Burndy QA28B 1-Hole Heavy Duty...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$55.53
Burndy QA28B 1-Hole Heavy Duty Copper Terminal Lug

Burndy QA28B 1-Hole Heavy Duty Copper Terminal Lug

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Model: QA1CB

In Stock (leaves warehouse same day if ordered before 3pm ET)

$55.53
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Burndy QA28B 1-Hole Heavy Duty Copper Terminal Lug

The Burndy QA28B is a heavy duty 1-hole solid copper terminal lug engineered for dependable mechanical termination of 3/0-4/0 AWG stranded copper conductors. This QIKLUG™ series terminal is available with a 1/4\" or 3/8\" mounting stud, giving installers flexibility to match the lug to the application while relying on the same solid copper construction and single clamping element design. Every QA28B lug is unplated copper and UL Listed to UL468A-468B standards, making it a reliable choice for demanding industrial and commercial electrical terminations.

Key Features

  • Stud Size Options: Available with a 1/4\" or 3/8\" stud to suit a range of mounting and hardware requirements.
  • Durable Construction: Solid copper terminal body delivers excellent electrical conductivity and long-term corrosion resistance.
  • Single Clamping Element: 1-hole mechanical termination design simplifies field installation and reduces assembly time.
  • Wire Range: Accepts 3/0-4/0 AWG stranded copper conductors for heavy-duty power and grounding connections.
  • Mechanical Termination: Screw-down mechanical connection provides a secure, code-compliant termination without special crimping tools.
  • Finish: Unplated copper construction throughout the QA28B family.
  • Compact Footprint: Sized for tight enclosure and panel clearances typical of switchgear and panelboard applications.

Certifications & Compliance

  • UL Listed
  • Meets UL468A-468B Industry Standards
  • RoHS Exempt

Technical Specifications

  • Mounting Holes: 1
  • Plated (Yes or No): N
  • CULUS: N
  • CSA Certified: N
  • Stud Size (in): 1/4 or 3/8
  • Installation Torque: 250
  • UL Listed: Y
  • UL Recognized: N
  • Thickness (in): 1/4
  • Number of Holes: 1
  • Copper Stranded (Range): 3/0 AWG-4/0 AWG
  • Connector Type: Terminal
  • Type of Plating: Unplated
  • Trade Name: QIKLUG™
  • Product Description: Copper Terminal, Heavy Duty, 1 Hole, 3/0-4/0 AWG (Str), 1 Screw

Typical Applications

  • Heavy-Duty Electrical Terminations
  • Grounding and Bonding Connections
  • Switchgear and Panelboard Wiring
  • Industrial Power Distribution
  • Motor and Equipment Lead Connections

Why Burndy?

Burndy is a trusted name in electrical connectors, and the QIKLUG™ QA28B family reflects that reputation with solid copper construction, precise 1-hole mechanical termination, and UL Listed performance to UL468A-468B standards across both stud size options. Choose Burndy for reliable, code-compliant terminations for industrial and commercial electrical work where consistent conductivity and secure mechanical connections matter.

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Manufacturer Resources

Spec Sheet

Product Specs

Wire Size:
4/0 AWG
Mounting Holes:
1
Termination Method:
Mechanical
Height (in):
1.31
D - in:
1.06
Hole Size (Fraction):
13/32
Pad Width (in):
1.00
Plated (Yes or No):
N
UPC:
781810314760
Length (in):
2.25
CULUS:
N
CSA Certified:
N
D or Diameter (Fraction) (in):
1-1/16
Industry Standard(s):
UL468A-468B
N (Fraction):
17/32
Connector Type:
Terminal
Installation Torque:
250
N (in):
0.53
Thickness:
0.25
Height (Fraction) (in):
1-5/16
Hole Size (in):
0.41
UL Listed:
Y
Ul Recognized:
N
Copper Stranded (Range):
3/0 AWG-4/0 AWG
Length (Fraction):
2-1/4
Number Of Holes:
1
ROHS Compatible:
Exempt
Type of Plating:
Unplated
Navy Cable Size (Range):
150 (61) Navy-200 (61) Navy
Product Type:
Mechanical Lug
Trade Name:
QIKLUG™
list_batch:
BUR-20260916
Product Material:
Copper
Connection Type:
Mechanical
Product Finish:
Unplated
Listing:
UL Listed
Standards:
UL468A-468B
Department:
Electrical
Product Group:
Wire Connectors & Terminals
Product Subgroup:
Lugs & Terminals

Burndy QA1CB – Frequently Asked Questions

1) What wire size does the Burndy QA28B QIKLUG terminal lug accept?
The QA28B takes 3/0 to 4/0 AWG stranded copper. It is a one-conductor, one-screw mechanical lug, so anything smaller than 3/0 stranded copper will not clamp reliably and anything larger will not enter the barrel. For Navy cable it covers 150 (61) Navy through 200 (61) Navy.
2) What torque do I tighten the Burndy QIKLUG QA28B set screw to?
250 inch-pounds on the single clamping screw. Hit that value with a torque wrench or screwdriver adapter; an under-torqued mechanical lug on 4/0 copper is the usual cause of a hot connection at the pad.
3) Is this Burndy copper lug UL Listed for use in a panelboard or switchgear?
The QA28B is UL Listed to UL468A-468B, which is the standard set for wire connectors, and it is RoHS exempt. Note it is not CSA Certified and not cULus marked, so on a Canadian job requiring CSA you will need a CSA-marked lug instead.
4) What is the difference between the Burndy QA1CB and QA28B QIKLUGs?
Only the stud size. QA1CB is the 1/4 inch stud version and QA28B is the 3/8 inch. Both are unplated solid copper, 1-hole, single-screw heavy duty terminals for 3/0-4/0 AWG stranded copper and both are UL Listed to UL468A-468B. Pick by the hardware on the equipment pad you are landing on.
5) How much room does the QA28B lug need inside an enclosure?
Overall it runs 2-1/4 inches long, 1-5/16 inches high, with a 1 inch pad width and a 1-1/16 inch barrel diameter. The tongue is 1/4 inch thick, and the hole centre sits 17/32 inch from the pad end. Lay those numbers against your gutter space and the bending radius of 4/0 copper before you commit the lug to a tight can.
6) Do I need a crimp tool to install the QA28B, or is it a set screw lug?
No crimper. It is a mechanical, screw-down termination with one clamping element, so all you need is a hex key or driver and a torque tool set to 250 inch-pounds. That makes it the practical choice for field terminations and service work where hauling a hydraulic crimper is not worth it.
7) Is the Burndy QA28B plated or bare copper, and does that matter outdoors?
It is unplated solid copper, no tin or silver plate. Bare copper is fine in dry indoor gear, but in damp or corrosive locations, or anywhere you are landing on an aluminium bus, plan on a joint compound and expect the copper to patina. If your spec calls for a tin-plated lug, this is not the part.
8) Is one QA28B enough to terminate a single 4/0 ground conductor, or do I need a two-hole lug?
One QA28B lands one 4/0 conductor on one bolt: it has a single mounting hole and a single clamping screw. That suits motor leads, panel feeders and most grounding terminations. Where a spec calls for two-bolt landing to resist rotation on a bus or ground bar, a 1-hole lug will not satisfy it and you need a two-hole version.
How fast can I get the Burndy QA1CB delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Burndy QA1CB come with a warranty?
Absolutely. The Burndy QA1CB is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Burndy QA1CB?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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