Amphe-PV H4 Plus Solar Connectors Amphenol Industrial Amphe-PV H4 Plus Solar Connectors are single-pole power connectors that are designed to exceed the performance of the UTX and H4 family of PV connectors. The Amphe-PV H4 Plus is dual-certified at 1500VDC to UL 6703 and IEC 62852. Designed for use in photovoltaic PV modules, inverters, and installations, these robustly constructed connectors are reliable, durable, and stable over a lifetime. The connectors offer robust thermal shock performance 3x above that of UL requirements, exceeds UL dry heat and damp heat exposure requirements by 2x, and surpasses UL humidity and freeze thermal cycling robustness requirements by 3x, making them extremely robust in the field.