Insulated Fork Lug | 1.5mm – 6mm
Insulated Fork Lug | 1.5mm – 6mm
Blog Article
Here’s a detailed guide to insulated fork lugs (fork terminals) in the 1.5mm² – 6mm² range, covering specifications, standards, crimping tools, and applications:
Insulated Fork Terminals (1.5mm² – 6mm²) – Key Features
Material:
Conductor: Tin-plated copper (for corrosion resistance).
Insulation: Color-coded PVC or nylon (provides strain relief and electrical insulation).
Blade (Fork) Width: Typically 3.2mm, 4.8mm, or 6.3mm (for screw/stud connections).
Standards: Compliant with DIN 46237, UL 486A, or IEC 60998.
Color Coding & Size Chart
| Wire Size (mm²) | Insulation Color | AWG Equivalent | Blade Width (mm) |
|---|---|---|---|
| 1.5 mm² | Blue | 16–14 AWG | 3.2mm, 4.8mm |
| 2.5 mm² | Blue/Yellow | 14–12 AWG | 4.8mm, 6.3mm |
| 4.0 mm² | Gray/Yellow | 12–10 AWG | 6.3mm |
| 6.0 mm² | Black | 10–8 AWG | 6.3mm, 8.2mm |
Types of Insulated Fork Terminals
Standard Fork (U-Shaped) – Quick disconnect for screw terminals.
Flanged Fork – Prevents over-insertion into terminals.
Heat-Shrink Fork – Waterproof seal for harsh environments.
Recommended Crimping Tools
For 1.5–6mm²:
Hand Crimpers:
Weidmüller PZ 6 R (ratchet mechanism).
Phoenix Contact ATC 1.5-6 (adjustable dies).
Ratchet Crimpers:
Klein Tools 1006 (for fork/spade terminals).
Ideal 30-429 (industrial-grade).
Die Type: Use fork-specific dies (avoid ring terminal dies for best results).
Common Applications
Electrical panels (quick-release terminal blocks).
Automotive wiring (battery, alternator, grounding).
Industrial controls (relays, contactors).
Top Brands & Part Numbers
| Brand | Series | Example Part Number |
|---|---|---|
| TE Connectivity | PIDG Series | 2-520184-2 (4mm², blue) |
| Phoenix Contact | AI 1,5-6 | 3200056 (1.5–6mm² range) |
| Weidmüller | Crimfix Z | 9041340000 (fork, insulated) |
| 3M | Scotchlok | 560054 (heat-shrink fork) |
Where to Buy?
Industrial Suppliers: RS Components, Digi-Key, Mouser.
Automotive Stores: AutoZone (for smaller sizes).
Online: Amazon, eBay (check for UL certification).https://store.unigulfsupply.com/product/fork-lug/