The Güde Uni-Mig 205 SYN is a multiprocess inverter welder for professional and advanced hobby use, with an adjustable welding current of 20–200 A, four available processes (MIG/MAG, MMA, flux-cored wire and TIG with optional torch), synergic wire feed and 230 V single-phase power supply. A German brand specialising in workshop equipment, distributed in Italy by Krollit, official Güde distributor since 2007.
- Adjustable welding current: 20–200 A
- Processes: MIG/MAG, MMA (stick electrode), flux-cored wire, TIG (optional torch)
- Synergic wire feed: wire speed set automatically according to process, wire diameter and current
- Power supply: 230 V single-phase, 50 Hz, 16 A slow-blow fuse
- Maximum power consumption: 8.05 kVA, efficiency 83.1%
- Recommended material thickness: 1–12 mm
- Duty cycle at maximum current: 15% (MIG/MAG/TIG), 30% (MMA)
- Hot Start, Arc Force and Anti-Stick functions as standard
- Compatible spools: small spools and D200 plastic spools up to 5 kg
- Flux-cored wire: 0.9 mm
- IGBT inverter technology with precise current regulation
- Net weight: 24.5 kg, welding trolley included
Who uses the Uni-Mig 205 SYN and what for
The Uni-Mig 205 SYN is used by maintenance technicians, metalworkers and small light-fabrication workshops that need to switch between several processes with a single machine: MIG/MAG with shielding gas for steel sheet and profiles, 0.9 mm flux-cored wire where no gas cylinder is available, MMA with coated electrodes for repairs and outdoor welding. The synergic wire feed regulation reduces the parameters to be set manually, a concrete advantage for those who weld occasionally or are approaching MIG/MAG for the first time. IGBT inverter technology makes it possible to work thin sheet from 1 mm with reduced spatter, up to thicknesses of 12 mm.
Who the Uni-Mig 205 SYN is for
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Profile
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Compatibility
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Reason
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Advanced hobbyist and maintenance technician
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Suitable
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Four processes in a single 24.5 kg machine, 230 V single-phase supply available in any domestic or workshop environment
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Small workshop and metalworker
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Suitable
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20–200 A range and 1–12 mm thicknesses cover light fabrication, repairs and thin sheet work with synergic wire feed
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Heavy fabrication and continuous production
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Not recommended
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15% duty cycle at maximum current in MIG/MAG: at 200 A the machine welds for about 1.5 minutes in every 10, insufficient for intensive shifts
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Not recommended for: continuous high-current welding in production environments, where the 15% duty cycle at 200 A imposes frequent pauses, and for professional TIG applications on aluminium, since the machine operates in direct current.
Technical specifications
Power supply and electrical data
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Mains voltage
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230 V
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Frequency
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50 Hz
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Maximum power consumption
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8.05 kVA
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Recommended fuse (slow-blow)
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16 A
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No-load power
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46 W
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Efficiency
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83.1%
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Protection class
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I
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Degree of protection
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IP21S
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Insulation class
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H
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Welding processes
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MIG/MAG current range
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50–200 A
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MMA current range
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20–200 A
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TIG current range
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20–200 A
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Duty cycle at max. current (MIG/MAG/TIG)
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15%
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Duty cycle at max. current (MMA)
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30%
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Hot Start
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Yes
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Arc Force
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Yes
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Anti-Stick
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Yes
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Recommended material thickness
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1–12 mm
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Wire feed and spools
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Wire feed regulation
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Synergic
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Flux-cored wire diameter
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0.9 mm
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Max. wire spool
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5 kg
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Compatible spools
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Small spools and D200 plastic spools
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Dimensions and weight
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Length
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450 mm
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Width
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205 mm
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Height
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295 mm
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Net weight
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24.5 kg
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Gross weight
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26.7 kg
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Packaging dimensions
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702 x 300 x 435 mm
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Construction
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Powder-coated sheet steel housing
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Güde article number
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20083
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Standard equipment
- 3 m MIG/MAG torch with Euro connector (MB15)
- 2.5 m earth cable with 300 A earth clamp
- 1.8 m electrode holder, 200 A
- 3 contact tips (0.6 / 0.8 / 0.9 mm)
- Pressure regulator with 2 gauges
- 2 m gas hose
- Welding shield
- Chipping hammer with brush
- Welding trolley with gas cylinder holder
- Integrated thermal overload protection
Optional Güde accessories
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Code
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Description
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Note
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16921
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Auto-darkening welding helmet GSH-TC-2
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Protection for all processes
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16922
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Auto-darkening welding helmet GSH-K
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Protection for all processes
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16924
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Auto-darkening welding helmet GSH 180-TC-2
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Widened field of vision
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16975
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5-finger welding gloves 6120
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Hand protection
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41690
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Complete TIG equipment
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Required to enable the TIG process
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Frequently asked questions
Is a 230 V single-phase supply enough to run the Uni-Mig 205 SYN?
Yes, the machine runs on a 230 V, 50 Hz single-phase mains supply with a 16 A slow-blow fuse.
Maximum power consumption is 8.05 kVA at the peak current of 200 A. For welding at low to medium currents, typical on sheet from 1 to 5 mm, the power draw remains easily manageable by a normal workshop or domestic installation. It is advisable to avoid extension leads with an insufficient cross-section, which reduce arc stability.
Is the TIG function included as standard?
No, the TIG process requires the optional Güde equipment code 41690, not included in the standard supply.
The power source is prepared for TIG with a 20–200 A range, but the package contains the MIG/MAG torch with Euro connector, the electrode holder for MMA and the earth cable. Anyone intending to TIG weld carbon or stainless steel must add the dedicated equipment, available from the Krollit warehouse.
Can I weld without a gas cylinder?
Yes, with the 0.9 mm flux-cored wire process, which requires no external shielding gas.
Flux-cored wire contains the flux that protects the weld pool, a suitable solution for outdoor work or where no cylinder is available. For cleaner finishes on thin sheet, gas-shielded MIG/MAG remains preferable, for which the machine includes a pressure regulator with 2 gauges and a 2 m gas hose.
What does synergic wire feed regulation mean?
The wire feeder automatically sets the wire speed after the process, wire diameter and welding current have been selected.
On traditional MIG/MAG welders the wire speed has to be calibrated manually for every combination of parameters, an operation that requires experience. Synergic regulation eliminates this step and allows even inexperienced welders to obtain a stable arc and regular beads straight away on thicknesses from 1 to 12 mm.
What does the 15% duty cycle at maximum current indicate?
It indicates that at 200 A in MIG/MAG the machine can weld for about 1.5 minutes in every 10-minute cycle, with a cooling pause for the remaining time.
In MMA the duty cycle at maximum current rises to 30%. Working at lower currents, as in most applications on sheet from 1 to 6 mm, continuous welding times lengthen considerably. The integrated thermal protection cuts in automatically in the event of overload, without damage to the power source.
Which wire spools are compatible?
The machine accepts small spools and D200 plastic spools up to 5 kg in weight.
The 5 kg D200 format is among the most widespread and readily available on the market, both in solid wire for MIG/MAG and in 0.9 mm flux-cored wire. Three contact tips of 0.6, 0.8 and 0.9 mm are included in the equipment, to adapt the torch to the different wire diameters.
