WELPRO 20–140A Inverter Welder Model WEL MMA 140

A high-quality MMA Inverter Welder designed for professional tradesmen, installation work, and general maintenance applications. It delivers a full rated welding current of up to 140A, providing a smooth, stable, and consistent welding arc.

The welding current can be precisely adjusted from 20–140A and clearly displayed on the Digital Display, allowing users to set the welding current accurately and conveniently. The machine supports welding electrodes ranging from 1.6 mm to 3.2 mm and is designed for extended continuous welding throughout the day without interruption.

In addition to MMA welding, the machine features front-panel MMA polarity terminals, allowing the welding polarity to be switched according to the workpiece and electrode type. It also supports the TIG LIFT function for Lift TIG welding when used with optional accessories, providing greater versatility for different applications.

For enhanced safety, the machine is equipped with VRD (Voltage Reduction Device), which reduces the No-Load Voltage at the output terminals to just 14V when the machine is not welding or while changing the electrode, helping reduce the risk of electric shock.

Advanced welding assistance technologies include Hot Start (0–100% adjustable), Arc Force (0–100% adjustable), and a built-in Anti-Stick system that automatically cuts the welding current when the electrode sticks to the workpiece, helping prevent electrode sticking and burning.

Key Features

• Delivers a full rated welding current of up to 140A, providing smooth, stable, and consistent welding performance.
  
• Adjustable MMA welding current from 20–140A for a wide range of welding applications.
  
• Equipped with a clear Digital Display for convenient and accurate monitoring of the welding current.
  
• Compatible with welding electrodes ranging from 1.6 mm to 3.2 mm.
  
• Designed with an optimized circuit and cooling system to support extended continuous welding without interruption.
  
• Convenient front-panel MMA polarity terminals allow the welding polarity to be switched according to the application.
  
• Enhanced safety with VRD, reducing the output voltage to just 14V while changing the electrode to help reduce the risk of electric shock.
  
• Supports optional TIG LIFT welding when used with additional accessories.
  
• Built-in Anti-Stick system automatically cuts the welding current when the electrode sticks to the workpiece, helping prevent electrode sticking.
  
• Hot Start, adjustable from 0–100%, increases the welding current when starting the arc for easier ignition.
  
• Arc Force, adjustable from 0–100%, compensates for welding current fluctuations when the arc length varies, helping maintain arc stability and improve weld quality.
  
• Manufactured and distributed by WELPRO, a trusted welding equipment brand among professional tradesmen.

Technical Specifications

• Brand : WELPRO
  
• Model : WEL MMA 140
  
• Product Type : MMA Inverter Welder
  
• MMA Welding Current Range : 20–140 A
  
• Supported Electrode Diameter : 1.6–3.2 mm
  
• Display : Digital Display
  
• Welding Functions : MMA / TIG LIFT (optional accessories required)
  
• Safety System : VRD – reduces voltage to 14V during welding standby
  
• Welding Assistance : Hot Start (Adjustable 0–100%), Arc Force (Adjustable 0–100%), Anti-Stick (Built-in)
  
• Polarity Adjustment : Front-panel MMA polarity switching

Package Includes

• 1 × Inverter Welder
  
• 1 × Electrode Holder: H01N5-D, 16 mm² / 4 m
  
• 1 × Earth Clamp: H01N5-D, 16 mm² / 3 m