Hypertherm Powermax125
Key Specifications
output current
input voltage
cut capacity rated
cut capacity production
cut capacity severance
torch options
How much does the Hypertherm Powermax125 cost?
Estimated price range
Our best estimate for a cnc plasma cutting in this class — not a quote from Hypertherm. Configuration moves it a long way.
Overview
With a 100% duty cycle at its full 125 A output, the Hypertherm Powermax125 can hold maximum current through a long mechanized nest without duty-cycle pauses. Hypertherm lists a 30–125 A output range and a recommended cut capacity of 38 mm (1-1/2 in) in mild steel at 457 mm/min (18 ipm).
That continuous rating applies on the supplies the unit is built for, 480 V or 600 V three-phase at 50/60 Hz. No lower voltage and no single-phase input is listed, which is the first thing to check against the building. Away from mains power, an engine drive has to provide 40 kW or 50 kVA for full 125 A output. The two voltage versions differ slightly in weight: 47.9 kg (105.7 lbs) for the 480 V unit and 47.5 kg (104.7 lbs) for the 600 V unit.
On a cutting table, piercing sets the practical ceiling. Pierce capacity is 25 mm (1 in), so the band between 25 mm and the 38 mm recommended capacity is reachable only from a plate edge. Beyond that, severance capacity is 57 mm (2-1/4 in) in mild steel at 125 mm/min (5 ipm), a speed that suits trimming the odd thick section and not a production run.
The Powermax105 from the same range weighs 45 kg (100 lbs) in its 200–600 V CSA version, so the move to 125 A adds little mass to wheel around the shop. Gas is clean, dry, oil-free air or nitrogen. Hypertherm lists a warranty of 3 years on the power supply and 1 year on the torch and leads.
Full Specifications
| Parameter | Value |
|---|---|
| Output Current | 30–125 A |
| Input Voltage | 480/600 V, 3-PH, 50/60 Hz |
| Cut Capacity Rated | 32 mm (1-1/4 in) mild steel |
| Cut Capacity Production | 38 mm (1-1/2 in) mild steel |
| Cut Capacity Severance | 57 mm (2-1/4 in) mild steel |
| Torch Options | 75-degree hand torch, 15-degree machine torch, inline machine torch |
| Warranty | 3 years (power supply), 1 year (torch and leads) |
| Recommended Cut Capacity | 38 mm (1-1/2 in) at 457 mm/min (18 ipm) |
| Severance Capacity | 57 mm (2-1/4 in) at 125 mm/min (5 ipm) |
| Pierce Capacity | 25 mm (1 in) |
| Output Voltage | 175 VDC |
| Duty Cycle | 100% @ 125 A, 480/600 V, 3-PH |
| Open Circuit Voltage | 320 VDC |
| Machine Weight | 480 V: 47.9 kg (105.7 lbs.) 600 V: 47.5 kg (104.7 lbs.) |
| Floor Space Required | 483 mm D; 233 mm W; 430 mm H (19" D; 9.2" W; 17" H) |
| Gas Supply | Clean, dry, oil-free air or nitrogen |
| Input Cable Length | 3 m (10 ft)* |
| Engine Drive Requirement | 40 kW or 50 kVA for full 125 A output |
Specifications sourced from hypertherm.com — verified 2026-10-03
Strengths & Limitations
Strengths
- 100% duty cycle at the full 125 A output on 480/600 V three-phase
- Recommended cut capacity of 38 mm (1-1/2 in) in mild steel at 457 mm/min (18 ipm)
- Pierce capacity of 25 mm (1 in) for parts that start inside the plate
- Severance capacity of 57 mm (2-1/4 in) in mild steel at 125 mm/min (5 ipm)
- Warranty listed as 3 years on the power supply and 1 year on the torch and leads
- Weighs 47.9 kg (105.7 lbs) at 480 V and 47.5 kg (104.7 lbs) at 600 V
Limitations
- Input is 480 V or 600 V three-phase; no lower-voltage or single-phase rating is listed
- Plate thicker than the 25 mm (1 in) pierce capacity has to be started from an edge
- Severance cuts at 57 mm (2-1/4 in) run at 125 mm/min (5 ipm), too slow for production work
- A generator must supply 40 kW or 50 kVA for full 125 A output
Best For
Frequently Asked Questions
01
The rating is 100% at 125 A on 480/600 V three-phase, so the power supply is rated to run at its maximum output without rest periods. On a table cutting long nests in thick plate, the limit on arc-on time then comes from the job and the consumables, not from the power supply.
02
Recommended cut capacity is 38 mm (1-1/2 in) in mild steel at 457 mm/min (18 ipm). Pierce capacity is 25 mm (1 in), so thicker plate needs an edge start. Severance capacity is 57 mm (2-1/4 in) in mild steel at 125 mm/min (5 ipm).
03
No single-phase rating is listed. The input row gives 480/600 V, three-phase, 50/60 Hz, and the duty cycle is stated for the same supplies. A site without one of those voltages needs a different arrangement, such as an engine drive able to provide 40 kW or 50 kVA for full 125 A output.
04
The 480 V unit weighs 47.9 kg (105.7 lbs) and the 600 V unit 47.5 kg (104.7 lbs). For comparison, the Powermax105 weighs 45 kg (100 lbs) in its 200–600 V CSA version, so the two are close enough that the same cart or table mount will suit either.
05
The warranty row gives 3 years for the power supply and 1 year for the torch and leads. The torch and leads are the parts that take the heat and handling, so note that they carry the shorter term when buying a system for daily table use.
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