The Schneider XB5AW15G5 is a 22 mm metal pushbutton from the XB5 series, rated for 10 A in AC-15 and DC-13 utilisation categories. That means it's sized for switching inductive loads like contactor coils and small solenoids — the AC-15 rating covers pilot-duty control circuits, while DC-13 covers solenoid valves and brake coils. The NEMA 4X/13 rating tells you the bezel and operator withstand hose-down and corrosive environments, so it fits on a washdown panel or outdoor enclosure.
This part is marked obsolete by Schneider. If you're planning a new panel, look at the current XB5 series (same 22 mm footprint, same NEMA 4X/13) for a drop-in replacement that shares the mounting hole and bezel style; verify the electrical ratings match your circuit.