美国采购需求：太阳能电缆，直流连接器，6mm2电缆，交流连接器，快速关机，4mm2电缆

I'm looking to clarify some details regarding specific product variants. Could you explain the key differences between two models? Understanding their unique features will help me better assess which would suit our needs. Additionally, I'd like to confirm whether the part numbers correspond to sets of male and female connectors. Are there distinct part numbers for each type, or do they share a common code? Having this information will greatly assist in our decision-making process. Thank you!