Ronch Raptor Duty R350 MP
The Ronch Raptor Duty R350 MP is a multi-process DC/CV inverter power source, SMAW/GMAW/GTAW/FCAW, electronic protections, 4-roller feed, Euro connector, and Spool Gun connector.
- Download the Specs Sheet
- Download the User's Manual
- Request the service manual
It stands out for its versatility with generators (developed to work with diesel generators and prepared for input peaks) and a set of functions designed for real-life workshop and construction site use: thermal protection, burn-back adjustment, crater filling, spatter control, and parameter adjustment from the feeder.
Technical specifications of the Ronch Raptor Duty R350 MP
| Feature | Parameter | ||||
|---|---|---|---|---|---|
| Input power (V) | 3~220/380/440 VAC + 10% | ||||
| Work cycle | 350A 60% 31.5V 271A 100% 27.2V | ||||
| Electrode diameter (Solid or cored wires) | 0.8 -1.2 mm | ||||
| Amperage regulation | 25 - 350 A | ||||
| Electrode diameter | 1/16” (1.6mm) - 1/8” (3.2mm) - 5/32” (4.0mm) | ||||
| Shipping dimensions (mm) | 510 / 200 / 430 | ||||
| Net weight (kg) | 52.5 | ||||
| Protection class | IP21 | ||||
| Isolation class | F | ||||
Benefits of choosing modern and reliable TIG welders
- Operational flexibility with a single machine: Switch between MIG/TIG/Stick/FCAW without multiplying power sources; ideal for mixed work orders and maintenance contracts that require multiple solutions on the same day.
- Continuity and electrical safety: The combination of heavy duty cycle, thermal protections, and surge/generator readiness helps maintain equipment availability and protect operators.
- Superior wire feed and control: 4 rollers, Euro, 24 V, and adjustment from the feeder improve traction and weld start/finish quality (burn-back and crater reduce sticking and perforations).
- Spool Gun for aluminum: With a Spool Gun connector, the R350 MP is ready for MIG aluminum, minimizing jams and improving soft wire control.
- Three-phase with automatic selection: The 3~ 220/380/440 V input simplifies integration into different installations and reduces electrical compatibility headaches in plants and workshops.
Sectors where the Ronch Raptor Duty R350 MP adds the most value
Metalworking: manufacture of cabinets, tools, and structures; MIG/FCAW for volume and TIG for high-aesthetic parts.
Food and beverage/pharmaceutical: TIG on stainless steel for clean joints and color control; MIG on frames and accessories.
Metal construction and structures: FCAW/Stick outdoors and MIG in the workshop, with continuity thanks to the 60% duty cycle.
Energy/Oil & Gas: repairs and maintenance with Stick and FCAW in the field; MIG/TIG for precision components.
Transportation and bodywork: MIG for speed; TIG for visible finishes and thin parts.
Frequently asked questions about the Ronch Raptor Duty R350 MP
1. What processes does the R350 MP handle?
MIG/MAG, TIG (DC), Stick, and FCAW; the website and official specifications indicate it as a professional multi-process DC/CV.
2. Can I weld aluminum?
Yes, using MIG with a Spool Gun. For aluminum TIG welding, an AC/DC welder is required.
3. What is its duty cycle?
350 A at 60% and 271 A at 100% (at 40°C/10 min).
4. What is the power supply?
3~ 220/380/440 V (±10%) with automatic voltage selection.
5. What wire diameter does it accept?
0.8–1.2 mm (solid or tubular), Euro connector, 4-roller feeder.
6. What electrodes can I use?
From Ø 1/16“ (1.6 mm) to 5/32” (4.0 mm), depending on position and joint.
7. What are burn-back and crater filling for?
Burn-back prevents the wire from sticking at the end, crater filling helps to close the bead without perforating. Both improve quality and reduce rework.
8. What does “voltage reduction device” mean?
It is a VRD-type function that lowers the open-circuit voltage when there is no arc, helping to ensure electrical safety.
9. Is the welder designed for generators?
Yes, it is designed to work with diesel generators and is prepared for input spikes.
10. What exactly does the “duty cycle” measure?
The percentage of time (over 10 min) that the machine can weld at a given current before requiring cooling.
