Relay or Selanoid switch

This is a Relay or Solenoid Switch like from a tornado.
Specifically, this is a heavy-duty electromechanical relay used in the aircraft's secondary power system or engine control circuits.
The Details
• The Connector Pins: At the top, you can see several thick metal pins. These would plug into a specialized wiring harness inside the aircraft. These are designed to be "Line Replaceable Units" (LRUs), meaning a technician could quickly swap a faulty one out during maintenance.
• The Yellow Marking: The yellow "crown" or "M" shaped stamp is a common inspection mark used by European aerospace contractors (like MBB or Rolls-Royce/Turbo-Union). It indicates the part passed its final quality and continuity tests before being installed.
• The Housing: The weathered, brownish-copper look on the lower half is likely the result of heat or exposure to hydraulic fluids/turbine oils over years of service.
What did it do?
In an aircraft like the Tornado, relays like this act as remote-controlled switches. When the pilot flips a switch in the cockpit, a small amount of electricity triggers this relay, which then "closes" to allow a much larger, high-current flow of electricity to reach components like:
• The Auxiliary Power Unit (APU)
• Fuel pumps
• Hydraulic valves
• Landing gear actuators