What is the difference between these solar panel connectors?

[mrel]

Hi
What is the different between MC4,MC3, IP67,IP65 solar panel connectors?
mrel

 

[davenn]

IP67,IP65

Those are IP ratings ... moisture/dust ... google IP ratings

MC3 and 4 dunno, did you google them ?

 

[bertus]

Hello,

Have a look at these pages for the MC3 and MC4 connectors:
https://sinovoltaics.com/learning-center/components/mc1-mc2-mc3-and-mc4-connector-explained/
https://www.tritec-energy.com/en/accessories/multi-contact-mc3-mc4-connector/

And for the IP ratings, have a look here:
https://www.dsmt.com/resources/ip-rating-chart/

Bertus