Copper Long Barrel One Hole Compression Lug 350 MCM 3/8-inch Bolt Size
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SKU: 210-98076
1000 in stock
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Conversions Tech 350 MCM Copper Compression Lug – Long Barrel, Single 3/8" Hole
The Conversions Tech Copper Compression Lug is engineered for 350 MCM conductors, delivering superior performance and reliability in high-current, industrial-grade electrical systems. Designed with a single 3/8-inch bolt hole and long-barrel construction, it ensures a secure mechanical and electrical bond ideal for heavy-duty terminations.
Manufactured from seamless electro-tin-plated copper, this lug offers exceptional conductivity and corrosion resistance, even in challenging environments. Its red color code provides fast visual identification of 350 MCM wire size, while the chamfered barrel entry simplifies conductor insertion during installation.
Rated for 35 kV and operating up to 90 °C, the Conversions Tech 350 MCM lug meets the demands of power distribution, grounding, renewable-energy, and industrial control systems.
Key Features
- Seamless Electro-Tin-Plated Copper: Delivers high conductivity and long-term corrosion protection.
- Red Color Code: Clearly identifies 350 MCM conductor size for quick field verification.
- Single 3/8-Inch Stud Hole: Fits standard terminals, busbars, and switchgear hardware.
- Long-Barrel Construction: Maximizes contact area for improved current flow and mechanical strength.
- I-71 Die Index: Matches standard crimping dies for consistent, UL-compliant terminations.
- Chamfered Barrel Entry: Simplifies wire insertion and improves installation speed.
- High-Voltage Rating: Operates safely up to 35 kV in industrial applications.
- Temperature Rating: Withstands continuous service up to 90 °C.
- Heavy-Duty Design: Supports demanding loads in substations, solar arrays, and large distribution panels.
- Compliance: Meets UL 486A/B and NEC requirements for copper compression connectors.
Technical Specifications
| Material | Seamless Electro-Tin-Plated Copper |
| Color Code | Red |
| Overall Length | 3.873 in (98.4 mm) |
| Barrel Length | 2 in (50.8 mm) |
| Conductor Size | 350 MCM |
| Conductor Material | Copper |
| Stud Size | 3/8 in |
| Voltage Rating | 35 kV |
| Die Index | I-71 |
| Pad Size (L × W × T) | 1.25 in × 1.291 in × 0.187 in |
| Pad Holes | 1 |
| Barrel Type | Long Barrel, Chamfered Entry |
| ID × OD | 0.703 in × 0.89 in |
| Temperature Rating | 90 °C |
Applications
- High-current industrial switchgear and power distribution panels
- Renewable-energy and solar PV systems
- Battery banks and storage arrays
- Grounding and bonding assemblies
- Marine, utility, and heavy-equipment wiring
FAQs (Click to Expand)
1. What conductor size fits this lug?
This model is designed exclusively for 350 MCM copper conductors, ensuring optimal fit and compression strength.
2. Why choose a long-barrel lug?
The long barrel provides more contact area for the crimp, reducing electrical resistance and improving mechanical stability under load.
3. What does the red color code signify?
Red identifies 350 MCM wire size per industry standards, helping installers quickly match lug to conductor.
4. What crimping die should I use?
Use a compatible compression tool fitted with an I-71 die to achieve correct compression and UL-recognized termination.
5. Can I use this lug outdoors?
Yes. The electro-tin-plated copper body resists corrosion and oxidation, making it suitable for outdoor and marine installations.
6. Is it rated for high-voltage systems?
Yes. It is rated up to 35 kV, ideal for medium- and high-voltage distribution circuits.
7. What is the maximum operating temperature?
This lug is rated for continuous service up to 90 °C (194 °F), maintaining full conductivity under heat.
8. Does it meet UL or CE standards?
Yes. It conforms to UL 486A/B and CE specifications for compression connectors and is RoHS compliant.
9. How should I prepare the conductor before crimping?
Clean the wire strands, remove oxidation, insert fully into the chamfered barrel, and crimp firmly using the specified die to ensure full contact.
10. Can it be used in AC and DC circuits?
Yes. The 350 MCM copper lug handles both AC and DC applications, including battery storage and inverter systems up to 35 kV and 170 A.
Why Choose Conversions Tech
Conversions Tech manufactures premium-grade compression lugs and grounding hardware that meet UL and NEC requirements for professional installations. Each connector is tested for conductivity, tensile strength, and corrosion resistance to deliver dependable performance in mission-critical systems. Explore the full range of Conversions Tech compression lugs.
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.
