The Lincoln Electric POWERTEC 425 S is a MIG/MAG welder in the workshop and production class, supplied from a 400 V mains. The source works from 30 to 420 A and gives 420 A at a 40% duty cycle and 265 A at 100%. The wire is driven by a four roll feed and you set the voltage with a step switch.
What this machine is for
The machine welds by MIG/MAG under gas, with wire fed without a break. A current of 420 A at a 40% duty cycle is enough for fillet welds on thicker sections, and 265 A in continuous work pulls long runs with no stops for the source to cool.
This is kit for a fabrication workshop and for production in mild steel, where operation with no screen menu counts. The spot mode comes in useful when you tack sheets in a lap joint.
Features and equipment
- Manual MIG/MAG welding: wire fed without a break under gas.
- Spot welding: the system times the arc and cuts the current.
- Stepped control of the welding voltage: repeatable steps of settings.
- Stepless control of the wire feed: you match the speed to the thickness of the material.
- Four roll feeder: it leads the wire without slip with a longer liner.
Technical data
| Brand | Lincoln Electric |
|---|---|
| Type | MIG/MAG welder |
| Lowest welding current | 30 A |
| Highest welding current | 420 A |
| Current at a 40% duty cycle | 420 A |
| Current at a 100% duty cycle | 265 A |
| Welding current given on the record | up to 500 A |
| Supply voltage | 400 V |
| Cooling | gas |
| Wire feeder | four roll |
| Torch in the set | 4 m for 300 A, gas cooled |
| Earth cable | 3 m |
| Power supply cable | 3 m |
What you get
- welding lead 4 m for 300 A, gas cooled
- earth cable 3 m
- power supply cable 3 m
What to watch out for
The record gives a welding current up to 500 A and the source description 420 A at a 40% duty cycle, so confirm the value on the rating plate. The torch from the set has a load capacity of 300 A, and on longer work above that value the grip heats up. A 400 V supply means a three phase socket. Stepped control gives fixed steps of voltage, and the choice of values in between stays with the welder.
This unit is sold
This machine has already gone to a customer. Similar units are listed below, and if you want the same model, leave your contact details in the form and we will let you know when the next one arrives.






