MC4 connectors are used for connecting solar panels. MC4 connectors ensures solar panel wire does not disconnect accidentally when the cables are pulled.   1 panel MC4 T-type connector connects 1 solar panel from 10 watt to 400 watts. IP 67 rating makes it waterproof and dust proof for outdoor use. 

Features 

• Rated Current：30A
• Rated Voltage：1000V(TUV) 600V(UL)
• Test Voltage:8KV(TUV50HZ, 1min)
• Contact Resistance:<0.5mΩDegree of ProtectionIP67
• Working Temperature:-40°C to 85°C
• Flammability Rating:UL 94-V0
• Safety Class:Ⅱ
• Pin Dimensions:Φ4mm
• Insulation material to prevent from electric sock
• IP 67 rated protection degree makes it waterproof.