300 MCM Copper Compression Lug – 1-Hole, 3/8" Stud, Long Barrel | Conversions Tech
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SKU: 210-09865
1000 in stock
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300 MCM Copper Compression Lug – 1-Hole, 3/8" Stud, Long Barrel | Conversions Tech
The Conversions Tech 300 MCM Copper Compression Lug is a premium electrical connector engineered for secure, low-resistance terminations in high-current power systems. Designed specifically for 300 MCM copper conductors, this lug features a single 3/8-inch stud hole and a long barrel design that enhances mechanical stability and electrical performance.
Manufactured from seamless electro-tin plated copper, this tinned copper compression lug delivers excellent corrosion resistance for long-term reliability in both indoor and outdoor environments. The distinctive white color code allows for quick identification and alignment with industry-standard color-coding systems, reducing installation time and minimizing errors.
Key Features
- Seamless Electro-Tin Plated Copper: Provides high conductivity with superior corrosion resistance.
- 300 MCM Conductor Size: Precision engineered for heavy-duty copper conductors used in power distribution.
- 1-Hole Pad with 3/8" Stud: Ensures a secure, stable connection to electrical equipment and bus bars.
- Long Barrel Design: Supports multiple crimps for improved pull-out strength and consistent electrical contact.
- Chamfered Barrel Entry: Simplifies conductor insertion and speeds up installation.
- Tin-Plated Finish: Protects against oxidation and corrosion while maintaining low resistance.
- White Color Code: Enables fast visual identification during installation.
- High Voltage Capability: Rated up to 35 kV for demanding electrical applications.
Common Applications
- Power distribution panels and switchgear
- Industrial electrical equipment and control panels
- Commercial and utility electrical installations
- Renewable energy systems and battery storage
- Grounding and bonding applications using large copper conductors
Technical Specifications
| Material | Seamless Electro-Tin Plated Copper |
| Conductor Material | Copper |
| Conductor Size | 300 MCM |
| Stud Size | 3/8 Inch |
| Pad Holes | 1 |
| Barrel Type | Long Barrel |
| Barrel Entry | Chamfered |
| Color Code | White |
| Overall Length | 3.469 Inch |
| Barrel Length | 1.688 Inch |
| Barrel Size (ID × OD) | 0.66 Inch × 0.812 Inch |
| Die Index | I-66 |
| Pad Size | 1.25" L × 1.088" W × 0.157" Thick |
| Voltage Rating | 35 kV |
| Temperature Rating | 90°C |
Frequently Asked Questions (FAQs)
What wire type is this compression lug designed for?
This lug is designed specifically for 300 MCM copper conductors and is not intended for aluminum wire.
What is the advantage of a long barrel compression lug?
A long barrel supports multiple crimps, increasing mechanical strength, reducing resistance, and improving long-term reliability.
What stud size does this lug fit?
This compression lug fits a standard 3/8-inch stud or bolt.
Why is the lug tin plated?
Tin plating protects the copper from oxidation and corrosion while preserving excellent electrical conductivity.
What does the white color code indicate?
The white color code identifies the lug as compatible with 300 MCM conductors for quick visual verification.
What crimping tool should be used?
Use a crimp tool rated for 300 MCM copper lugs and follow proper die selection, including Die Index I-66.
Is this lug suitable for outdoor installations?
Yes. The tin-plated copper finish provides corrosion resistance suitable for indoor and outdoor environments.
What is the voltage rating?
This compression lug is rated up to 35 kV when installed correctly.
What is the maximum operating temperature?
This lug is rated for continuous operation up to 90°C.
Where are these lugs commonly used?
They are commonly used in power distribution systems, industrial equipment, renewable energy installations, and utility infrastructure.
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.
