Telwin Superior TIG 251 DC: Three-Phase DC TIG and MMA Inverter Welder
The Telwin Superior TIG 251 DC (product code 816029) is a microprocessor-controlled DC inverter welder for TIG and MMA. It delivers 10-250 A on a 400 V three-phase supply, with HF or Lift arc ignition. It suits steel, stainless steel, titanium, copper, nickel and their alloys. At 11.26 kg, it is easy to move around a workshop.
Key features
- HF and Lift ignition: choose the start method per job
- Pulse and EASY PULSE: controlled heat input on thin or easily deformed material
- THINSPOT: fast, accurate TIG spot and tack welding of thin sheet, designed for stainless steel and also usable on steel and titanium
- TIG controls: bi-level, start/end current, spot time, pre/post gas, up/down slope, DC balance, square wave frequency
- MMA mode: Arc Force, Hot Start and Anti-Stick; 1.6-5 mm electrodes
- VRD (Voltage Reduction Device): added safety in damp environments
- Remote control and G.R.A. water cooling connection
- Protections: thermostatic, overvoltage, undervoltage, overcurrent and water cooling unit
This is a DC-only machine. For aluminium you need AC TIG, so look at the Telwin TIG 222 AC/DC.
Frequently asked questions
Can the Telwin Superior TIG 251 DC weld aluminium?
No. It is a DC machine, and aluminium needs AC TIG. Choose an AC/DC model such as the Telwin TIG 222 AC/DC.
What power supply does it need?
400 V three-phase, 50/60 Hz. Maximum absorbed current is 12 A.
What is the duty cycle?
230 A at 20% under EN60974-1: 2 minutes of welding in a 10-minute cycle. At 35% duty it delivers 150 A, and at 60% it delivers 115 A.
What else do I need to start TIG welding?
This model is the machine only. A TIG torch, gas regulator and work clamp are separate. Telwin offers them as the ST26 TIG Welding Kit, or bundled with the machine as the Superior TIG 251 DC + ACC.
Can I add a remote control, water cooling or a trolley?
Yes. It has connections for a remote control and a G.R.A. water cooling unit. Telwin lists the RC-20 10 m remote, two trolleys (Arctic and America) and ST26 and ST26 PRO-P torches as options. All are sold separately.
Why buy the Telwin Superior TIG 251 DC from KWS?
Pricing is available on request. Use the Make Enquiry button or call 056 772 9949, or email info@kws.ie. Kilkenny Welding Supplies has been Irish-owned since 1975, with depots in Cuffesgrange, Co. Kilkenny and Portlaoise, Co. Laois. Our team will confirm your power supply and torch requirements before you buy, and service the machine afterwards.