ESAB Origo Mig C340 Pro is a transformer MIG/MAG wire welder in a compact housing, with a built in wire feeder. You set the current from 40 to 340 A, and at 195 A the machine runs at a 100% duty cycle. The weight is from 114 to 120 kg, the housing is in class IP23 and application class S.
What this machine is for
This is a wire welder for MIG/MAG welding of carbon and stainless steel, in light and medium industrial and workshop use. The build is a transformer one, with stepped voltage adjustment, so there are no complex electronics in the power path. Such a build takes dust, damp and accidental knocks better than light inverters, which is why the machine went to mechanical plants, metal shops, workshops repairing vehicles and farm machines and to workshop production.
The duty cycle at 40°C looks like this: 30% at 340 A and 31 V, 60% at 250 A and 27 V and 100% at 195 A and 24 V. At 195 A you weld without a time limit, so long beads on a structure run in one go. You hold the full 340 A for three minutes in ten, which is enough for penetration into thicker material and for short, strong beads.
The machine takes steel and stainless wire from 0.6 to 1.2 mm and cored wire from 1.0 to 1.2 mm. You set the feed speed from 1.9 to 20 m/min, and the spool can hold up to 18 kg at a diameter of 300 mm, so you set the feeder up less often on a longer run. Aluminium can be welded with wire from 1.0 to 1.2 mm, but that needs separate preparation of the wire path, and the machine has no pulse, so steel stays the natural area of work.
In MIG/MAG the arc burns between the wire and the material under gas, and the wire is at once the electrode and the filler. With carbon dioxide the arc is harder and gives deeper penetration, with an argon mix it runs calmer and leaves less spatter. On this machine you set both variants with a voltage step and the wire speed, because the panel forces no synergic curves on you. A welder who knows the material picks the parameters once and comes back to them by the step number.
The built in design makes the station simpler: the power source and the feeder sit in one housing, so there is no interconnection cable and no separate supply for the feeder. The price is reach, because the torch length sets the working radius around the machine, and on a larger part you move the whole welder on its wheels. In one assembly bay this is a handy layout, in assembly spread over a hall it is easier to work with a power source and a separate feeder.
The usual work for this wire welder is frames, brackets, gates and fences, repairs of trailers and farm equipment, tanks and machine parts. On thin sheet you go down with the current and work in short beads, on thicker material you use the upper steps and the reserve in the duty cycle. The machine has no programs, so every new part needs a moment to set the parameters, but then nothing hides in a menu.
Features and equipment
- Stepped voltage adjustment in 40 steps, set with two switches, repeatable settings without a menu.
- A separate knob for wire feed speed from 1.9 to 20 m/min.
- Two output sockets with different inductance, the higher one gives a softer arc and less spatter, the lower one a narrower arc and deeper penetration.
- A 2 and 4 stroke switch for short beads and for long work without holding the trigger.
- Wire burn off time adjustment, that is the burnback function, which sets the wire stickout after the bead ends.
- A start with slow wire feed, that is creep start, which makes striking easier without spatter.
- A digital voltage and current meter on the panel, you read the parameters during work and note them for the welding documentation.
- Built in four roll feeder in the PRO 4WD version, even feeding of soft and cored wires.
- Wheels and a cylinder shelf in the standard equipment.
- Open circuit voltage from 16 to 40 V, a galvanised metal housing.
Technical data
| Brand | ESAB |
|---|---|
| Technology | transformer, stepped voltage adjustment |
| Process | MIG/MAG, manual welding |
| Supply voltage | from 400 to 415 V, 3 phases, 50/60 Hz |
| Slow blow fuse | 16 A for 400 V |
| Welding current range | from 40 to 340 A |
| Duty cycle at 40°C | 30% at 340 A and 31 V, 60% at 250 A and 27 V, 100% at 195 A and 24 V |
| Open circuit voltage | from 16 to 40 V |
| Number of voltage steps | 40 |
| Inductance sockets | 2 |
| Wire feed speed | from 1.9 to 20 m/min |
| Wire feeder | built in, four roll in the PRO 4WD version |
| Wire diameter, steel and stainless steel | from 0.6 to 1.2 mm |
| Wire diameter, aluminium | from 1.0 to 1.2 mm, needs separate preparation |
| Cored wire diameter | from 1.0 to 1.2 mm |
| Maximum wire spool | 18 kg, diameter 300 mm |
| Cooling | gas |
| Dimensions (l x w x h) | 840 x 425 x 830 mm |
| Weight | from 114 to 120 kg |
| Housing protection class | IP23 |
| Application class | S |
| Efficiency at maximum current | 75% |
| Power factor at maximum current | 0.97 |
| Standard equipment | wheels, cylinder shelf, digital voltage and current meter |
What to watch out for
The supply is from 400 to 415 V in a three phase system at 50/60 Hz, with a slow blow 16 A fuse for 400 V, that is a separate power circuit in the workshop. Protection class IP23 and application class S mean work in a hall and under a roof and approval for places with a raised risk of shock, but not work in the rain. The record gives gas cooling, so you pick a torch without a liquid circuit.
The weight from 114 to 120 kg at dimensions of 840 x 425 x 830 mm comes from the transformer. Wheels and a cylinder shelf help to move the machine around the hall, but this is stationary equipment, and you plan loading with a pallet. Stepped adjustment gives 40 voltage settings, so between the steps you correct the arc with the wire speed and not with a smooth change of voltage. The lack of pulse limits work on aluminium.
When you buy, look at the wire path, because it is a wear part: the feed rollers have to match the diameter and type of wire, the guide and the contact tip wear in continuous work. The torch and the earth cable are matched to the current range, at the upper settings you need a torch with a suitable rating. Check the state of the voltage step switches and the running of the fan as well, because in a transformer machine these are the two places that decide the daily work. It is worth looking at the output sockets and the earth clamps, because a loose connection heats up and spoils the arc.
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.