0-1971862-2
Tyco PV4 SOLARLOK Cable Coupler 4.0 - 6.0mm² Female Plus

Tyco-Connectors for Photovoltaik
the Simple Processing cable coupler
housing inclusive crimp-contact for 4.0 and 6.0mm²; AWG12-10 Solar Cable
Current Rating up to 35A for 4.0mm², up to 40A for 6.0mm²
for Cable Outer Diameter  5.5 - 6.0mm
Mating face according to MC4

enclosed is a female contact
Polarity Coding PLUS