Ronch R400 ARC
The Ronch R400 ARC is a high-amperage welding equipment that combines DC TIG (Lift) and MMA/Stick with professional controls and electrical safety. This equipment stands out for its versatility with diesel generators, input voltage peaks, digital meter, VRD, Arc Force, and starting current.
For companies in the food and beverage, metalworking, oil & gas, construction, transportation, and maintenance industries, the Ronch R400 ARC welding equipment has just the right features for those who switch between the workshop and the job site.
Technical specifications of the Ronch R400 ARC
| Feature | Value | ||||
|---|---|---|---|---|---|
| Input power (V) | 3 ~ 220 / 380 / 440 VAC + 10% | ||||
| Work cycle | 400A a 60% / 310A a 100% | ||||
| Current range (A) | 15 - 400 | ||||
| No-load voltage (V) | 76,6 | ||||
| Frequency (Hz) | 50 / 60 | ||||
| Refrigeration | Air cooled | ||||
| Efficiency (%) | 85 | ||||
| Electrode diameter | ø1.6 ~ ø5.0 | ||||
| Shipping dimensions (mm) | 710 x 423 x 525 | ||||
| Net weight (kg) | 39 | ||||
| Protection class | IP21S | ||||
| Electrode type | 6010, 6011, 6013, 7018, etc. | ||||
Benefits of choosing modern and reliable TIG welders
- Visible quality, minimal spatter: TIG is a clean, slag-free process with very little spatter, ideal when the weld bead is visible or when health audits are required.
- Heat control and precision: The ability to regulate amperage—and even more so with a foot pedal—gives you more consistent weld bead geometry and tolerances on thin parts.
- DC for steel and stainless steel: DC TIG is “the basis” for ferrous metals and alloys that do not require cathodic cleaning; it provides a stable arc and controlled penetration.
- Operational safety with VRD: VRD reduces OCV without an arc, improving electrical safety for personnel and the operation.
- Productivity in real conditions: The R400 ARC is developed for generators and ready for peaks, so your operation is not interrupted by grid variations.
Sectors that use TIG the most
Food and beverage/pharmaceutical: stainless steel pipes and tanks with sanitary finish; TIG is preferred for cleanliness and control.
Oil & Gas/Energy: critical roots and passes in steel/stainless steel (TIG DC) and field work where generator compatibility is essential.
Metalworking: tools, cabinets, instrumentation, exchangers, and precision parts.
Transportation/automotive: visible elements in steel/stainless steel with aesthetic requirements.
Construction/metal architecture: stainless steel railings, frames, street furniture, and decorative details.
Frequently asked questions about the Ronch R400 ARC
1. Can it be used for TIG welding aluminum?
The R400 ARC is TIG DC (Lift). AC is used for aluminum (for oxide cleaning); if that material is in your mix, consider Ronch AC/DC equipment.
2. Does it have “Lift TIG”?
Yes. The catalog indicates TIG mode with Lift function on this platform.
3. What is the duty cycle?
400 A @ 60%; at 100%, 310 A.
4. Can I work with generators?
Yes. It is designed to work with diesel generators and is prepared for input peaks. Use stable generators with sufficient power.
5. What does the VRD do?
The Voltage Reduction Device lowers the OCV when you are not welding, reducing the risk of electric shock.
6. What is Arc Force for?
It is an automatic amperage boost when the arc shortens; it prevents the electrode from sticking and maintains penetration.
7. What is the start current?
It allows you to adjust the starting amperage for more consistent ignition and less sticking/damage to the coating.
8. Does it accept a remote foot pedal for TIG?
Yes, the remote foot pedal is optional; it adds fine control of the weld pool during the bead.
9. What are the dimensions and weight?
710 × 423 × 525 mm, 39 kg, IP21S, air-cooled.
10. What electrodes does it support?
Ø 1.6–5.0 mm, 6010/6011/6013/7018, among others. Adjusts the amperage to the diameter and position.
