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- Kemppi Master M 353G Synergic Air Cooled MIG Welder 350A 415V
Kemppi Master M 353G Synergic Air-Cooled MIG Welder – 350A, 415V
The Kemppi Master M 353G Synergic is a high-performance MIG/MAG welding power source engineered for demanding industrial environments. With a rugged design, advanced control features, and robust arc characteristics, this 350 A, 415 V air-cooled system delivers exceptional productivity and weld quality across a wide range of materials and applications.
Built on Kemppi’s proven Master platform, the Master M 353G combines flexibility with ease of use. Its synergic control system automatically manages key welding parameters based on the selected wire type and diameter, simplifying setup and reducing the need for manual adjustments. This makes it ideal for high-output fabrication, structural steelwork, pressure vessels, and heavy engineering, where consistent results are critical.
Precision Performance & Synergic Control
At the heart of the Master M 353G is its advanced synergic technology, which dynamically adjusts voltage and wire feed speed in real time. Welders simply select the material and wire type, and the machine calculates optimal parameters — ensuring stable arcs, reduced spatter, and excellent bead appearance, even in challenging joint configurations.
Industrial Durability & Compact Efficiency
Designed for harsh workshop and production environments, the Master M 353G features a robust, air-cooled build with high-quality electrical components that withstand long operating cycles. Its efficient cooling system maintains performance during heavy use while reducing maintenance needs compared to more complex liquid-cooled units.
Wide Application Range
With a maximum output of 350 A, this unit handles thick-section welding with ease while offering the control needed for thinner materials. It supports a broad range of consumables and metal types — including mild steel, stainless steel, and aluminium — making it a versatile choice for everything from light fabrication to heavy structural work.
Advanced Connectivity & Control Options
The Master M 353G offers multiple control interfaces, including remote control panels and optional MIG guns with trigger switches. Integrated diagnostics and intuitive user settings enable fast setup, reduced downtime, and improved workflow efficiency on busy production floors.
Key Features:
- Red Dot Product Design Award winner 2023
- Versatile process selection for industrial welding: Manual, 1-MIG, Pulse MIG, DC TIG, and stick welding (MMA)
- Welding programs include Fe, Ss, Al, CuSi, CuAl, Fe Metal, Fe Rutil, FC-CrNiMo materials
- MAX and Wise welding processes for challenging steel, stainless steel, and aluminium welding applications
- Cobot-ready welding machine, fast and easy setup with a Digital Connectivity Module and Kemppi Cobotics app
- Weld Assist establishes guidance for welding parameters
- Self-charging LED work lights improve work safety
- Safe-lift grab handle for safe lifting
- Two and four-wheel carriage options for easy movement
- SuperSnake GTX sub-feeder enables maximum reach in challenging welding sites
- Reports welds and work orders to WeldEye software through the welding machine's user interface
- WeldEye ArcVision offers better insight into your welding production
- WeldEye Quality Management offers a 360-degree view and 100% traceability of every welding project
- Kinetic spool brake prevents wire spool overrun, automatically slowing and reversing the filler wire spool at the end of each weld
- Compatible with a generator and multi-voltage use
- Memory channels for saving the best welding parameter settings
- Weight 27 kg
- Ultimate welding comfort and long-lasting, high-quality consumables with Flexlite GXe welding guns
Ideal For:
- Industrial fabrication and structural steelwork
- Shipbuilding and heavy engineering
- Pressure vessel and pipeline fabrication
- High-volume manufacturing environments
Kit Includes:
- Kemppi Master M 353G Synergic Air Cooled MIG Welder
- Kemppi Flexlite GXe323G 3.5Mtr MIG Welding Torch
The Kemppi Master M 353G is an investment in performance, reliability, and productivity — a welding platform that empowers operators to work faster, cleaner, and with confidence across the full spectrum of MIG/MAG applications.

Work Safely in Low Light Conditions
Improve working efficiency and safety with or without mains power connected. LED lighting is also included to the wire feed cabinet.
Work Safely in Low Light Conditions
Improve working efficiency and safety with or without mains power connected. LED lighting is also inclued to the wire feed cabinet.
Weld Assist
Weld assist is a guidance tool for faster setup. Simply select the joint type, welding position, and material thickness and you're ready to weld. An excellent instructive and educational tool. Weld assist parameters can also be adjusted manually for individual preference.
Weld Assist
Weld assist is a guidance tool for faster setup. Simply select the joint type, welding position, and material thickness and you're ready to weld. An excellent instructive and educational tool. Weld assist parameters can also be adjusted manually for individual preference.


