The GS2AP84 is a terminal shroud from the Schneider Electric TeSys range — a 4-pole protection accessory designed to cover the line-side terminals on disconnect switches rated 1250 A. It mounts over the switch terminals in a panel or enclosure to maintain IP2X finger-safe clearance during maintenance access.
The 1250 A rating matches the continuous current capacity of the switch it shields. The 4-pole configuration tells you it covers all four poles of a 3-phase + neutral disconnect. The IEC standard designation means the shroud is designed to the clearance and creepage distances defined in IEC 60947 — the same standard the base switch was tested to, so the assembly maintains its original SCCR and isolation coordination.