@60% Duty
@100% Duty
Metal Body
High-frequency switching delivers stable arc, 85%+ efficiency, and less heat than transformer machines.
Works reliably on DG sets and generator-supplied sites — critical for Indian construction projects.
Dust and water-splash resistant — built for outdoor yards, construction sites, and open workshops.
E6013, E7018, E308L/316L, and carbon steel rods — handles everything from sheet repairs to 25mm plate.
The Discover 400 ARC supports a full range of SMAW electrodes — from fine repair work at 1.6mm to heavy structural passes at 5.0mm:
| Input Specifications | |
|---|---|
| Input Voltage | 415 VAC, 3-Phase, 50/60 Hz |
| Voltage Range | 330 VAC – 500 VAC |
| Input KVA @ 400A | 17.8 KVA |
| Input Cable | 4-core 2.5 sqmm, 4 meters |
| Switching Device | IGBT Module |
| Inverter Frequency | 20 kHz Full Bridge |
| Output Specifications | |
| Output Current Range | 10A – 400A |
| Output @ 60% Duty | 400 Amps |
| Output @ 100% Duty | 300 Amps |
| Open Circuit Voltage | 85 VDC (max) |
| Welding Process | SMAW – DC Constant Current |
| Polarity | DC+ / DC− |
| Protection & Insulation | |
| Ingress Protection | IP23 |
| Insulation Class | Class H (180°C) |
| Cooling Method | Forced Air (Fan Cooled) |
| Thermal Protection | Auto Thermal Cutout |
| Mechanical Specifications | |
| Dimensions (L×W×H) | 540 × 310 × 470 mm |
| Weight | 29 kg |
| Body | Full Metal |
| Base | Rubber Foot |
| Lifting | Integrated Handle |
| * Specifications subject to change without notice. Contact APS Welding for latest data sheet. | |
The Discover 400 ARC supports a full range of SMAW electrodes — from fine repair work at 1.6mm to heavy structural passes at 5.0mm:
| Electrode Type | Diameter Range | Material | Typical Application | Recommended Current |
|---|---|---|---|---|
| E6013 | 1.6mm – 3.15mm | Mild Steel | General fabrication, sheet metal, light structural | 40A – 130A |
| E7018 | 2.5mm – 5.0mm | Mild / Structural Steel | Heavy structural, pressure vessels, load-bearing joints | 80A – 220A |
| E308L / E316L | 2.5mm – 4.0mm | Stainless Steel | SS fabrication, food equipment, chemical industry | 70A – 180A |
| Carbon Steel | 3.15mm – 5.0mm | Carbon Steel | Heavy engineering, machinery frames, earth-moving equipment | 120A – 250A |
The Discover 400 ARC is APS Welding’s industrial-grade SMAW (Stick Arc Welding) machine, built for heavy fabrication, structural steel, and continuous-production environments. Powered by a 20 kHz Full Bridge IGBT Module Inverter, it delivers stable DC constant current output with precise arc control — from production lines to construction sites.This is Inverter Based Arc Welding Machine.
Rated at 400 Amps at 60% duty cycle and 300 Amps at 100% continuous duty, the Discover 400 ARC handles electrode sizes from 1.6mm to 5.0mm — covering job material thickness from 1mm to 25mm. Its wide input voltage range of 330–500VAC makes it reliable on DG sets and generator power, not just stable grid supply.
The machine’s full metal body weighs 29kg and carries an IP23 ingress protection rating — resistant to dust and water splash for open-yard and site use. It welds mild steel, stainless steel (E308L/E316L), and carbon steel using standard electrodes including E6013 and E7018.
Manufactured at APS Welding’s ISO 9001:2015 certified facility in Valsad, Gujarat — every Discover 400 ARC is built and tested in-house for consistent output quality and long-term operational reliability.
The Discover 400 ARC is a 3-phase industrial machine — it is not a general-purpose or entry-level welder. Understanding where it excels (and where it doesn’t) helps buyers make the right call.
APS Welding’s Discover Series offers SMAW machines across different output ratings. Here is a quick comparison to help select the right model:
| Specification | Discover 200DX | Discover 400 ARC ★ |
|---|---|---|
| Input Phase | Single Phase (230V) | 3 Phase (415V) |
| Output @ 60% Duty | 200 Amps | 400 Amps |
| Output @ 100% Duty | 130 Amps | 300 Amps |
| Max Electrode Size | 3.15 mm | 5.0 mm |
| Max Job Thickness | 6 mm | 25 mm |
| Weight | 7.2 kg (portable) | 29 kg (industrial) |
| Ingress Protection | IP21 | IP23 |
| Voltage Range | 150V – 300V | 330V – 500V |
| Best For | DIY, light fab, site repair | Heavy industrial production |
The Discover 400 ARC’s combination of 400A output, wide voltage tolerance, and IP23 site protection makes it the preferred stick welder across these industrial sectors:
🏗️ Bridge & Pipeline Construction
🏭 Heavy Engineering & Machinery
🛢️ Pressure Vessel & Boiler Welding
🚧 Infrastructure & Construction Sites
Industrial Maintenance & Repair
🚛 Earth-Moving Equipment Fabricatio
⚙️ Equipment & Component Manufacturing
🏗️ Structural Steel Fabrication
The 330–500V wide input voltage range makes it particularly well-suited for construction sites in India where DG set or generator power is the primary supply — a common challenge for heavy infrastructure projects
Full 400 Amps at 60% duty cycle — handles 5.0mm electrodes and 25mm plate thickness for demanding industrial jobS.
Full 400 Amps at 60% duty cycle — handles 5.0mm electrodes and 25mm plate thickness for demanding industrial jobS.
Rated for dust and water splash resistance — performs in workshops, open yards, and outdoor construction environments.
APS Welding’s certified facility in Valsad, Gujarat — quality-controlled production, Made in India.
Nationwide service network, spare parts availability, and dedicated technical support team.
20kHz full bridge inverter delivers stable arc at 85%+ efficiency — lower power bills and less heat vs transformer-based machines
| Accessory | Model | Specification | Link |
|---|---|---|---|
| Electrode Holder | EH40 | 400A rated, heavy-duty insulated grip | View EH40 → |
| Earthing Clamp | EC40 | 400A rated, strong spring-jaw design | View EC40 → |
| Welding Cable | 35 sqmm | Heavy-duty flexible copper cable for 400A operation | View Cables → |
| 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 |
Discover 400 ARC is a 400 Amp Stick Arc Welding (SMAW) machine designed for heavy fabrication and industrial welding applications.
Yes. The machine is built for heavy-duty fabrication, structural welding, and regular industrial workshop operations.
Discover 400 ARC is suitable for welding mild steel and structural steel materials commonly used in fabrication and industrial work.
The machine supports regular and extended welding operations. For extreme 24×7 high-load usage, duty cycle management is recommended.
Discover 400 ARC is manufactured at APS Welding’s ISO 9001:2015 certified and MSME registered facility. CE compliance is available for applicable export models.
APS Welding provides technical support, spare parts availability, and service assistance for Discover 400 ARC.
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.