Copper Lugs – Copper Compression Lugs – Tubular Copper Cable Lugs
A1 Metallics is a leading manufacturer and exporter of Copper Lugs, Copper Compression Lugs, and Tubular Copper Cable Lugs. Our copper lugs are the industry-standard solution for making reliable, low-resistance terminations between copper conductors and electrical equipment. Available in standard and custom configurations, our lugs comply with international standards including DIN, IEC, NEMA, UL, and BS specifications.
Whether you need standard copper cable lugs for panel wiring or heavy-duty tubular copper compression lugs for power cable terminations, A1 Metallics delivers consistent quality, precise dimensions, and superior conductivity in every piece.
Types of Copper Lugs
Copper Compression Lugs (Standard Barrel Lugs)
Standard copper compression lugs (also called copper cable lugs, copper crimp lugs, or copper terminal lugs) consist of a tubular barrel for crimping onto the conductor and a flat tongue/palm with a mounting hole. Used universally for cable terminations in panels, switchgear, motors, and distribution boards.
Also known as: Copper Crimp Cable Lugs | Copper Terminal Lugs | Copper Lug Connectors | Copper End Lugs | Copper Cable Terminals | Copper Wire Lugs | Copper Electrical Lugs | Copper Barrel Lugs | Copper Eye Lugs
Tubular Copper Lugs (Heavy Wall / Ring Lugs)
Tubular copper lugs feature a thick-wall tube barrel providing superior mechanical strength for high-current applications, heavy cables, and busbars. Manufactured by hot extrusion or deep drawing for maximum density and conductivity.
Also known as: Copper Ring Lugs | Copper Heavy-Duty Lugs | Copper Power Lugs | Copper Bus Lugs | Copper Thick-Wall Lugs | Copper Extrusion Lugs
Long Barrel Copper Lugs
Extended barrel (long barrel) copper lugs provide additional crimp length for double-crimp or extra-secure connections. Preferred in renewable energy installations and railway applications.
Bi-Metal Copper Lugs (Copper-Aluminium)
Bi-metallic lugs with copper palm and aluminium barrel for connecting aluminium conductors to copper busbars. Friction-welded or electron-beam welded interface prevents galvanic corrosion.
Tinned Copper Lugs
Electro-tin plated copper compression lugs for use in marine, coastal, and corrosive environments. Tinning prevents oxidation and ensures reliable long-term contact resistance.
Related Terms
