Skip to content

1-Hole Copper Compression Lug 300 MCM | 5/8" Bolt, 90°C

Sale price $4.24

Shipping calculated at checkout

🛡 Trade Pricing Program Contractors, wholesalers & distributors save 15–30% Apply — 60 seconds Sign In

SKU: 210-09809

1000 in stock

Shop with confidence

  • Same-day shipping by 2PM ET
  • UL / CSA listed products
  • Net 30-60 terms available
  • Engineering desk support
  • Competitive cross-reference pricing
  • Ach Direct Debit
  • American Express
  • Diners Club
  • Discover
  • Mastercard
  • PayPal
  • USDC
  • Visa
Crimp It Right
300 MCM → Die Index 66 White
This lug crimps with any 12-ton U-groove tool using the index-66 die — ours, or your matching die: Burndy® U30RT — Milwaukee® 49-12-U300C — ILSCO® ILD-66, or T&B® Color-Keyed® index 66. The die embosses “66” into the finished crimp for inspection.

The Conversions Tech 1-Hole Copper Compression Lug is a short barrel compression terminal designed for 300 MCM copper conductors in high-current electrical systems. Engineered for utility, industrial, and commercial power distribution applications, this lug provides secure termination points for switchgear, transformers, panelboards, and bus connections. The electro-tin plated seamless copper construction delivers consistent conductivity while resisting oxidation in standard operating environments.

Specifications

  • Conductor size: 300 MCM copper
  • Bolt/stud size: 5/8 inch
  • Pad dimensions: 1.25 inch length x 1.189 inch width
  • Pad holes: 1
  • Barrel type: Standard straight, short barrel
  • Barrel length: 1.063 inch
  • Overall length: 2.9 inch
  • Wire strip length: 1.125 inch
  • Die index: I-66
  • Voltage rating: 35 kilovolt
  • Temperature rating: 90°C
  • Material: Electro-tin plated high-strength seamless copper
  • Color code: White
  • Cable entry: Chamfered
  • Features: Sight window (sight hole)

Cross-Reference

Equivalent in form and function to compression lugs from major electrical manufacturers. Conversions Tech specifications match industry-standard dimensional and electrical ratings for 300 MCM one-hole copper lugs, providing compatible termination solutions at reduced cost.

FAQ

What crimping die do I need for this 300 MCM lug?

This lug requires an I-66 die index for proper compression. Verify your crimping tool compatibility with the I-66 die specification before installation.

Is this lug rated for 90°C conductor ampacity?

Yes, the 90°C temperature rating supports full ampacity per NEC Table 310.16 for 300 MCM copper conductors when installed in equipment rated for 90°C terminations.

Can I use this lug with aluminum conductors?

No, this lug is specified for copper conductors only. The material compatibility, barrel dimensions, and crimp specifications are engineered specifically for 300 MCM copper cable.

Specifications

Part Number 210-09809
Category Electrical connector
Weight 0.6 lb (est.)
HS Code 8536.90.4000

Direct Cross-Reference — One-Hole Long Barrel, 300 kcmil, 5/8 Inch stud

CT P/N 210-09809 is a dimensional and electrical equivalent replacement for:

Manufacturer Part Number
Burndy (Hubbell) YA30

All trademarks are property of their respective owners and are used for compatibility identification only. Conversions Tech products meet the same UL 486A dimensional and electrical standards at distributor-direct pricing.

Why Pros Buy Direct from Conversions Tech

Engineered in the USA. Our U.S.-based engineering team designs and specifies our core product lines, and every product we carry — designed in-house or built to our exact specifications by certified partner factories — is quality-verified before it ships. UL/CSA listed where required, NEC compliant.

Cross-reference savings. Direct equivalents to Burndy, Hubbell, and other OEM part numbers at up to 30% less — same specs, same certifications, without the big-brand markup.

Real technical support. Need a torque spec, die reference, or an OEM quote? You’ll speak directly with the Conversions Tech engineering desk — not a script reader — for instant answers, custom kitting, and private-label options.

Fast US fulfillment. Orders in by 2PM ET ship same day from our US warehouse, nationwide ground and expedited.

Online — let me help you!
CT
CONVERSIONS TECH

Professional-grade electrical components, networking cables, and solar hardware for contractors, distributors, and OEM partners. Same-day shipping from our U.S. distribution centers.

1 (307) 206-0534

CS@ConversionsTech.com

Products
Compression lugs Networking & fiber AV & power cable EMT fittings Grounding & bonding Solar & energy Enclosures
Resources
Technical library Lug sizing guide Fiber optic guide AV cable guide Starlink Mini guide AWG conversion chart Cross-reference tool
Company
About & certifications OEM program Marine & RV OEM Pro Pricing program Become a distributor 5-year warranty Contact us
© 2026 Conversions Tech Inc · Wyoming, United States
UL 486A/B CSA NEC 2023 ABYC E-11 IEEE 837
Back to top
Request a Quote

Get product updates and exclusive pricing

Complete your termination