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Copper-plated steel welding ground clamp, 7.5 in long, deep-reach jaws

Mag-Mate

Mag-Mate Welding Ground Clamp 400 A 7.5 in

SKU CH-FW4D-W7HXE

Copper-plated steel ground clamp rated 400 A with 7.5 in length and deep-reach jaw for flat or round surfaces

  • Product typeTools
  • Handles 400 A for heavy welding jobs
  • Deep-reach jaw grips thick workpieces securely
  • Copper-plated steel body conducts current efficiently
  • 4 1/2 in jaw opening fits flat and round stock
  • 5 in overall length gives comfortable leverage

Ground clamp rated 400 A

The Mag-Mate welding ground clamp delivers a maximum current rating of 400 A and accepts cable up to 3 AWG. Its copper-plated steel body and deep-reach jaw grip flat or round workpieces securely. The clamp opens to a maximum jaw opening of 4 1/2 in with a throat depth of 2 5/8 in. Overall length is 7.5 in and overall width is 7 in.

Sustained-load behaviour

The copper-plated steel construction resists heat buildup during extended welding sessions. A wide 4 1/2 in jaw opening maintains consistent contact on large or irregular surfaces without frequent repositioning. The deep-reach design keeps the cable connection clear of the weld zone, reducing the risk of accidental disconnection under continuous amperage.

Upgrade path and fit

This clamp replaces smaller-capacity grounds that cannot carry 400 A or accommodate 3 AWG cable. It is not suited for jobs requiring a lighter, more compact clamp where maximum jaw opening exceeds the workpiece dimensions. Buyers needing higher amperage capacity or a different jaw profile should verify specifications before purchase.

How it compares

Measured against everything we stock in Welding Equipment & Positioners, at today’s prices. Recalculated every night.

Price $40.99
Cheaper than about 56% of the 1,978 comparable items (median $50.99).

Specifications

Product
Brand nameKANT-TWIST
Product typeTools

Questions about this item

Does the copper-plated steel body and 400 A rating keep the clamp cool during long welding sessions?

The copper-plated steel construction and 400 A capacity are designed to handle high current with minimal resistance, which reduces heat build-up during extended use.

What cable gauge must I already have to connect this ground clamp properly?

The clamp accepts cables up to 3 AWG, so you need a welding lead of that size or smaller for a secure connection.

Will the 2 5/8 in throat depth reach past the flange on my existing workpieces?

The deep-reach jaw with a 2 5/8 in throat depth is made to clear flanges and other obstructions on flat or round surfaces.

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