The A9A15923 is a white screw shield from the Schneider Electric Acti9 iCT range — an insulation accessory designed to cover the live busbar fingers on 3-pole and 4-pole distribution blocks carrying 40 to 63 A. It clips over the screw terminals after wiring, providing finger-safe touch protection inside the consumer unit or panelboard.
Fits the Acti9 iCT 3P and 4P busbar assemblies in the 40-63 A current range. The shield snaps onto the screw terminal bank after the conductors are torqued down. White colour helps with visual identification of the neutral or shielded phase in a panel that uses colour-coded accessories.