IMPA: 851041

Heavy Duty Marine Earthing Clamp (IMPA 851041)

Our marine earthing clamps (IMPA 851041) are essential welding accessories designed for the demanding conditions of shipbuilding and offshore repair. Built with high-conductivity copper alloy jaws and a robust compression spring, these ground clamps ensure a reliable electrical connection between the welding equipment and the workpiece, minimizing voltage drop and preventing heat buildup. The corrosion-resistant construction is specifically suited for the salty, humid marine environment, offering long service life even with daily use on deck or in dry docks.

Both professional welders and ship engineers will appreciate the secure cable connection and insulated handle, which provide safety and ease of use. Whether you are performing emergency repairs or scheduled fabrication work, this earthing clamp delivers consistent performance. As part of our complete line of IMPA 85 welding equipment, this ground clamp is a trusted choice for marine ship chandler and ship supply requirements.

Key Features

Technical Specifications

SpecificationValue
TypeEarthing / Ground Clamp
IMPA Code851041
Current Rating600 A (Duty Cycle 35%)
Jaw Opening0 – 25 mm (0 – 1 in)
MaterialCopper alloy, nickel-plated
InsulationHigh-grade PVC handle
Cable ConnectionBolt-on for cables up to 70 mm² / 2 AWG
SpringHeavy-duty tempered steel
Overall Dimensions200 × 85 × 30 mm
Weight0.85 kg (1.87 lbs)
StandardsIEC 60974-1 (General)

Frequently Asked Questions

What cable size can be used with this earthing clamp?

The clamp accepts welding cables up to 70 mm² (2 AWG). The bolt-on connection ensures a tight, low-resistance joint suitable for high-current operation.

Is this clamp suitable for offshore use?

Yes, it is designed with corrosion-resistant materials and a finish that withstands saltwater exposure, making it ideal for marine and offshore applications.

How do I ensure a safe ground connection?

Always clean the workpiece surface to remove rust, paint, or oil before clamping. Ensure the clamp jaws are fully engaged and the cable lug is firmly bolted. Inspect for wear on the jaws and spring periodically.

Can this clamp be used with both AC and DC welders?

Absolutely. The clamp is rated for 600 A and works with both AC and DC welding machines, providing a reliable earth return path.

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