NOS USGI surplus. This cross references to DRS environmental systems and the FSC on the tag is 4520 for space heating equipment so I think this is for a DRS portable duct heater for aircraft.
NOS USGI TE-3666 7350-0140-0002 Aircraft GPU Heater connector 5995-00-763-0365
$533.0
Brand
Burton Electrical
Manufacturer Part Number
TE-3666
condition
Used