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Bernard™ Insulator

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Airgas Part #:BER4780

Manufacturer Part #:4780


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Item Details

  • The ITW/Miller 4780 (Bernard 4780) is a high-heat resistant rubber composite insulator designed for air-cooled MIG guns. It functions as a safety component to provide electrical insulation between the live brass hex nut and the external torch assembly, preventing nozzle arcing during welding operations.

Features

  • Prevents nozzle arcing by isolating the live brass hex nut
  • Provides electrical insulation for the external torch assembly
  • High-heat resistant material construction
  • Rubber composite durability for industrial environments

Specifications

  • Manufacturer: ITW / Miller (Bernard)
  • Model Number: 4780
  • Amperage Rating: 300A - 400A
  • Cooling Method: Air-cooled
  • Material: High-heat resistant rubber composite
  • Component Type: Hex nut insulator

Applications

  • Bernard BTB Series MIG guns
  • Bernard S-Gun Series MIG guns
  • Bernard BN-Series MIG guns
  • 300A-400A air-cooled MIG welding systems

Product Attributes

Product Type

» Insulator

Cooling Method

» Air Cooled

MIG Gun Model

» BTB
» S-Gun™ MIG Guns