A professional 45 A cutter for fabrication shops and farms with a 240 V circuit that cut 5/8 in steel regularly. Pick it for long consumable life and easy setup, not low price.
Amazon $2,940 Welder Supply $2,785
A light, dual voltage Miller cutter for shops and job sites that cut up to 5/8 in steel day after day. Worth it for buyers who value Miller build and dealer service; hobby users can pay much less.
- 40 AOutput
- 5/8 inRated cut
- 60% at 40 A, 40 °CDuty cycle
- 120/240 VInput
Price checked November 2, 2026. As an Amazon Associate we earn from qualifying purchases.
- Cuts 5/8 in steel cleanly on 240 V and 3/8 in on a household outlet
- Runs 60% of the time at full 40 A, so long cuts rarely stop to cool down
- At 21 lb it carries on a shoulder strap
- Pilot arc restrikes by itself on expanded metal and grates
- Costs about twice as much as other 40 A pilot arc cutters
- Three year warranty, shorter than some budget brands offer
The Miller Spectrum X-TREME family
Every Miller Spectrum X-TREME model we rank, smallest first. Ratings compare each against its own size.
| Model | Output | Rating | Price |
|---|---|---|---|
| Miller Spectrum 375 X-TREME | 30 A | 2.9/5 | $1,940 |
| Miller Spectrum 625 X-TREME (this one) | 40 A | 3.6/5 | $2,508 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | 907579 |
|---|---|
| Cutting | |
| Input voltage | 120/240 V |
| Maximum output | 40 A |
| Rated cut, mild steel | 5/8 in |
| Sever cut, mild steel | 7/8 in |
| Rated duty cycle | 60% at 40 A, 40 °C |
| Pilot arc | Yes |
| Air and build | |
| Air supply | 6 cfm, 90 psi |
| Weight | 21 lb |
| Warranty | 3 years |
| Released | 2011-11 |
Alternatives in this size
A compact, dual voltage cutter for home shops and repair work that cut up to 1/2 in steel. It costs more than import brands but brings Hypertherm consumable life and a six year warranty.
Amazon $1,595 Welder Supply $1,384A light dual voltage cutter for sheet metal and steel up to 3/8 in, with Hobart’s long warranty. Buyers who cut thicker steel should step up to the 40i.
Amazon $1,617.99 Cyberweld $1,565Compare
Compare the Miller Spectrum 625 X-TREME with any other plasma cutter →
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