What is the difference between NYA, NYAF and H05VV-F (TTR) cables?
Compare solid single-core NYA, flexible panel-wiring NYAF, flexible multi-core H05VV-F (TTR) and NYM installation cables in a structured table.
What is the main difference between NYA, NYAF and TTR (H05VV-F) cables? NYA (H07V-U) is a single-core solid copper wire for fixed conduit installation; NYAF (H07V-K) is a single-core fine-stranded flexible copper wire for switchgear and control panel wiring; TTR (H05VV-F) is a multi-core flexible PVC-sheathed cable for appliances and movable connections.
NYA, NYAF, TTR and NYM comparison table
| Feature | NYA Cable (H07V-U / H07V-R) | NYAF Cable (H07V-K) | TTR Cable (H05VV-F) | NYM Installation Cable |
|---|---|---|---|---|
| Conductor Class | Solid (Class 1) or stranded (Class 2) copper | Fine-stranded flexible copper (Class 5) | Fine-stranded flexible copper (Class 5) | Solid or stranded copper (Class 1/2) |
| Core & Sheath Structure | Single core, PVC insulation only (un-sheathed) | Single core, PVC insulation only (un-sheathed) | Multi-core (2–5+ cores), PVC insulation + PVC outer sheath | Multi-core with filler + PVC outer sheath |
| Voltage Rating (U0/U) | 450/750 V (H05V-U below 1.5 mm²: 300/500 V) | 450/750 V (H05V-K below 1.5 mm²: 300/500 V) | 300/500 V | 300/500 V |
| Typical Application | Fixed building wiring inside conduits | Internal wiring of electrical and PLC control panels | Appliances, extension leads and light workshop tools | Fixed surface, damp-area and tray installations |
| Category Link | NYA Cables | NYAF Cables | TTR Cables | NYM Antigron Cables |
Why is NYAF used instead of NYA inside control panels?
Control panel wiring requires tight bending radii inside slotted trunking and frequent termination on DIN-rail switchgear. Class 5 fine-stranded NYAF (H07V-K) bends without placing mechanical stress on device terminals and resists vibration when terminated with insulated bootlace ferrules.
Frequently asked questions
What do H07V-U, H07V-K and H05VV-F mean?
Under harmonized European cable designations, H07V-U denotes solid single-core PVC wire (NYA, 450/750 V), H07V-K denotes flexible fine-stranded single-core PVC wire (NYAF, 450/750 V), and H05VV-F denotes flexible multi-core PVC-insulated and PVC-sheathed cord (TTR, 300/500 V).