The A3XC11 is an A3-series contact block with one normally-open and one normally-closed contact (1NO+1NC), used as an electrical accessory for control-circuit switching in industrial panels.
Sourcing Reality
The block snaps onto a standard DIN rail and mates with A3-series actuator heads or enclosures — a common fit for panel builders retrofitting a control station or adding auxiliary contacts to an existing stack.