Miller Spectrum 375 X-TREME Portable Air Plasma Cutter, 30 A

A 19 lb air plasma cutter that runs from 120 V or 240 V supplies

The Miller Spectrum 375 X-TREME is a portable 30 A air plasma cutter intended for maintenance crews, light fabrication, HVAC ductwork, body shops and quick-turn prototyping. Miller rates it at 3/8 in. (9.5 mm) clean cut on mild steel and 5/8 in. (15.9 mm) severance, and the whole unit weighs 19 lb (8.6 kg) with the torch, so one person can carry it by the shoulder strap to the cutting position.

Its Auto-Line circuitry connects to 120 to 240 V single-phase power at 50 or 60 Hz without relinking the machine. Multi-voltage plug adapters (MVP) let the operator choose the plug that matches the receptacle on site, and line voltage compensation holds performance when the supply fluctuates by up to plus or minus 15 percent. Miller also states that the unit gives complete cutting capability from an engine-driven welder or generator with a 240 V receptacle of 4 kW or more, which suits remote field work.

Technical specifications

For aluminum and other metals with high thermal conductivity, Miller states that cutting capability is derated by as much as 30 percent.

Mild steel cut speeds at 30 A and 20 A

Miller lists recommended travel speeds that are about 80 percent of maximum. At 30 A (240 V or a 30 A, 120 V circuit): 1/16 in. at 240+ ipm, 1/8 in. at 100 ipm, 3/16 in. at 63 ipm, 1/4 in. at 36 ipm, 3/8 in. at 18 ipm, 1/2 in. at 10 ipm and 5/8 in. at 6 ipm. At 20 A (120 V, 15 A circuit): 1/16 in. at 158 ipm, 1/8 in. at 50 ipm, 3/16 in. at 33 ipm, 1/4 in. at 17 ipm, 5/16 in. at 8 ipm and 3/8 in. at 6 ipm, with a 3/8 in. maximum sever on the lower setting.

Operator aids include LED indicators for power, pressure, cup and temperature, automatic air regulation that compensates for input pressure variation, and Auto-Refire, which keeps the pilot arc cycling when cutting expanded metal or several pieces without re-triggering.

Ordering, accessories and what to confirm before ordering

The complete package is stock number 907529: 120-240 V, 50/60 Hz, with a 12 ft XT30 torch, work clamp, X-CASE carrying case, 10 ft MVP power cord with 5-15P and 6-50P plugs, shoulder strap and a consumables box with 2 electrodes, 2 tips, deflector and air fitting. Printed accessory numbers include the XT30 torch 249949, consumable kit 253520, X-CASE 300184, full KVA adapter cord 300517, plasma standoff roller guide 253054, circle-cutting guide 253055, in-line air filter kit 228926 with element 228928, and a 5-20P MVP plug 219259 (optional).

Confirm the receptacle standard and supply voltage on site, because the Oman and GCC socket types differ from the NEMA plugs supplied, the thickness and metal to be cut, and the clean dry compressed air available. For thicker or higher-duty work compare the Miller Spectrum 875 or browse all Plasma Cutting Systems.

How the Miller Spectrum 375 X-TREME works

The cutter forces compressed air through a small nozzle. An electric arc heats the air into a plasma jet. The jet melts the metal and blows the molten metal out of the cut. The work clamp completes the circuit between the torch and the plate.

Where the Spectrum 375 X-TREME is used

• Maintenance crews
• Light fabrication
• HVAC ductwork
• Body shops
• Quick-turn prototyping

Selection checklist for the Spectrum 375 X-TREME

• Metal type and thickness
• Available supply, 120 V or 240 V
• Generator size on remote sites
• Compressed air supply
• Duty cycle
• Weight and carrying
• Torch cable length
• Consumable supply

Installation, commissioning and maintenance notes for the Spectrum 375 X-TREME

Connect clean dry air at the required flow and pressure. Choose the plug adapter that fits the receptacle. Clamp the work cable to clean metal. Check the torch consumables before cutting. Keep the air filter clean.

Requesting a quotation for the Miller Spectrum 375 X-TREME

Please send the metal type, the thickness and the supply you have on site. Seven Star LLC serves industrial customers in Oman and the GCC and replies with a quotation based on the information provided.

Spectrum 375 X-TREME cutter type

It is a portable air plasma cutter.

Spectrum 375 X-TREME output

The rated output at 240 V is 30 A.

Spectrum 375 X-TREME duty cycle

The duty cycle at 240 V is 40 percent.

Spectrum 375 X-TREME input power

The input is 120 to 240 V single phase, 50 or 60 Hz.

Spectrum 375 X-TREME Auto-Line

Auto-Line connects to the supply without relinking the machine.

Spectrum 375 X-TREME plug adapters

Multi-voltage plug adapters let the operator match the site receptacle.

Spectrum 375 X-TREME voltage compensation

Line voltage compensation covers supply swings of plus or minus 15 percent.

Spectrum 375 X-TREME rated cut

The rated cut on mild steel is 3/8 in. (9.5 mm).

Spectrum 375 X-TREME severance cut

The severance cut is 5/8 in. (15.9 mm).

Spectrum 375 X-TREME gas supply

The gas supply is 5.0 scfm at 90 psi minimum.

Spectrum 375 X-TREME torch

The XT30 hand-held torch has a 12 ft (3.7 m) cable.

Spectrum 375 X-TREME weight

The unit weighs 19 lb (8.6 kg) with the torch.

Spectrum 375 X-TREME generator use

The cutter runs from a generator with a 240 V receptacle of 4 kW or more.

Cutter records for the Spectrum 375 X-TREME

Record the consumable changes, the air quality checks and the cut quality.

Choosing the right Spectrum 375 X-TREME supply

Choose the supply voltage from the thickness you need to cut.