 LONDON--BUSINESS WIRE--nVent Electric plc NYSE:NVT nVent, a global leader in electrical connection and protection solutions, has launched several new nVent SCHROFF Calmark VITA Extractors for rugged applications in the aerospace and defense industries. An extractor is a small lever that inserts or releases conduction cooled assemblies, the enclosure part which protects the printed circuit board. A printed circuit board is a collection of electronic components delivering power to electro 