Best plasma cutters for a home shop, by clean cut, air and circuit
LOTOS, PrimeWeld, Bestarc, YesWelder and ArcCaptain plasma cutters compared on published clean cut, air flow at a stated pressure, input amps and breaker.
Every 50 amp plasma cutter on Amazon claims three quarters of an inch. That figure is the sever cut: the most the machine can hack through at a crawl. What you will use is the clean cut, and what decides whether the machine works in your garage is the air and the circuit behind it.
The LOTOS LTP5505D is the pick for most home shops: 5/8 inch clean cut on 240 volts, a compressor over 4.0 SCFM at 65 PSI, a 40 amp breaker, and documents that agree with each other. On 120 volts, every cutter here that publishes a figure asks for a 30 to 50 amp breaker.
Clean cut beside air and circuit
As published by each maker, checked 2026-09-19. Where a maker’s own documents conflict, we print the lower cut figure and note it.
| Cutter | Clean cut, 240 V / 120 V | Air required | Input amps, 240 V / 120 V | Breaker, 240 V / 120 V | Duty cycle basis |
|---|---|---|---|---|---|
| LOTOS LTP5505D | 5/8 in / 3/8 in | Over 4.0 SCFM at 65 PSI | 27 / 38 | 40 A / 50 A | 60 percent at 55 A, 40 C |
| PrimeWeld CUT50DP and CUT50D | 12 mm / 12 mm | 5 CFM at 80 PSI (also printed as 5 L/min) | 35 to 40 / 40 to 45 | 50 A / 30 A | 60 percent at 50 A, 25 C |
| Bestarc BTC500DP 7GEN | 12 mm / 10 mm | 150 L/min, labelled CFM | 12 to 29 / 20 to 38.5 | Not published | 60 percent, no amperage, 25 C |
| YesWelder CUT-55DS PLUS | 10 mm / 8 mm | 6.0 CFM or more, no pressure | I1max 34 / 43 | Not published | 60 percent at 55 A, IEC 60974-1 |
| ARCCAPTAIN CUT50 | 3/8 in / 1/4 in (lowest of four claims) | Compressor of 5 CFM at 90 PSI | Not published | Not published | 60 percent, no temperature |
| YesWelder CUT-50DS | Not published | Not published | Not published | Not published | Not published |
Sources: LOTOS LTP5505D manual; PrimeWeld CUT50DP page and CUT50D page; Bestarc manual; YesWelder CUT-55DS PLUS manual; ARCCAPTAIN CUT50 manual.
Check the compressor before the cutter
Find your compressor’s delivery figure, in CFM or SCFM at a stated pressure, on its label. It has to meet the cutter’s requirement at about the same pressure, continuously. Tank size only buys time. A small pancake compressor will run short cuts and starve on long ones. Dry air matters as much as volume: water in the line eats consumables. The full comparison is in plasma cutter air requirements.
The 78 F duty cycles
LOTOS rates duty cycle at 40 C (104 F), the temperature the international standard uses. PrimeWeld and Bestarc rate theirs at 25 C (78 F). A machine tested in cooler air posts a better number, so the two groups cannot be compared directly. What duty cycle means in minutes is the same for cutting as for welding.
The one we could not rank
Hypertherm’s Powermax30 XP is the reference machine in this class. Its manual prints the output available on a 15, 20 and 30 amp circuit, air as 4 SCFM at 80 PSI, and duty cycle at 40 C. We could not confirm a buy box for it on Amazon, so it is not ranked or linked. If you want a cutter and a welder in one case, two machines in best multiprocess welders include one.
Where the sparks go
Plasma throws molten metal out of the underside of the cut, several feet. Clear below and behind the work, and never cut a container that has held fuel. Eye protection figures are in the plasma rows of the helmet shade chart. Have a licensed electrician plan any new circuit from the cutter’s manual.
How we score
Every pick is scored on the same five criteria. We work from published specs, not from bench tests: every figure comes from the manufacturer’s manual, spec sheet or current listing at write time, with the model number and the date checked. We never estimate a number a manufacturer does not publish.
Specs published
Whether the manufacturer publishes what a buyer needs: duty cycle at a stated amperage, input amp draw, and the breaker the machine requires. A missing number costs points and is marked "Not published".
Arc time
Duty cycle (the share of a ten minute window a machine can weld before it must cool, rated at 104 F under IEC 60974-1) converted into minutes of arc per ten at a working amperage.
Build & parts
Wire drive, torch and leads, and whether consumables and spare parts are easy to buy. Owner reports are attributed to their source and never presented as our testing.
Power fit
Input voltage options and amp draw set against the circuits a home garage usually has. The work of adding a circuit belongs to a licensed electrician.
Value & warranty
What you get for the price, weighted by warranty length and how the brand handles service and parts.
Price bands, relative to the picks on this page: $ budget · $$ mid-range · $$$ premium · $$$$ top shelf. Amazon prices move constantly, so we show bands rather than dollar amounts; each button shows the live price.
Best documented, and the pick for most garages
LOTOS LTP5505D
LOTOS publishes every number Ray needs, and its documents agree with each other. Ideal clean cut is 5/8 inch on 240 volts and 3/8 inch on 120. Duty cycle is 60 percent at 55 amps, rated at 40 C, the standard test temperature. Input is 27 amps on 240 volts with a 40 amp breaker, and 38 amps on 120 with a 50 amp breaker. It wants a compressor delivering more than 4.0 SCFM at 65 PSI. Pilot arc, a front mounted regulator with gauge, 18 pounds, and a three year limited warranty that requires registration. This model replaced the long-selling LTP5000D on the same listing.
