Stranded 12 AWG wire landed bare in a screw clamp or spring terminal frays, loosens and can short to the next point. The Techspan FER-12-10D is a grey insulated single ferrule for 12 AWG (4 mm²) copper stranded wire with a 10 mm pin, sold in a bag of 500. Panel builders and control electricians use these wire ferrules to give every termination a clean, solid pin.
Why panel builders pick it
- Keeps fine strands together so none escape the terminal to cause a short.
- Protects the conductor under compression screw, spring and split-bolt style terminals.
- Grey collar follows the DIN 46228/4 colour code for 4 mm² wire, which speeds inspection.
- Polypropylene insertion funnel, heat resistant to 105°C, guides strands into the barrel.
- Electro-tinned E-copper barrel rated 600 V max; 500-piece bag for production work.
Specifications
| Spec |
Detail |
| Brand |
Techspan |
| Model |
FER-12-10D |
| Type |
Insulated single ferrule, DIN 46228/4 |
| Wire size |
12 AWG / 4.0 mm², copper stranded only |
| Colour |
Grey |
| Pin (barrel) length |
10 mm |
| Overall length |
17 mm |
| Inside dia. / collar dia. |
2.8 mm / 4.8 mm |
| Material |
Tinned E-copper, polypropylene collar (105°C) |
| Rating |
600 V max |
| Pack |
500 pieces |
Pro tip from the counter
Don't sort ferrules by colour alone when a panel mixes brands. Grey means 4 mm² (12 AWG) only under the DIN colour code; ferrules made to the French colour code use grey for 2.5 mm², so check the size printed on the bag before a mixed bin gets refilled.
Best for: control panel building, PLC and VFD terminations, DIN rail terminal blocks, machine and OEM wiring
Downloads: Techspan wire management catalogue (PDF)
Order online for delivery anywhere in Canada from Vaughan, ON, or call (905) 553-7171. Shops buying by the case can request a quote.