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Burndy KPA4CTP SCRULUG™ 1-Hole Copper Mechanical Lug, 1/4" Stud
The Burndy KPA4CTP is a SCRULUG™ 1-Hole copper mechanical lug designed to terminate conductors ranging from 14 AWG (Sol) to 4 AWG (Str) onto a 1/4" stud. Machined from solid copper for dependable conductivity, this one-piece pressure bar lug provides a secure mechanical connection for grounding, bonding, and equipment wiring in commercial and industrial electrical systems. Because it uses a set-screw pressure bar rather than a crimp, it can be installed or removed in the field with standard hand tools, making it a practical option for panel work, service upgrades, and maintenance where a compression tool is not available.
Key Features
- 1/4" Stud: Sized to mount securely to grounding and bonding hardware, bus bars, and equipment lugs using a 1/4" stud.
- Wire Range: Accepts 14 AWG (Sol) through 4 AWG (Str) conductors, giving electricians flexibility across a range of circuit sizes on a single terminal.
- Solid Copper Construction: The copper terminal body delivers excellent electrical conductivity and long-term durability in demanding commercial and industrial installations.
- 1-Hole Configuration: A single-hole pad simplifies mounting to ground bars, bus bars, panelboards, and other equipment with a single fastener.
- One-Piece Mechanical Design: This pressure bar mechanical lug installs in the field without crimping tools; the bar tightens down to clamp and secure the conductor.
- Field-Serviceable: Because the conductor is held by a pressure bar rather than a permanent crimp, the connection can be inspected, re-tightened, or re-terminated as needed.
- SCRULUG™ Series: Part of Burndy's established SCRULUG™ line of one-piece mechanical connectors.
Technical Specifications
- Trade Name: SCRULUG™
- Wire Range: 14 AWG (Sol) - 4 AWG (Str)
- Stud Size: 1/4"
- Hole Configuration: 1-Hole
- Terminal Material: Copper
Typical Applications
- Grounding and Bonding Connections
- Bus Bar and Ground Bar Terminations
- Panelboard and Switchgear Wiring
- Commercial and Industrial Electrical Installations
- Motor and Equipment Grounding
- Service Entrance and Maintenance Work
Why Burndy KPA4CTP?
Burndy is a recognized name in electrical connectors, and the SCRULUG™ KPA4CTP mechanical lug reflects that standard with solid copper construction built for dependable, secure terminations. Its one-piece mechanical design and broad 14 AWG (Sol) to 4 AWG (Str) wire range make it a practical, field-installable choice for professional electricians handling grounding and bonding work. For contractors who need a copper lug that can go on and come back off with ordinary tools, rather than a one-time compression fitting, the KPA4CTP's pressure bar design offers straightforward, repeatable terminations on the job site.
Manufacturer Resources
Spec Sheet
Product Specs
- list_batch:
- BURNDY-20260915
- Product Type:
- Mechanical Lug
- Trade Name:
- SCRULUG™
- Product Material:
- Copper
- Product Size:
- 1/4"
- Department:
- Electrical
- Product Subgroup:
- Lugs & Terminals
- Product Group:
- Wire Connectors & Terminals
Burndy KPA4CTP – Frequently Asked Questions
1) What wire sizes does the Burndy KPA4CTP lug accept?
The KPA4CTP SCRULUG takes conductors from 14 AWG solid up to 4 AWG stranded, so one terminal covers everything from small control and bonding wire to a 4 AWG ground. That range is why electricians stock it instead of carrying a separate lug for each size.
2) Do I need a crimp tool to install the Burndy KPA4CTP?
No crimper needed. It is a one-piece pressure bar mechanical lug: the bar tightens down over the conductor with standard hand tools, so you can terminate it in a panel without dragging a compression tool and dies to the job.
3) Is the KPA4CTP safe to use on copper grounding conductors?
The terminal body is machined solid copper, so it is a copper-to-copper connection on grounding and bonding conductors, which is what you want for conductivity and to avoid a dissimilar-metal joint. For aluminum conductors you need a lug rated AL9CU or aluminum-specific instead.
4) Can a mechanical lug be removed and reused, or is it a one-time termination?
Because the conductor is clamped by a set-screw pressure bar rather than crushed in a permanent crimp, the connection on the SCRULUG KPA4CTP can be opened, inspected, re-tightened, or re-terminated. That is the main reason to pick a mechanical lug over a compression lug on service upgrades and maintenance work where the wire may move again.
5) What is SCRULUG and what is the KPA4CTP typically used for?
SCRULUG is Burndy's line of one-piece mechanical connectors. The KPA4CTP version gets used for grounding and bonding, bus bar and ground bar terminations, panelboard and switchgear wiring, motor and equipment grounding, and service entrance or maintenance jobs in commercial and industrial systems.
6) Where can I get the Burndy KPA4CTP spec sheet for a submittal?
Burndy publishes a spec sheet for the KPA4CTP at https://hubbellcdn.com/specsheet/BRDY-KPA4CTP-SPEC-EN.pdf, which is what to attach when a submittal or inspector asks for the manufacturer data on the lug.
How fast can I get the Burndy KPA4CTP 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 KPA4CTP come with a warranty?
Absolutely. The Burndy KPA4CTP 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 KPA4CTP?
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