 A surge current rating confirms it can close onto a fault without welding contacts.
That's four pole widths — standard for a 4P RCBO. Depth is 78 mm, height 86 mm. Tightening torque 2 N.m. IP40 in an enclosure, IP20 bare. Local signalling shows ON, OFF, and fault trip status. The toggle control gives a clear visual of the contact position — useful for panel walk-downs. Connection pitch is 9 mm between poles, matching standard RCBO busbar spacing.