Copper Long Barrel Two Hole Compression Lugs 3 AWG 1/4-inch Bolt Size
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SKU: 210-09959
1000 in stock
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Conversions Tech 3/0 AWG Copper Compression Lug – Dual Hole, 1/4-Inch Stud, Long Barrel (White Color Code)
The Conversions Tech Copper Compression Lug is precision-engineered to deliver secure, low-resistance electrical terminations for 3/0 AWG conductors. Featuring a long barrel, dual-hole pad, and ¼-inch stud size, this lug ensures reliable current flow and long-term mechanical strength across industrial, renewable, and commercial installations.
Constructed from high-conductivity tin-plated copper, it resists corrosion and oxidation, even in demanding environments. The vibrant white color code allows fast identification of 3/0 AWG connections, improving workflow efficiency and organization.
UL-Recognized, CE-Certified, and RoHS-Compliant, this heavy-duty compression lug is built to perform where reliability and electrical integrity matter most.
Key Features
- Secure Copper Construction: Seamless, tin-plated copper body provides exceptional conductivity and durability.
- Dual Holes with ¼-Inch Bolts: Ensures vibration-resistant, stable mounting to busbars and terminal blocks.
- Long Barrel Design: Maximizes crimp surface area for superior mechanical bond and current transfer.
- Tin-Plated Finish: Protects against oxidation and electrolytic corrosion for extended service life.
- White Color Code: Quickly identifies 3/0 AWG wire size per industry standards.
- High Voltage Capacity: Rated up to 35 kV for medium- and high-voltage applications.
- Temperature Rating: Performs reliably up to 90 °C in industrial environments.
- Compliance: Meets UL 486A/B and NEC requirements for compression connectors.
Technical Specifications
| Wire Size | 3/0 AWG |
| Stud Size | ¼ inch |
| Color Code | White |
| Overall Length (L) | 61 mm (2.40") |
| Neck Length (L1) | 34.3 mm (1.35") |
| Conductor Length (L2) | 15.9 mm (0.63") |
| Outer Diameter (D) | 14.5 mm (0.57") |
| Inner Diameter (D1) | 9.9 mm (0.39") |
| Hole Diameter (D2) | 7.9 mm (0.31") |
| Width (B) | 22.9 mm (0.90") |
| Hole Spacing (E) | 7.1 mm (0.28") |
| Thickness (F) | 2 mm (0.08") |
| Material | Tin-Plated Copper |
| Temperature Rating | 90 °C |
| Voltage Rating | 35 kV |
| Max Amp Rating | 170 A |
| Certifications | UL Recognized • CE Certified • RoHS Compliant |
Applications
- Power-distribution and switchgear assemblies
- Battery banks and energy-storage systems
- Renewable energy and solar PV installations
- Grounding and bonding connections
- Industrial machinery and HVAC systems
FAQs (Click to Expand)
1. What wire size does this lug fit?
It is specifically designed for 3/0 AWG copper conductors, ensuring a tight, efficient fit and maximum conductivity.
2. Why use a dual-hole design?
The dual-hole pattern prevents rotation under torque and provides superior mechanical stability in high-vibration environments.
3. What does the white color code represent?
White is the standard color identification for 3/0 AWG wire size, making circuit and component identification easy and accurate.
4. Can this lug be used outdoors?
Yes. Its tin-plated finish resists oxidation and corrosion, ensuring long-term performance in outdoor and marine conditions.
5. What crimping tool or die should I use?
Use a hydraulic or mechanical compression tool that matches the manufacturer-recommended die index for 3/0 AWG lugs to achieve UL-approved compression.
6. What is the maximum current rating?
The lug supports currents up to 170 A, depending on installation and environmental factors.
7. What is the operating voltage rating?
It is rated for operation up to 35 kV, making it suitable for medium- and high-voltage applications.
8. Does this lug meet UL standards?
Yes. It is UL Recognized, CE Certified, and RoHS Compliant, meeting international electrical safety requirements.
9. How should the wire be prepared before crimping?
Strip the insulation cleanly, remove any oxidation, insert the wire fully into the barrel, and crimp firmly to achieve a gas-tight seal.
10. Is this lug suitable for both AC and DC systems?
Yes. The 3/0 AWG compression lug is compatible with both AC and DC circuits, including battery and solar power systems up to 35 kV.
Why Choose Conversions Tech
Conversions Tech is a trusted manufacturer of UL-certified electrical connectors and compression lugs. Each product undergoes rigorous testing for conductivity, crimp strength, and corrosion resistance to ensure field-proven reliability. Explore our complete line of compression lugs and grounding hardware.
4 Reasons Pros Buy Direct from Conversions Tech
Headquartered in business-friendly Wyoming, we design, test, and ship every product from inside the United States—delivering genuine “Made-for-America” quality without the big-box markup.
Our in-house team owns every CAD file, mold, and QA station behind our weatherproof boxes, conduit bodies, and power inverters. Vertical control means tighter tolerances, UL-listed safety, and up to 30 % lower cost than private-label imports.
Thousands of SKUs sit ready to go. Orders placed by 2 p.m. ship the same day, keeping contractors, OEMs, and distributors on schedule.
Need a torque spec or an OEM quote at dawn? You’ll speak directly with the Conversions Tech engineering desk—not a script reader—for instant answers, custom kitting, and private-label options.
Bottom line: For rugged, code-compliant electrical solutions shipped fast from a trusted U.S. source, choose Conversions Tech and build it right the first time.
