MC4 Y Branch Connectors are 2 to 1 connectors that allow for a safe and simple parallel or serial-parallel connection of PV modules. Available in either 2 female to 1 male, or 2 male to 1 female, and pluggable with single-pole MC4 connectors
XT30U Lipo Power connector, its housing is made with PA and the contact is gold plated, its shape prevents reverse polarity, and when plugged in the connection is super-solid. Advantages: low resistance, slow heating, anti-reverse insertion