H05V-K, H05V2-K, H07V-K, H07V2-K, PVC Insulated Single Core Flexible Cords

These four are the single core panel wires: H05V-K and H05V2-K at 300/500V, H07V-K and H07V2-K at 450/750V, all built to EN 50525-2-31, the standard that replaced DIN VDE 0281-3 and 0281-7. The designation reads in three parts. The 05 or 07 sets the voltage class. The V marks PVC insulation, and the second V2 marks a heat resistant PVC compound good for 90°C instead of the 70°C of the plain V grade. The -K at the end is class 5 finely stranded copper, which is why the wire bends inside a panel without springing back; a -U would be a single solid strand and a -R a coarser class 2 stranding. There is no sheath on any of them, so they go inside enclosures, trunking and conduit, never clipped to a wall in the open and never used as a trailing lead. H05V-K and H05V2-K cover 0.5 mm², 0.75 mm² and 1.0 mm², with 1.5 mm² and 2.5 mm² also made in the 300/500V block for control circuits. H07V-K and H07V2-K start at 1.5 mm² and go up to 240 mm², which is where switchgear, motor starters, relay and instrument panels and rectifier wiring live. The V2 grades turn up wherever a panel runs warm: drive enclosures, lighting gear, heater controls, machine tools. Both grades carry VDE approval, the same constructions are CCC certified as 60227 IEC 06 (RV) and 60227 IEC 08 (RV-90) for the Chinese market, and the conductor is available bare or tinned. Colours follow HD 308 S2, and cut lengths, ferrules and printed markers can be added on request.