Compare
40 vs 50 vs 65 A plasma cutter classes
Compare plasma amp class ceilings against CutAmps estimates, with verified VEVOR US product examples and an honest NO_MATCH path.
| Class | Clears when | Typical fit | Trade-off |
|---|---|---|---|
| 40 A | thickness ≤ 0.47 in clean claim | Sheet and light plate within ~3/8–0.47 in | Too small for routine 1/2 in clean cuts |
| 50 A | thickness ≤ 1/2 in clean @ 220 V | Jobs that clear 40 A but stay within 1/2 in | Capacity drops on 110 V; still short of 5/8 in clean |
| 65 A | thickness ≤ 5/8 in clean @ 220 V | Heavier plate that clears 50 A but stays within 5/8 in | Largest class on this ladder; verify live listing |
| NO_MATCH (above ladder) | thickness > 5/8 in | Daily clean cuts beyond this site’s ceiling | Do not force the 65 A class — size up outside this screen |