Pros
- Clean cut, duty cycle basis, input amps, breaker and air flow all published
- Pilot arc with 2T and 4T trigger modes
- Three year limited warranty, first year replacement
Cons
- 120 V use calls for a 50 A breaker
- Warranty needs registration
- Torch model not named, so check consumables before stocking up
Pilot arc with a published breaker size
PrimeWeld CUT50DP
PrimeWeld prints a breaker size, which most rivals do not: 50 amps on 240 volts and 30 on 120, with input of 35 to 40 and 40 to 45 amps. Clean cut is 12 mm and duty cycle is 60 percent at 50 amps. That rating is at 78 F, not the 104 F standard, so it is not comparable with LOTOS or Hypertherm. Air is stated as 5 CFM at 80 PSI in one place and 5 litres a minute in another, and the manual still calls this pilot arc machine a touch start. Three year warranty, AG60 consumables. More on the company in our [PrimeWeld](/primeweld/) page.
Pros
- Breaker, input current and kVA published for both voltages
- Non-touch pilot arc; widely available AG60 consumables
- Three year warranty
Cons
- Duty cycle rated at 78 F
- Page and manual disagree on air figures and start type
- Highest price band here
Same power, contact start, lower price
PrimeWeld CUT50D
The CUT50DP without the pilot arc. Output, 12 mm clean cut, input current, breaker sizes and the 78 F duty cycle rating are identical in PrimeWeld's tables. The torch has to touch the work to start, which suits clean new plate and is slower on paint, rust and mesh. PrimeWeld gives five different weights for it across its page and manual, from under 20 pounds to 23.
Pros
- Breaker and input current published
- Three year warranty
- Long sales record
Cons
- Contact start only
- Three different air pressure ranges across PrimeWeld's documents
- Duty cycle rated at 78 F
Check the generation before you order
Bestarc BTC500DP
A pilot arc cutter sold in several generations from one listing, with different ratings. The 7GEN, which the listing mostly describes, publishes a 12 mm clean cut on 220 volts and 10 mm on 110, input of 12 to 29 and 20 to 38.5 amps, and a 60 percent duty cycle at 78 F with no amperage attached. The 8GEN states 50 percent at 50 amps. Only the 10GEN publishes a circuit: 40 amps on 110 volts, 30 on 220. The air flow row is labelled CFM and printed in litres. Three year warranty.
Pros
- Input current range and kVA published
- Pilot arc with AG60P consumables; three year warranty
- Built in regulator and filter on the newest version
Cons
- Ratings differ by generation and the listing mixes them
- Duty cycle has no amperage on two of three versions
- Air flow units are mislabelled
Best input data, on a listing with several versions
YesWelder CUT-55DS
YesWelder's current CUT-55DS PLUS is the only cutter here whose rating plate prints both nameplate input currents: I1max 43 amps on 110 volts and 34 on 220. It cites IEC 60974-1, with 60 percent at 55 amps, and a 10 mm clean cut on 220 volts. Air is 6.0 CFM or more, with no pressure stated. The Amazon listing also carries the older PRO version, which used a different torch and a 30 percent rating. Confirm which one ships.
Pros
- I1max and I1eff published; standard named
- Two year warranty
- Lowest price band with pilot arc
Cons
- 43 A maximum input on 110 V; no breaker guidance
- Air flow given without a pressure
- Several versions share one listing
Cheapest, with the least consistent paperwork
ARCCAPTAIN CUT50
The lowest price here, and the hardest to pin down. ArcCaptain gives four different sets of cut figures: clean cut on 220 volts is 1/2 inch in the spec table, 3/8 inch in the description, and half an inch written as 10 mm in the manual. We print the lowest, 3/8 inch. Input current, breaker and generator are not published. It asks for a compressor of at least 5 CFM at 90 PSI. Contact start with a PT31 torch. Two year warranty.
Pros
- Lowest price band
- Compressor minimum stated with a pressure
- Built in regulator and gauge
Cons
- Four conflicting cut thickness claims from the maker
- No input current or breaker published
- Contact start only
Sold with no manufacturer documentation
YesWelder CUT-50DS
It is on this list as a warning more than a pick. The CUT-50DS sells well on Amazon, and it does not appear anywhere on YesWelder's own site: no product page, no manual, no spec table. Every figure you can find for it comes from the listing itself. With no published input current, air requirement or duty cycle, you cannot plan a circuit or a compressor for it. Buy the documented CUT-55DS instead.
Pros
- Two hundred reviews at a solid rating
- From a brand that documents its other machines
Cons
- No manufacturer manual or spec page found
- Input current, air flow and duty cycle: not published
- Nothing for an electrician to work from
Frequently asked questions
What size plasma cutter do I need for quarter inch steel?
Look at clean cut, not the headline. Every machine here publishes a clean cut of at least 8 mm, about 5/16 inch, on 220 to 240 volts, so quarter inch plate is inside their stated range on that input. On 110 to 120 volts the published clean cuts fall to between 1/4 and 3/8 inch, and the circuit becomes the limit.
Is pilot arc worth paying for?
If you cut painted, rusty or expanded metal, yes. A pilot arc starts without touching the work and keeps going across gaps. A contact start torch has to touch clean metal to fire, which is fine for new plate and slower on anything else. Pilot arc torches also use different, usually dearer, consumables.
Can I run a plasma cutter on a household outlet?
Only at reduced output. The makers that publish a 120 volt figure list 38 to 45 amps of input and a 30 to 50 amp breaker, and a household circuit supplies 15 or 20. Hypertherm is the exception in this class: its Powermax30 XP manual lists the output available on a 15, 20 and 30 amp circuit, which is the table every maker should print.