Weld Longer with Maximum Power
Master M series has two cooler options that keep the welding gun cool and the arc conditions smooth and stable. Cooler also features an easy-clean tank design and integrated LED lighting, which means you can keep an eye on the cooling liquid levels and make routine maintenance effortless. Optional cooler maximizes the use of 350A power source with a 40% duty cycle.
Weld Longer with Maximum Power
Master M series has two cooler options that keep the welding gun cool and the arc conditions smooth and stable. Cooler also features an easy-clean tank design and integrated LED lighting, which means you can keep an eye on the cooling liquid levels and make routine maintenance effortless. Optional cooler maximizes the use of 350A power source with a 40% duty cycle.
| Mains connection voltage 3~ 50/ 60 Hz | 380...460 V ±10 % |
|---|---|
| Mains connection cable type | H07RN-F |
| Mains connection cable size | 4 mm² |
| Fuse | 16 A |
| Wire feed mechanism | 4-roll, Single-motor |
| Diameter of feed rolls | 32 mm |
| Filler wires - Fe | 0.8 ... 1.2 mm |
| Filler wires - Ss | 0.8 ... 1.2 mm |
| Filler wires - Mc/Fe | 0.8 ... 1.2 mm |
| Filler wires - Al | 0.8 ... 1.2 mm |
| Wire feed speed | 0.5 ... 25 m/min |
| Wire spool weight (max) | 20 kg |
| Wire spool diameter (max) | 300 mm |
| Shielding gas pressure (max) | 0.5 MPa |
| Maximum supply current [I1max] | 21.3 ... 17.1 A |
| Effective supply current [I1eff] | 13.5 ... 10.8 A |
| Rated maximum input power [S1max] | 14 kVA |
| Idle state power consumption [P1idle] | 18 W |
| No-load state power consumption (MMA), power save | 18 W |
| No-load state power consumption (MMA), fans ON | 119 W |
| No-load voltage [U0] | 55 ... 69 V |
| Open circuit voltage [Uav] | 53 ... 64 V |
| Voltage adjustment range, MIG | 10 ... 40 V |
| Power factor at rated maximum current [λ] | 0.91 |
| Efficiency at rated maximum current [η] | 87 % |
| EMC class | A |
| Minimum short-circuit power of supply network [Ssc] | 2.4 MVA |
| Voltage supply for auxiliary devices | 12 V |
| Voltage supply for cooling unit | 24 V, 380...460 V |
| Welding Connection Type | Euro |
| Operating temperature range | -20 ... 40 °C |
| Storage temperature range | -40 ... 60 °C |
| Degree of protection | IP23S |
| External dimensions LxWxH | 602 mm x 298 mm x 447 mm |
| Weight without accessories | 27 kg |
| Recommended generator power (min) | 20 kVA |
| Standards | IEC 60974-1, -10 |
| Wired communication type | CAN bus |
| Control panel, model | Custom LCD |
| Control panel, display | Color LCD |
| Control panel, controls | 2 control knobs, Push buttons |
| Control panel, type of installation | Built-in |
| Control panel, input voltage (DC) | 12 V |
| LED battery type and voltage | SAMSUNG SDI (INR18650-26J; 3,6 V; 2600 mAh); LG CHEM (ICR18650HE4; 3,6 V; 2500 mAh) |
| Welding connection type | Euro |
|---|---|
| Contact tip | M10x1 |
| Method of guidance | Manual |
| Load capacity 100% / Ar + 18% CO₂ | 320 A |
| Load capacity test, filler wire material | Fe |
| Load capacity test, filler wire diameter | 1.2 mm |
| Load capacity test, stick out length | 18 mm |
| Load capacity test, gas flow | 15 l/min |
| Gun handle | Yes |
| Neck type | Rotating |
| Neck dimensions: length | 135 mm |
| Neck dimensions: height | 96 mm |
| Neck dimensions: angle | 50 ° |
| Welding torch cable length | 3.5 m |
| Remote control | Optional |
| Standards | IEC 60974-7 |
| Filler wire diameter | 0.8 ... 1.6 mm |
| Filler wire diameter, Fe | 0.8 ... 1.6 mm |
| Filler wire diameter, Fe-MC/FC | 0.9 ... 1.6 mm |
| Filler wire diameter, Ss | 0.8 ... 1.6 mm |
| Filler wire diameter, Ss-MC/FC | 0.9 ... 1.6 mm |
| Filler wire diameter, Al | 0.8 ... 1.6 mm |
| Load capacity 60% / Ar + 18% CO₂ | 270 A |
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