Burndy K4A29U-4N Terminal 4 Conductor 250 kcmil 1/2″ Stud Hole

Description

Product Overview

The Burndy K4A29U-4N is a high‑performance rectangular terminal engineered for industrial electrical systems. Measuring 4 inches in length, 3.69 inches in width, and 1.19 inches in height, the unit weighs approximately 12 ounces, making it compact yet sturdy enough for heavy‑duty applications. Constructed from premium‑grade aluminum alloy with a copper‑compatible rating, the terminal supports a wide range of conductor sizes up to 250 kcmil, providing flexibility for both aluminum and copper wiring projects.

Designed with a 1/2‑inch stud hole, the K4A29U-4N facilitates quick and secure mounting onto standard panels and busbars. The terminal’s recommended tightening torque of 275 lb‑in ensures a reliable, low‑resistance connection that minimizes heat buildup and prolongs service life. Its rectangular form factor optimizes space utilization within crowded electrical enclosures, allowing engineers to maximize panel density without sacrificing performance.

Burndy’s commitment to safety and compliance is reflected in the UL Listed and CSA Certified status of this terminal. These certifications guarantee that the product meets rigorous industry standards for electrical safety, durability, and environmental resistance. Whether used in commercial facilities, manufacturing plants, or utility substations, the K4A29U-4N delivers consistent performance under demanding conditions.

Additional features include a corrosion‑resistant coating that protects against moisture and chemical exposure, and a robust mechanical design that resists vibration and shock. The terminal’s precise machining ensures uniform stud alignment, reducing the risk of mis‑torquing and simplifying installation for electricians and technicians.

Usage

This terminal is ideally suited for a variety of industrial wiring scenarios, such as control panels, motor starters, switchgear assemblies, and distribution boards. Its ability to accommodate both aluminum and copper conductors makes it a versatile choice for retrofits and new installations alike. The 4‑conductor capacity allows for multi‑circuit connections, simplifying complex wiring layouts and reducing the number of separate components required.

In harsh environments where temperature fluctuations, dust, and vibration are common, the K4A29U-4N maintains its electrical integrity. The terminal’s robust construction and protective coating guard against corrosion and mechanical wear, ensuring reliable operation even in outdoor or marine‑adjacent installations. Proper torque application, as specified by the 275 lb‑in recommendation, is critical to achieving optimal contact pressure and preventing loosening over time.

Installation best practices include cleaning the conductor strands, applying a suitable anti‑oxidant compound, and verifying stud alignment before tightening. Electricians should use a calibrated torque wrench to achieve the specified torque, and periodic inspections are recommended to confirm that connections remain secure throughout the equipment’s service life.

Why Choose Us

Burndy has a legacy of over a century in electrical component manufacturing, and the K4A29U-4N reflects that heritage of quality and innovation. Each terminal undergoes rigorous testing, including tensile strength, electrical resistance, and thermal cycling, to ensure it meets or exceeds industry standards. This dedication to reliability reduces downtime and maintenance costs for end users.

Our manufacturing process incorporates precision stamping and CNC machining, delivering tight tolerances and consistent dimensions across every batch. The use of high‑grade aluminum alloy, combined with a copper‑compatible rating, provides a cost‑effective solution without compromising performance. The terminal’s UL and CSA certifications further assure customers of its safety and compliance in regulated markets.

Beyond the product itself, Burndy offers comprehensive technical support and a responsive customer service team. Clients can access detailed installation guides, torque charts, and compatibility tables to streamline project planning. Should any issues arise, our after‑sales service provides prompt assistance, replacement parts, and warranty coverage to protect your investment.

Key Features

• Four‑conductor capacity supports up to 250 kcmil aluminum or copper wire, simplifying complex wiring layouts.
• 1/2‑inch stud hole enables fast, secure mounting on standard panels and busbars.
• UL Listed and CSA Certified for guaranteed safety and compliance in industrial applications.
• Corrosion‑resistant coating protects against moisture, chemicals, and harsh environmental conditions.
• Dedicated technical support and warranty service ensure reliable after‑sales assistance.

FAQ

What conductor sizes can the K4A29U-4N accommodate?

The terminal is rated for conductors up to 250 kcmil, covering a broad range of aluminum and copper wire gauges commonly used in industrial power distribution.

Is the terminal suitable for outdoor installations?

Yes. The corrosion‑resistant coating and robust mechanical design make the K4A29U-4N appropriate for outdoor or marine‑adjacent environments, provided the enclosure offers adequate protection from direct exposure.

How do I ensure the correct tightening torque?

Use a calibrated torque wrench set to the recommended 275 lb‑in. This torque value guarantees optimal contact pressure, minimizing resistance and heat buildup while preventing over‑tightening that could damage the stud.

Can I use this terminal with both aluminum and copper conductors?

Absolutely. The terminal’s material composition and design are compatible with both aluminum and copper conductors, offering flexibility for new installations or upgrades where mixed conductor types are present.

What warranty does Burndy provide for this product?

Burndy offers a standard limited warranty covering manufacturing defects for a period of one year from the date of purchase. Contact our support team for warranty claims and additional service options.