Product Description
The Square D DCC C-646 (Model DA-600) is a professional-grade mechanical terminal lug engineered for high-capacity electrical distribution. Precision-machined from high-strength 6061-T6 extruded aluminum alloy, this lug is designed to terminate heavy-duty main feeders in Square D panelboards, switchgear, and safety switches. It features a robust single-barrel design capable of securely holding conductors ranging from 2 AWG up to 600 kcmil (MCM).
Every DCC C-646 is finished with electro-tin plating to ensure exceptionally low contact resistance and to provide a permanent barrier against atmospheric 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: Square D (Schneider Electric)
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Part Number: DCC C-646
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Model: DA-600
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Conductor Range: 2 AWG up to 600 kcmil (MCM)
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Material: 6061-T6 High-Strength Aluminum Alloy
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Finish: Electro-Tin Plated (Corrosion Resistant)
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Rating: Dual-Rated AL9CU (Compatible with Al/Cu)
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Voltage Rating: 600V (Standard) / Up to 35kV (High-Voltage with proper insulation)
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Temperature Rating: 90°C (194°F)
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Mounting Configuration: Single Hole (Typically fits 1/2-inch Stud)
Key Features & Benefits
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OEM Compatibility: Engineered specifically for the terminal pads and busbar spacings of Square D electrical equipment, ensuring code-compliant installation.
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Superior Range-Taking: A versatile design that handles a massive wire range from 2 AWG branch circuits to 600 MCM main power feeds.
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Mechanical Reliability: Features a rugged internal hex set-screw that provides maximum clamping force—eliminating the need for expensive hydraulic crimping tools.
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Bimetallic Safety: The tin-plated surface prevents galvanic corrosion when connecting copper conductors to the aluminum lug body, reducing risks of thermal failure.
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Industrial Durability: Machined from extruded aluminum to provide higher structural integrity under thermal expansion than standard cast lugs.
