Miller
907711
Maxstar 161 STH
100% · 10.0 min on · 0.0 min off · 90 A
First percent on the sheet for this voltage. TIG, 120 V: 90 A at 13.6 VDC, 100% duty cycle, and 130 A at 15.2 VDC, 30%.
100% · 10.0 min on · 0.0 min off · 110 A
First percent on the sheet for this voltage. TIG, 240 V: 110 A at 14.4 VDC, 100%, and 160 A at 16.4 VDC, 20%.
Does not pass 120V/15A
Sheet
Copied from the cited page. Not taken from another model or a review.
| Spec | Published value | Source, checked 2 November 2026 |
|---|---|---|
| Process | Stick (SMAW), Lift-Arc TIG (GTAW), high-frequency TIG (GTAW), and pulsed TIG (GTAW-P). High frequency and pulse are marked STH model only. | Quick specs, Processes |
| Output amp range | 120 V: 5–130 A DC TIG and 20–90 A DC stick. 240 V: 5–160 A DC TIG and 20–160 A DC stick. | Quick specs, Amperage Range, and the specifications table |
| Rated duty cycle | TIG, 120 V: 90 A at 13.6 VDC, 100% duty cycle, and 130 A at 15.2 VDC, 30%. TIG, 240 V: 110 A at 14.4 VDC, 100%, and 160 A at 16.4 VDC, 20%. Stick, 120 V: 60 A at 22.4 VDC, 100%, and 90 A at 23.6 VDC, 30%. Stick, 240 V: 110 A at 24.4 VDC, 100%, and 160 A at 26.4 VDC, 20%. | Specifications table, Rated Output |
| Input voltage and plug | 120–240 V, 1-phase. Amps input at the higher duty-point ratings: TIG 22.6 A at 120 V and 15.05 A at 240 V; stick 23.16 A at 120 V and 22.55 A at 240 V. Separate 120 V and 240 V power cords are included. | Quick specs, Input Power, and the specifications table |
| Wire or rod size | Not published by manufacturer | The specifications table does not print a tungsten or stick-electrode diameter range. |
| Weight | 13 lb. (5.9 kg). | Quick specs, Net Weight |
| Material thickness | Not published by manufacturer | The quick specs and the specifications table do not print a material thickness. |
Notes on the source
- The quick specs do not name a weld metal. TIG on this sheet is DC.
Manufacturer page · Job check · Miller
From the table
What output does the Maxstar 161 STH publish?
120 V: 5–130 A DC TIG and 20–90 A DC stick. 240 V: 5–160 A DC TIG and 20–160 A DC stick. Source: https://contenthub.itwwelding.com/api/public/content/miller-electric-mfg-llc/spec-sheet/PIM/787461-dc27-5.pdf
What duty cycle does the Maxstar 161 STH publish?
TIG, 120 V: 90 A at 13.6 VDC, 100% duty cycle, and 130 A at 15.2 VDC, 30%. TIG, 240 V: 110 A at 14.4 VDC, 100%, and 160 A at 16.4 VDC, 20%. Stick, 120 V: 60 A at 22.4 VDC, 100%, and 90 A at 23.6 VDC, 30%. Stick, 240 V: 110 A at 24.4 VDC, 100%, and 160 A at 26.4 VDC, 20%. Source: https://contenthub.itwwelding.com/api/public/content/miller-electric-mfg-llc/spec-sheet/PIM/787461-dc27-5.pdf
What input does the Maxstar 161 STH publish?
120–240 V, 1-phase. Amps input at the higher duty-point ratings: TIG 22.6 A at 120 V and 15.05 A at 240 V; stick 23.16 A at 120 V and 22.55 A at 240 V. Separate 120 V and 240 V power cords are included.
Which processes does the Maxstar 161 STH publish?
TIG, stick.