DT Series Cable LUGS

Cable lugs decide whether a joint stays reliable for years or becomes a maintenance issue, based on three factors: material pairing, crimp geometry and conductor match.

Lug families

• DT copper: seamless copper barrel, tin-plated, for copper-to-copper joints (switchgear, transformers, panel feeders)
• DTL-2 bimetal: friction-welded copper-aluminium transition inside the barrel, used where aluminium cable meets copper busbar, preventing galvanic corrosion
• DL aluminium: light, low-cost option for all-aluminium circuits

Sizing
The barrel is sized to conductor cross-section (6-300+ mm²), not the bolt hole. Stranded and solid conductors of the same size have different diameters, and Class 5 flexible conductor with a ferrule changes the fit further, so sending the exact conductor spec ensures a correct match.

Crimping
A crimp is a cold weld by compression. The die must match the barrel and conductor exactly, wrong sizing causes cracking or loose voids. Follow the die chart and crimp sequence, then inspect indentation depth. A good crimp can outperform a bolted joint in high-vibration settings like gensets or traction equipment.

Specification checklist

• Conductor material, cross-section and stranded class
• Lug family (DT / DTL-2 / DL)
• Palm hole diameter and width
• Barrel type (standard, bell-mouthed, inspection hole)
• Plating (tin standard; silver/nickel for special environments)
• Die chart and crimp sequence for the tool in use