Product Description
The Thomas & Betts GR 6-350 is a high-performance, single-barrel mechanical terminal lug designed for superior conductivity and structural integrity. Part of the industry-trusted Blackburn line, this lug is precision-machined from high-strength 6061-T6 aluminum alloy. It is engineered to handle a broad range of conductors, from 6 AWG up to 350 kcmil (MCM), making it a versatile choice for power distribution in industrial, commercial, and residential environments.
Every GR 6-350 is finished with premium electro-tin plating, providing a permanent barrier against oxidation and galvanic corrosion. As a dual-rated (AL9CU) connector, it is UL-listed for the safe termination of both copper and aluminum conductors at operating temperatures up to 90°C.
Technical Specifications
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Manufacturer: Thomas & Betts (Blackburn / ABB)
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Part Number: GR 6-350 (GR6-350)
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Conductor Range: 350 kcmil (MCM) down to 6 AWG
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Material: 6061-T6 High-Strength Aluminum Alloy
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Plating: Electro-Tin Plated
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Drive Type: Internal Hex / Socket Screw
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Rating: Dual-Rated AL9CU (Compatible with Al/Cu)
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Voltage Rating: 600V (Standard) / Up to 2000V for specific UL applications
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Temperature Rating: 90°C (194°F)
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Mounting Configuration: Single Hole (Fits 3/8-inch Stud)
Physical Dimensions
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Overall Length: ~2.50 inches
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Overall Width: ~1.50 inches
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Overall Height: ~1.50 inches
Key Features & Benefits
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Broad Range-Taking Ability: A single lug handles everything from 6 AWG to 350 MCM, significantly reducing the variety of inventory needed on the job site.
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Corrosion Resistance: The electro-tin plating ensures low contact resistance and prevents bimetallic corrosion when connecting copper conductors to the aluminum body.
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Mechanical Efficiency: Equipped with a rugged set-screw that provides high-pressure termination—eliminating the need for expensive hydraulic crimping tools or specialized dies.
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Versatile Application: Ideal for use in panelboards, bus bars, transformer secondaries, and heavy-duty grounding systems.
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Industrial Durability: Extruded 6061-T6 alloy construction offers superior mechanical strength and thermal performance under heavy electrical loads.
