This is a Cinch Jones / Beau P330CCT, 30 Pin Male Cable Mount Connector ~ 10A @ 250V AC.

NOTE: May be Cinch Jones or Beau Brand.

This connector is New Old Stock from a bulk case with no retail packaging.Features:

• Voltage Rating: 250V AC RMS Maximum
• Current Rating: 10A Maximum
• Polarized Contacts to Prevent Wrong-Way Insertion
• Solder Lug Termination