1-1971920-1 is a SOLARLOK PV4-PM connector kit featuring a socket-female configuration with socket-contact, designed for panel mount photovoltaic applications. This connector is rated for 1500V DC operation and supports wire sizes from 4 mm² to 6 mm² (AWG 12-10), with current ratings of UL 20A/TÜV 35A at 4.0mm² and UL 30A/TÜV 40A at 6.0mm². The precision-engineered contact structure achieves low contact resistance of 0.35mO to minimize power loss, while the IP68 protection rating (1m/24 hours) ensures waterproof performance. Common applications include solar inverters, combiner boxes, micro inverters, and DC optimizers, providing reliable power connections in demanding solar energy installations.