Detailed Description

Overview
This cable lug is engineered to terminate a 630 mm² stranded copper conductor and provide a secure bolted connection via a 20 mm (M20) stud or bolt. It is made from annealed high-conductivity copper and finished with tin plating to resist corrosion and preserve excellent electrical contact over long service life.

Key Features & Benefits

• High Conductivity Annealed Copper: Reduces resistance and ensures efficient current flow.

• Tin Plating / Electro-tin Finish: Offers protection against oxidation and corrosion under normal conditions.

• Seamless Tube / Robust Barrel: Ensures mechanical integrity, uniform compression, and good contact over conductor.

• Bell Mouth / Flared Entry + Inspection Hole: Many designs include a bell-mouth opening and inspection window to ease strand insertion and allow confirmation that the conductor is properly seated before crimping (as seen in Superlec’s 630 × 20 lug) 

• Standard Compliance & Tooling: Matches common standards for copper compression lugs and is supported by standard crimping die sets that cover up to 630 mm² 

• Application Versatility: Ideal for large power distribution, transformer feed, switchgear terminations, busbar connections, grounding systems.

Specifications

Installation / Usage Guidelines

1. Strip insulation carefully to correct length, preserving conductor strands.

2. Insert the bare conductor fully into the lug barrel; use inspection window (if included) to confirm proper seating.

3. Use the correct crimping die / tool rated for 630 mm² copper lug to achieve a uniform, solid crimp.

4. Bolt the lug onto the M20 stud / bolt with appropriate washer and torque (do not exceed recommended torque).

5. Verify mechanical stability and electrical continuity after installation.

6. In demanding or corrosive environments, periodic inspection of the lug for loosening, oxidation, or wear is advisable.

Cautions / Tips

• Always use the proper crimp tool / die for 630 mm² — improper tooling compromises the joint reliability.

• Avoid overtightening the M20 stud — excessive torque may deform the lug or damage conductor.

• If connecting to dissimilar metals (e.g. copper lug connecting to aluminum busbars), consider using bimetal or transition lugs to prevent galvanic corrosion.