Multi Contact ConnectorMulti-contact connectors, (MC connectors) : Connecting solar modules together in Parallel can be easy as well, if you have the right products. MC connectors provide a connection between the solar modules and Combiner Boxes. Most solar modules are now manufactured with Multi-contact connectors, (MC connectors, for short) which make for an easy Series connection.
Solar Male & Female Branch Connector:
These waterproof branch connectors make it possible to parallel or series parallel wire PV modules with solar output cables. Maximum current allowed through connectors is 30 amps.