The Schneider Electric A9A19804 is an Acti9 iOF+SD 24 low-level auxiliary contact — an OC or fault contact with a single C/O signal contact, rated 2...100 mA at 24 V DC.
The 2...100 mA at 24 V DC rated current defines the switching capability of this auxiliary contact — it is designed for low-level signal circuits, not power loads. The 1 C/O (changeover) contact composition provides both normally-open and normally-closed poles in one package, suitable for sending a fault or status signal back to a controller or Smartlink interface. Compliance with EN/IEC 60947-5-1 (control circuit devices) and EN/IEC 60947-5-4 (low-energy contact performance) means the contact is tested for reliable switching in the milliampere range typical of PLC inputs and electronic interfaces.
Integration Notes
The 9 mm width means it takes one module space in the distribution board. Spring-loaded terminals accept 0.5...1.5 mm² rigid or flexible cable; strip length is 10 mm. The mechanical indicator gives local visual confirmation of contact state without needing to meter the circuit.