Thermamax TSM250MIG Multi-Process Inverter Welder – MIG/MAG/MMA/Lift-TIG
The Thermamax TSM250MIG is a powerful and compact multi-process inverter welder designed for MIG/MAG, MMA, and Lift-TIG welding. Equipped with advanced IGBT Inverter Technology, it offers higher efficiency, faster switching speeds, and stable welding performance while minimizing power consumption. Its integrated trolley with a built-in wire spool feeder ensures easy mobility and gas cylinder handling, making it ideal for both industrial and workshop use. Featuring low-noise operation and a digital display for precise control, the TSM250MIG delivers excellent arc stability, reduced spatter, and clean weld shaping. Designed to withstand harsh environments, its robust metal shell protects internal components, ensuring durability, water resistance, and corrosion resistance. Note: This Kit only Includes the TSM250 Mig welding Machine. Cable & other accesories sold seperately.
Description
Technical Specifications
Input Power Supply: Single-phase AC220–240V, 50/60Hz
Rated Input Capacity: 12 KVA
Rated Output Current: 250A
Rated Output Voltage: 26.5V
Duty Cycle: 35% @ 40°C, 60% @ 25°C
No-Load Voltage: 52V
Output Current Range (MMA): 10–220A
Output Current Range (MIG): 30–250A
Output Voltage Range (MIG): 11–29V
Wire Diameter Supported: 0.6 / 0.8 / 0.9 / 1.0 mm
Wire Spool Capacity: 5kg / 15kg / 18kg
Wire Feed Speed Range: 15–16 m/min
Cooling Mode: Air-cooled
Insulation Class: F
Protection Class: IP21S
Power Factor: 0.7
Efficiency: 85%
Key Features
Multi-Process Capability: MIG/MAG, MMA, and Lift-TIG welding in one machine.
IGBT Inverter Technology: Higher efficiency, lower energy draw, and stable voltage control.
Wire Compatibility: Supports 0.6 / 0.8 / 0.9 / 1.0 mm welding wire.
Easy Arc Start: Minimal spatter with excellent weld shaping.
Digital Display: Clear voltage and amperage readout for precise adjustments.
Integrated Trolley: Built-in 15kg wire spool feeder with gas cylinder support.
Durable Construction: Water-resistant, anti-static, corrosion-resistant metal casing.
Machine Requires The Following Items
EWELDA019 – MAC AFRIC 2 Pcs ARC MMA Welding Cable Set (Dinse Plug)
EWELDA025 – MAC AFRIC Jack Plug Dinse Male 35–50 mm² (Pair)
EWSTRT360 – MAC AFRIC Strike TIG Torch SR17V x 4m
EWELMA025 – MAC AFRIC MB-25 Binzel Type MIG Torch
Beginner’s Guide to Buying a Welder
Not sure which welding machine is right for your workshop, business, or DIY needs? This guide explains the differences between MIG, TIG and ARC welding, and helps you choose the correct machine size.
Click here to read: Beginner’s Guide to Buying a Welder
Frequently Asked Questions
MIG vs TIG vs ARC welding – which one should I use?
MIG is ideal for fast production and thicker materials, MMA (ARC) is great for outdoor and structural work, and TIG offers precise, clean welds for thinner materials and stainless steel. This multi-process machine allows you to switch between methods depending on your project.
What welder is best for home use or DIY?
A 250A single-phase inverter welder like this model is excellent for home workshops, gates, trailers, light structural steel and general repairs, while still running on standard 220–240V power.
What equipment do I need to start welding?
You will need the correct torch or welding cables, earth clamp, welding helmet, gloves, appropriate wire or electrodes, and shielding gas for MIG or TIG applications. Refer to the required accessories section above for compatible items.
Why does my welder trip the power?
Tripping can occur due to insufficient plug rating, long thin extension leads, or incorrect input supply. Ensure you are using the correct circuit rating and heavy-duty extension leads suitable for high-current equipment.
What size welding cable should I use?
For machines up to 250A, 35–50 mm² dinse-compatible welding cables are recommended to ensure safe current transfer and prevent overheating.
What safety precautions should I take when welding?
Always wear a proper welding helmet, gloves, flame-resistant clothing, and ensure adequate ventilation. Keep flammable materials away and never weld in damp conditions.
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