ARC WELDING
Reliable Arc Welding Power for Industrial Applications
The SigmaWeld Arc Welding Machine delivers stable arc performance, deep penetration, and reliable results for SMAW (MMA) applications. Built with advanced inverter technology, it ensures smooth welding, minimal spatter, and consistent weld quality across various materials—making it ideal for fabrication, construction, and industrial maintenance.
key features
Stable Arc Performance
Delivers smooth, consistent arcs with minimal spatter and clean weld beads.
Advanced Inverter Technology
IGBT-based inverter design ensures high efficiency and precise current control.
Strong Penetration
Provides deep and uniform penetration across different material thicknesses.
Wide Electrode Compatibility
Supports E6013, E7018, E6010, and stainless steel electrodes.
Built-in Protection Systems
Thermal and over-current protection ensure safe, reliable operation.
Compact & Portable Design
Lightweight construction for easy handling in workshops and on-site jobs.
AVAILABLE MODELS
Different models are available to suit varying current requirements and duty cycles.
Features
- Constant Current Output Provided
- User Friendly panel contains knob for current and Arc force adjustment
- Energy Saving inbuit, which gives 40% to 70% power saving over rectifier & transformer based technology
- Excellent Welding Performance in MMA For all steels & Alloys
- Protection and safety for Overvoltage, overcurrent, low voltage, thermal shutdown for High temperature
SigmaWeld Electrode Rutile Basic Cellulosic INDY250MMA 4.0 120-170 140-200 100-150 INDY400MMA 5.0 150-250 190-260 140-230 INDY600MMA 6.3 220-370 250-320 200-300
Specification | INDY250MMA | INDY400MMA | INDY600MMA |
Rated Input Voltage | 3∅ 415 V, ±15%, 50Hz | 3∅ 415 V, ±15%, 50Hz | 3∅ 415 V, ±15%, 50Hz |
Power (KVA)@100% | 7KVA | 12.6KVA | 22KVA |
Duty Cycle @ 40 C 1 | 100% @200A | 100% @300A | 100% @400A |
Open circuit voltage | 80V | 80V | 80V |
Output range | 5-250Amps | 5-400Amps | 5-600Amps |
(D⨯W⨯H)mm | 610×300×500 | 610×300×500 | 610×380×650 |
Weight | 35kg | 35kg | 50kg |
Protection, Safety Features & Parameter
Thermal shutdown | In built (over temperature Indication) |
Under voltage | In built (Phase failure Indication) |
Over current | In built (Phase failure Indication/MOV) |
IGBT Peak current | In built |
Energy saving | In built |
Cooling type | Forced Air cooling |
1)Arc force control | Adjusted |
2)Arc breaking control | In built |
3)Hot start current | 30% |
4)Hot start duration (approx.) | 300m sec |
5)Digital Ammeter | In built |
Versatile Electrode Compatibility
SigmaWeld Arc Welding Machines are engineered to operate reliably with a wide range of SMAW (MMA) electrodes, allowing welders to handle multiple materials and applications using a single machine. This flexibility reduces the need for multiple power sources and makes SigmaWeld ideal for workshops and industrial job sites.
Mild Steel Electrodes
- E6013 – General-purpose welding
- E7018 – Low-hydrogen structural welding
Stainless Steel Electrodes
- SS308 – Fabrication and repair
- SS316 – Corrosion-resistant applications
Root & Deep Penetration Electrodes
- E6010 – Deep penetration and root pass
Other SMAW Electrodes
- Supports commonly used MMA/SMAW electrodes
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