Copper Cable Lugs | Copper Crimp Lugs | Copper Ring Terminals | Copper Terminal Connectors | Copper Eye Terminals | Copper Ferrule Lugs | Copper Ground Lugs | Copper Earth Lugs | Copper Bootlace Ferrules | Copper Tube Connectors | Copper Splice Connectors | Copper Compression Terminals | Copper Wire Connectors | Copper Battery Lugs | Copper Wiring Lugs | Copper End Terminals | Copper Tinned Lugs
Copper Grades & International Equivalents
| Grade | US (UNS/ASTM) | European (EN) | Indian (IS) | British (BS) | Application |
|---|---|---|---|---|---|
| ETP Copper (C11000) | UNS C11000 / ASTM B187 | CW004A (Cu-ETP) | IS 191 ETP | BS C101 | Standard compression lugs, most common grade |
| Oxygen-Free Copper (C10200) | UNS C10200 / ASTM B170 | CW008A (Cu-OF) | IS 191 OF | BS C103 | Premium lugs for sensitive electronic applications |
| DHP Copper (C12200) | UNS C12200 | CW024A (Cu-DHP) | IS 191 DHP | BS C106 | Brazed lug assemblies, plumbing-grade |
| Tinned Copper (C11000 + Sn) | ASTM B33 | CW004A Tinned | IS 5131 | BS 4109 | Marine and corrosive environment lugs |
US Standard Copper Compression Lug Size Table (NEMA/UL)
| Wire Size (AWG/kcmil) | Wire Size (mm²) | Barrel OD (mm) | Barrel Length (mm) | Hole Diameter | Tongue Width (mm) | Standard |
|---|---|---|---|---|---|---|
| #14 AWG | 2.5 | 5.2 | 16 | 1/4″ (6.4mm) | 14 | NEMA CC1 / UL 486A |
| #12 AWG | 4 | 5.8 | 18 | 1/4″ (6.4mm) | 14 | NEMA CC1 / UL 486A |
| #10 AWG | 6 | 6.5 | 19 | 5/16″ (7.9mm) | 16 | NEMA CC1 |
| #8 AWG | 10 | 7.9 | 22 | 3/8″ (9.5mm) | 19 | NEMA CC1 |
| #6 AWG | 16 | 9.5 | 25 | 3/8″ (9.5mm) | 22 | NEMA CC1 |
| #4 AWG | 25 | 11.5 | 28 | 1/2″ (12.7mm) | 25 | NEMA CC1 |
| #2 AWG | 35 | 13.5 | 32 | 1/2″ (12.7mm) | 28 | NEMA CC1 |
| #1 AWG | 50 | 15.5 | 35 | 1/2″ (12.7mm) | 32 | NEMA CC1 |
| #1/0 AWG | 55 | 17.0 | 38 | 9/16″ (14.3mm) | 35 | NEMA CC1 |
| #2/0 AWG | 70 | 19.0 | 41 | 9/16″ (14.3mm) | 38 | NEMA CC1 |
| #3/0 AWG | 95 | 21.0 | 44 | 5/8″ (15.9mm) | 41 | NEMA CC1 |
| #4/0 AWG | 120 | 23.5 | 48 | 5/8″ (15.9mm) | 44 | NEMA CC1 |
| 250 kcmil | 127 | 25.0 | 51 | 3/4″ (19.1mm) | 50 | NEMA CC1 |
| 300 kcmil | 152 | 27.5 | 54 | 3/4″ (19.1mm) | 54 | NEMA CC1 |
| 350 kcmil | 177 | 30.0 | 57 | 3/4″ (19.1mm) | 57 | NEMA CC1 |
| 400 kcmil | 203 | 32.0 | 60 | 7/8″ (22.2mm) | 60 | NEMA CC1 |
| 500 kcmil | 253 | 35.5 | 64 | 1″ (25.4mm) | 66 | NEMA CC1 |
| 600 kcmil | 304 | 39.0 | 70 | 1″ (25.4mm) | 70 | NEMA CC1 |
| 750 kcmil | 380 | 43.5 | 76 | 1-1/8″ (28.6mm) | 76 | NEMA CC1 |
| 1000 kcmil | 507 | 49.5 | 83 | 1-1/4″ (31.8mm) | 83 | NEMA CC1 |
Note: Dimensions are nominal reference values. Actual dimensions may vary by product series and manufacturer. Custom sizes available on request.
