400A DIGICON microprocessor-controlled Pulse TIG + DC TIG + SMAW welding machine. Fully digital parameter control, wide 330–500V generator-compatible input, and only 32 kg — built for precision fabrication and site welding.
@60% Duty
@100% Duty
Weight
DIGICON microprocessor controls peak current, background current, pulse frequency, and duty cycle independently — reduces heat input, minimises distortion on thin-wall SS, and produces consistent fish-scale bead profiles.
Fully operational from 330VAC to 500VAC, 3-phase — reliable on DG sets and generator-supplied sites where Indian grid voltage fluctuates. Critical for pipeline sites and plant shutdown jobs.
Supports E6013 and E7018 stick electrodes from Ø1.6 mm to Ø3.15 mm — covering job material thickness 1.0 mm to 6.0 mm for maintenance, structural repair, and field welding in Stick mode.
| Input Specifications | |
|---|---|
| Input Supply | 330–500 VAC, 3-Phase, 50/60 Hz — Generator Compatible |
| Nominal Input | 415 VAC, 3-Phase |
| Primary Switching Device | Discrete IGBT |
| Inverter Frequency | 20 kHz Full Bridge |
| Input KVA @ 400A | 17.8 KVA |
| Input Cable | 4-core 2.5 sq.mm with plug, 4 metres, open leads |
| Output Specifications | |
| Output Current Range | 10A to 400A |
| Output @ 60% Duty Cycle | 400A |
| Output @ 100% Duty Cycle | 310A |
| Max Open Circuit Voltage (OCV) | 85 VDC |
| Welding Processes | GTAW – Digital Pulse TIG + DC TIG (Constant Current) & SMAW – DC Stick (Constant Current) |
| TIG Arc Start | Inbuilt High Frequency (HF) Non-contact Start |
| Operation Modes | 2T / 4T |
| Control Type | DIGICON Microprocessor Digital Control |
| Polarity | DC+ / DC− |
| Protection & Insulation | |
| Ingress Protection Class | IP21 |
| Insulation Class | Class H (180°C) |
| Cooling Method | Forced Air (Fan Cooled) |
| Thermal Protection | Auto Thermal Cutout |
| Other Protections | Overcurrent (OC), Over Temperature (OT), Under/Over Voltage (UV/OV), Phase Loss (SP), VRD |
| Mechanical Specifications | |
| Dimensions (L × W × H) | 545 mm × 310 mm × 595 mm |
| Weight | 32 kg |
| Mobility | Integrated wheels |
| Lifting Support | Ergonomic handle |
| * Specifications subject to change without notice. Contact APS Welding for latest data sheet. | |
| Type | Diameter Range | Material | Typical Application | Current Range |
|---|---|---|---|---|
| E6013 SMAW | 1.6 – 3.15 mm | Mild Steel | General fabrication, light structural, sheet metal repair | 40A – 130A |
| E7018 SMAW | 2.5 – 3.15 mm | Mild / Structural Steel | Structural joints, maintenance welding, load-bearing components | 80A – 160A |
| WT20 / WC20 TIG | 1.6 – 4.0 mm | Tungsten Electrode | DC TIG on SS, mild steel, carbon steel, alloy steel & copper | 10A – 400A |
| ER308L / ER316L Filler | 1.6 – 3.2 mm | Stainless Steel Filler | TIG filler for SS 304/316 fabrication, pharma & chemical plant | — |
| ER70S-6 Filler | 1.6 – 3.2 mm | Mild Steel Filler | TIG filler for mild and carbon steel pipe welding | — |
| Specification | Discover 400 TIG | Genesis 400HD TIG | Genesis 400 HDPulseTIG | Apollo 400 ★ |
|---|---|---|---|---|
| Output @ 60% Duty | 400A | 400A | 400A | 400A |
| Output @ 100% Duty | 300A | 310A | 310A | 310A |
| IGBT Type | Module | Module | Discrete | Discrete |
| Pulse TIG | — | — | ✓ Built-in Knob | ✓ DIGICON Digital |
| Control Type | Basic Knob | Basic Knob | Knob-based Pulse | Microprocessor Digital |
| HF Arc Start | ✓ | ✓ | ✓ | ✓ |
| Voltage Range | 330–500V | 330–500V | 330–500V | 330–500V |
| Weight | 31 kg | ~38 kg | 50.5 kg | 32 kg |
| Best For | Economy TIG + SMAW | Site TIG (IP23) | Pulse TIG Fabrication | Premium Digital Precision |
Delivers clean, strong & spatter-free welds
Excellent after-sales support
Apollo 400 Welding Machine – APS Welding presents the Portable, fully digital, Powerful, and Productive Stick Electrode TIG Welding Machine. This small wonder weighs only 32 Kg and yet does perform the toughest jobs with ease.
