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Bare copper compression lug with single hole and long barrel

Burndy

Burndy YAD27M20E34 3/0 AWG Copper Lug Connector

SKU CH-3NQE-0DVJJ

A single-hole copper lug connector for 3/0 AWG wire, crimp-terminated with a tin-plated barrel rated to 600 V and 302 °F

  • Product typeElectrical Connectors
  • Overall length5
  • Main materialCopper
  • Electrolytic copper construction delivers high conductivity
  • Single-hole design simplifies crimp termination
  • Long brazed barrel ensures secure mechanical grip
  • Tin-plated contact resists corrosion at 302 °F
  • UL 467 listed for 600 V applications

3/0 AWG Copper Lug Connector

The Burndy YAD27M20E34 is a single-hole compression lug made from electrolytic copper with a tin finish. It accepts 3/0 AWG wire and is rated for 600 V at up to 302 degrees F. The barrel measures 0.79 in long with a 0.79 in outside diameter and a brazed seam. The tongue width is 1.14 in.

Upgrade from split-bolt or mechanical lugs

This connector replaces field-assembled split-bolt joints or set-screw mechanical lugs where a permanent, low-resistance crimp is required. The jump is worth it when vibration, thermal cycling or code compliance demand a UL 467 listed compression connection that will not loosen over time. It is not suited for applications needing multi-hole mounting or insulated barrels.

Install with matched die and crimp tool

Installation requires a hydraulic or battery crimper fitted with the correct Burndy die for 3/0 AWG long-barrel lugs; using the wrong die or a hand tool rated for smaller gauges produces an incomplete crimp. The bare copper barrel offers no insulation, so heat-shrink or tape must be added after crimping. The single mounting hole limits orientation flexibility on crowded bus bars.

How it compares

Measured against everything we stock in Wire, Cable & Wiring Supplies, at today’s prices. Recalculated every night.

Price $16.99
Cheaper than about 62% of the 1,610 comparable items (median $25.99).

Specifications

Product
Brand nameBURNDY
Product typeElectrical Connectors
Size & build
Main materialCopper

Questions about this item

What size mounting hole does the 1.14 in tongue of the YAD27M20E34 fit?

The 1.14 in tongue width matches a 3/8 in stud; drill or punch the panel to that diameter and allow clearance for the barrel outside diameter of .79 in.

Which crimp die and compression steps are required for the 3/0 AWG barrel on this lug?

Use a Burndy 3/0 AWG die set; fully seat the wire in the .79 in barrel, then make the recommended number of compressions for a brazed long barrel — partial crimps cause high resistance.

How often should the tin-plated copper contact be inspected or replaced in a 600 V, 302 °F environment?

Inspect annually for discoloration or loosening; the tin finish on copper resists oxidation up to 302 °F, so replacement is only needed if the crimp shows overheating or the barrel cracks.

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