European Standard Copper Compression Lug Size Table (DIN / IEC)
| Wire Size (mm²) | AWG Equiv. | Barrel ID (mm) | Barrel Length (mm) | Bolt Hole (mm) | Tongue Width (mm) | Standard |
|---|---|---|---|---|---|---|
| 1.5 mm² | #16 AWG | 2.0 | 12 | M4 (4mm) | 10 | DIN 46235 / IEC 61238-1 |
| 2.5 mm² | #14 AWG | 2.5 | 14 | M4 (4mm) | 12 | DIN 46235 / IEC 61238-1 |
| 4 mm² | #12 AWG | 3.0 | 16 | M5 (5mm) | 14 | DIN 46235 |
| 6 mm² | #10 AWG | 3.5 | 18 | M6 (6mm) | 16 | DIN 46235 |
| 10 mm² | #8 AWG | 4.5 | 20 | M6 (6mm) | 18 | DIN 46235 |
| 16 mm² | #6 AWG | 5.5 | 22 | M8 (8mm) | 20 | DIN 46235 |
| 25 mm² | #4 AWG | 6.5 | 25 | M8 (8mm) | 22 | DIN 46235 |
| 35 mm² | #2 AWG | 7.5 | 28 | M10 (10mm) | 25 | DIN 46235 |
| 50 mm² | #1/0 AWG | 9.0 | 32 | M10 (10mm) | 28 | DIN 46235 |
| 70 mm² | #2/0 AWG | 10.5 | 35 | M10 (10mm) | 32 | DIN 46235 |
| 95 mm² | #3/0 AWG | 12.0 | 38 | M12 (12mm) | 36 | DIN 46235 |
| 120 mm² | #4/0 AWG | 13.5 | 42 | M12 (12mm) | 40 | DIN 46235 |
| 150 mm² | 300 kcmil | 15.0 | 45 | M12 (12mm) | 44 | DIN 46235 |
| 185 mm² | 350 kcmil | 16.5 | 48 | M16 (16mm) | 48 | DIN 46235 |
| 240 mm² | 500 kcmil | 19.0 | 52 | M16 (16mm) | 54 | DIN 46235 |
| 300 mm² | 600 kcmil | 21.0 | 56 | M20 (20mm) | 60 | DIN 46235 |
| 400 mm² | 750 kcmil | 24.5 | 62 | M20 (20mm) | 68 | DIN 46235 |
| 500 mm² | 1000 kcmil | 27.5 | 68 | M24 (24mm) | 76 | DIN 46235 |
| 630 mm² | — | 30.5 | 75 | M24 (24mm) | 85 | DIN 46235 |
Note: Dimensions are nominal reference values per DIN 46235 guidelines. Actual dimensions vary by product series. Custom conductor sizes and hole configurations available on request.
Standards & Compliance
- IEC 61238-1 – Compression and mechanical connectors for power cables
- DIN 46235 – Compression cable lugs (European standard)
- NEMA CC1 – Electric power connections for substations (US standard)
- UL 486A-B – Wire connectors for use with copper conductors (US)
- BS 4579 – Performance of mechanical and compression joints (UK)
- IS 8309 – Compression type terminals for aluminium and copper conductors (India)
Surface Finish Options
- Bare Bright Copper
- Electro-Tin Plated (most common)
- Hot-Dip Tinned
- Silver Plated (for high-temperature applications)
- Nickel Plated
Applications
- Power cable terminations in switchgear and panel boards
- Motor and transformer connections
- Distribution boards and junction boxes
- Renewable energy installations (solar and wind)
- Marine and offshore electrical systems
- Railway and traction systems
- Industrial machinery and automation
- Earthing and grounding systems
Why Choose A1 Metallics?
- ✅ Complete Size Range – 1.5mm² to 630mm² DIN standard; #14 AWG to 1000 kcmil NEMA standard
- ✅ ISO 9001:2015 Certified – Consistent quality on every production batch
- ✅ Dual Standard Compliance – IEC/DIN European standard AND NEMA/UL American standard available
- ✅ Multiple Surface Finishes – Bare, tinned, silver-plated, nickel-plated options
- ✅ Custom Configurations – Double-hole tongue, long barrel, offset tongue, 90° angle lugs available
- ✅ In-house Manufacturing – Hot extrusion, cold forging, and machining for complete control
- ✅ Competitive Pricing – Direct manufacturer with no middlemen
- ✅ Global Export – Supplied to electrical distributors and OEMs across 40+ countries
- ✅ 25+ Years Experience – Trusted by leading switchgear and panel manufacturers globally
Request a Quote for Copper Lugs
Looking for Copper Compression Lugs, Tubular Copper Lugs, or custom copper cable terminations? Contact A1 Metallics with your size requirements (mm² or AWG), standard (DIN/NEMA), quantity, and surface finish for a competitive quote.
📧 sales@a1metallics.com | 📞 +91-22-43449300/27