APS Welding presents the TIG Welding Machine 400 Amp, designed for professionals who demand high precision and reliability. Built with IGBT inverter technology, this TIG machine delivers smooth arc stability and high-frequency ignition, making it ideal for welding thin sheets as well as heavy components with perfection.
The TIG Welding Machine 400 Amp is equipped to handle both DC TIG and MMA welding processes, ensuring flexibility across applications like stainless steel, carbon steel, alloy metals, and copper. With a rated output of 400 Amps at a 60% duty cycle, it meets the toughest industrial demands with ease.
This machine supports 2T/4T operation modes, adjustable post-flow and pre-flow gas settings, and digital controls that give welders complete command over every parameter. The compact yet rugged body makes the TIG Welding Machine 400 Amp perfect for fabrication shops, pipeline work, and heavy-duty maintenance.
Whether you’re a fabricator, contractor, or plant engineer, the TIG Welding Machine 400 Amp by APS Welding guarantees precise welds, reduced spatter, and minimal rework—enhancing overall productivity and weld quality.
| Accessory | Specification | Details | Link |
|---|---|---|---|
| TIG Torch | Gas-cooled or Water-cooled, 400A rated | Water-cooled torch recommended for continuous Pulse TIG at high duty cycles. | View TIG Torches → |
| Earthing Clamp | EC20 — 16 sq.mm welding cable | Heavy-duty spring-jaw earthing clamp for stable grounding connection. | View Earthing Clamps → |
| Argon Regulator | Single-stage regulator | For TIG shielding gas — use 99.99% purity argon. | View Gas Accessories → |
| Flowmeter | Rotameter-type | Precision gas flow measurement for consistent shielding coverage. | View Gas Accessories → |
| Gas Hose Pipe | Standard length | Connects regulator to TIG torch body securely. | View Hoses & Pipes → |
| User Manual | English | Complete operating, maintenance, and safety manual. | — |
| Certification / Compliance | Scope | Relevance |
|---|---|---|
| ISO 9001:2015 | Complete manufacturing facility — Valsad, Gujarat | Quality-controlled production, consistent output standards |
| IS Certified | Applicable Indian Standards for welding equipment | Compliance with BIS standards for Indian market |
| MSME Registered | Advanced Power Sources Limited | Registered Indian manufacturer — supports domestic procurement requirements |
| CE Compliance | Available for applicable export models | European conformity — available on request for export buyers |
Yes, the Apollo 400 TIG Welding Machine is ideal for stainless steel, mild steel, and alloy steel welding.
Absolutely. Apollo 400 is designed for continuous industrial and fabrication welding.
Yes, it supports both TIG and MMA (Stick Welding).
Yes, the Apollo 400 is manufactured in an ISO certified facility.
Yes, it is a Made in India TIG Welding Machine.
APS welding is always ready to help you. For Sales Enquiries:Contact: +91 9601 444 111For booking service call:Contact: +91 9601 444 222
We design and manufacture all our products and thus we know the best about our products.
We are able to offer international technology and service at optimum prices.
Our team is regularly trained for updates in service techniques and also are constantly update on knowledge and skill.
We ensure you professionally managed sales and after sales support.
Office & Manufacturing Facility:
Survey No 172/1, Paikee 2, OLD GIDC Gundlav, Valsad, Valsad District, GUJARAT – 396035. INDIA.
