IWAVE 300I AC/DC G/W/F TIG INVERTER
FRONIUS iWAVE 300i AC/DC
TIG AC/DC Inverter Power Source — Gas Cooled
The Fronius iWave 300i AC/DC steps up into the Multiprocess PRO tier of the iWave range, delivering up to 300A of fully digitised, microprocessor-controlled TIG AC/DC power alongside modular MIG/MAG capability. Built for production environments where consistent, high-quality welds matter every time, it pairs Fronius' intelligent ignition and arc control technology with genuine connectivity and expandability — making it as much a platform to grow into as a machine to weld with today.
Like the rest of the range, the 300i AC/DC is built around RPI Auto, Fronius' intelligent ignition function that automatically adjusts ignition settings based on electrode diameter and condition, cutting ignition delay by up to 71% without any manual parameter adjustment.
Key Features
| Feature | Detail |
|---|---|
| Welding processes | TIG AC/DC (with RPI Auto), Manual (Stick/MMA) electrode |
| Output | Up to 300A |
| Cooling | Gas cooled |
| Multiprocess capability | Optional MIG/MAG process variants (Standard, Pulse, PMC, LSC, CMT) via modular welding packages |
| Ignition | RPI Auto intelligent ignition — up to 71% less ignition delay |
| TIG control function | CycleTIG — stitch-welding based process for maximum control over arc and heat input on thin materials |
| Display | 4.3" colour plain-text display, menu navigation in 30+ languages |
| Connectivity | Bluetooth, Wi-Fi (WLAN) and NFC — connect welding helmets, remote controls and mobile devices |
| Mains voltage | 3 x 400V (standard) |
| Weight | Approx. 16–17 kg — comparable to a beverage crate for genuine portability |
| Generator compatibility | Fully generator-compatible |
Multiprocess PRO — One Machine, More Processes
The iWave 300i sits within Fronius' Multiprocess PRO tier (iWave 300i–500i), meaning it isn't locked to TIG alone. Alongside the full TIG function set, the modular welding package system allows MIG/MAG process variants — Standard, Pulse, PMC, LSC and CMT — to be added as the application demands, without replacing the machine. This makes the 300i a genuine long-term platform investment rather than a fixed-purpose TIG unit.
Why Choose the iWave 300i AC/DC?
Production-grade TIG in a portable footprint. At around 16–17kg, the 300i is genuinely portable while still delivering the output and control expected in a production environment.
Faster, more reliable ignition. RPI Auto removes the guesswork from TIG ignition settings, delivering consistent arc starts regardless of electrode condition or material.
Maximum control on thin materials. CycleTIG gives fine control over heat input and weld pool behaviour, ideal for thin sheet, corner and butt welds where burn-through is a risk.
Connected and future-ready. Bluetooth, Wi-Fi and NFC connectivity support wireless remote controls, Bluetooth-enabled welding helmets, and user management via NFC key — while the modular MIG/MAG package options mean the machine can grow with the workshop's needs.
Intuitive to operate. A 4.3" colour display with graphic-dynamic menu navigation in over 30 languages keeps all essential parameters accessible on the first menu level, even with welding gloves on.
Frequently Asked Questions
What welding processes does the iWave 300i AC/DC support? TIG AC/DC with RPI Auto intelligent ignition and manual (stick/MMA) electrode as standard, with optional MIG/MAG process packages (Standard, Pulse, PMC, LSC, CMT) available for multiprocess capability.
Is the iWave 300i AC/DC gas or water cooled? This listing is the gas-cooled configuration. A water-cooled version is also available for higher duty-cycle applications.
What is RPI Auto? RPI Auto is Fronius' intelligent ignition function, which automatically adjusts ignition parameters based on electrode diameter and condition, delivering fast and reproducible arc starts without manual adjustment — reducing ignition delay by up to 71% compared to running without it.
What is CycleTIG? CycleTIG is a stitch-welding based TIG process variant that gives the operator greater control over the arc and heat input, particularly useful for thin materials and delicate corner or butt welds.
Can the iWave 300i AC/DC be upgraded to MIG/MAG welding later? Yes — as part of the Multiprocess PRO tier, the 300i's modular design allows MIG/MAG welding packages to be added after purchase, without needing to replace the machine.
How does the iWave 300i AC/DC compare to the iWave 230i AC/DC? The 300i offers higher output (up to 300A vs 230A) and steps into the Multiprocess PRO tier with optional MIG/MAG capability, CycleTIG, and full wireless connectivity — features not available on the smaller 190i and 230i models.