Nsi Industries GL438 Copper Compression Short Lug 4 Awg

Product Description

The NSI INDUSTRIES GL438 is a tin-plated copper compression short lug designed to terminate a 4 AWG conductor with a single-hole mounting configuration sized for 3/8 inch bolts. The closed barrel design creates a sealed, homogenous bond between the connector and conductor when crimped, producing a connection that resists vibration, moisture, and contamination. Gray color-coding and a legible die index aid quick identification during installation. This lug is installed by licensed electricians in commercial, industrial, and utility power distribution applications.

The GL438 is suited for secondary power distribution in commercial buildings, power plants, and industrial facilities. Its chamfered conductor port allows straightforward conductor insertion before crimping, and the closed barrel keeps the terminated connection protected from environmental exposure. The tin plating over the copper body improves conductivity and provides long-term corrosion resistance in demanding service environments where reliable mechanical and electrical terminations are required.

Key Features

• Tin-plated copper construction for improved conductivity and corrosion resistance
• Closed barrel design seals against moisture and contamination after crimping
• Chamfered conductor port for easy 4 AWG wire insertion
• Single-hole mounting configuration accepts 3/8 inch bolts
• Gray color-coding and die index markings for fast field identification
• Vibration-resistant, mechanically strong crimp bond

Compatibility

Designed as a compression termination lug for 4 AWG copper conductors in secondary power distribution systems, industrial equipment connections, and related electrical applications.

Installation Notes

Installation should be performed by a qualified electrician following applicable NEC requirements. De-energize and lock out the circuit before terminating any conductor. Use a calibrated compression crimp tool sized for the die index marked on the lug barrel. Do not use open-flame or heat methods to seat the connection.

Technical Specifications

• Conductor Size: 4 AWG
• Mounting Hole: 3/8 inch bolt
• Mounting Configuration: One hole
• Material: Tin-plated copper
• Color Code: Gray
• Barrel Type: Closed barrel
• UPC: 662381036049

Standard Information

• Brand: NSI INDUSTRIES
• Manufacturer Part Number: GL438