(1 votes, average: 5.00 out of 5)This dual operator arc welding machine — the CRUXWELD ARC630-2T — is a heavy-duty 630A IGBT inverter welder designed for fabrication shops that need two welders working from one powerful source.
With two output terminals, two current controls and two digital ammeters, it saves time, floor space and equipment cost — while doubling as a dedicated air carbon arc gouging machine for repair and back-gouging work.
None of the features above matter unless they translate into fewer problems on your shop floor. Here’s what they actually change:
The machine takes 415V three-phase input and, like any modern IGBT inverter welder, converts it to a high-frequency AC, steps it down, and rectifies it back to a controlled DC output. What’s different on the ARC630-2T is that this output is brought out to two separate terminal pairs, each with its own current control and digital ammeter — so operator 1 can be running 200A on a 4 mm electrode while operator 2 runs 350A on a 5 mm electrode, without either setting affecting the other’s readout.
Flipping the gouging switch reconfigures the machine for CAC-A (air carbon arc gouging) — a process that strikes an arc between a carbon electrode and the workpiece, then uses a jet of compressed air to blow the molten metal out as a groove. It’s the standard way to back-gouge a root pass, remove a defective weld, or prepare a joint without a separate gouging power source. The separate gouging-amp dial lets you set gouging current independently from your welding current, so you’re not re-tuning the whole machine every time you switch modes.
For shops that also need precision plate or profile cutting alongside welding and gouging, it’s worth looking at Cruxweld’s air plasma cutting equipment, such as the FINELINE CUT-160 or FINELINE 100, as a complementary machine rather than a substitute for gouging.
Confirm the exact accessory list and cable lengths for your order with the Cruxweld sales team, as standard inclusions can vary by batch.
A few questions worth answering before you order:
Do you actually need two simultaneous arcs, or just high amperage?
If it’s one welder running heavy electrodes occasionally, a single-operator machine may suit you better and cost less — see Cruxweld’s single-operator ARC 630 or the lower-amperage ARC 400 IGBT for comparison.
Is gouging a regular part of your workflow, or occasional?
If it’s frequent — repair shops, pipeline back-gouging crews — the built-in gouging mode saves you from running a second machine.
What’s your available power supply?
The ARC630-2T draws up to 54A at 415V three-phase (32 kVA rated input). Confirm your site or shop supply and breaker sizing can support that before ordering.
New to inverter-based welders?
Read Cruxweld’s transformer vs inverter welder comparison first.
Arc welding involves electric shock risk, intense heat, ultraviolet radiation, fumes, sparks and burn hazards. Operators should use correct PPE, safe earthing and proper ventilation. For general welding hazard awareness, refer to OSHA welding, cutting and brazing safety guidance.
Two welders, one machine — with air carbon arc gouging built in, not bolted on.
| Parameter | Value |
|---|---|
| Input voltage | AC 415V ±15% |
| Frequency | 50/60 Hz |
| Rated input capacity | 32 kVA |
| Rated output voltage | 44V |
| Open circuit voltage (OCV) | 80V |
| Rated input current | 54A |
| Output current range | 20–630A |
| Power factor (cos φ) | 0.93 |
| No-load voltage | 85V |
| Efficiency | 90% |
| Output current mode | DC |
| Arc force | 0–100%, adjustable from front panel |
| Hot start | Adjustable from front panel |
| Parameter | Value |
|---|---|
| Enclosure class | IP21 |
| Insulation class | H |
| Suitable electrode diameter | 3.2 / 4 / 5 / 6 mm |
| Power source cooling | Forced air, dual cooling fans |
| Generator compatible | Yes |
| Dimensions (L x W x H) | 510 x 305 x 508 mm |
| Weight | 48 kg |
