SOLARLOK PV4-S Connectors TE Connectivity's (TE) SOLARLOK PV4-S Connectors meet a minimum 1500V rating with IP68 protection. The connectors are an upgrade from TE's SOLARLOK PV4 and exceed 3 times the IEC standard aging tests. SOLARLOK PV4-S has been tested to assure reliable, and safe connections of solar arrays. The connectors use industry-standard crimp tooling that is used by installers today. Applications include solar panels, inverters, micro inverters, and DC optimizers.