The Excellent Enterprises ARC-400 Single Phase MOSFET Inverter Welding Machine is the value 400-amp option in the single-phase ARC range — for fabrication shops and repair contractors that need genuine heavy-duty MMA output for intermittent heavy work without paying for, or always needing, the continuous-duty IGBT platform. It delivers a stable 20–400A DC output on a 230V supply with electrodes up to 6–7mm and a responsive, easy-to-control arc.
Product Overview
The ARC-400 MOSFET pairs high-frequency MOSFET switching with intelligent arc management for responsive manual welding and energy-efficient conversion. It suits structural fabrication, heavy gate/frame work, bridge and pipeline repair and shutdown maintenance where the work is heavy but not continuous at maximum output. (For sustained, continuous max-output welding, see the ARC-400 IGBT, which offers better thermal endurance — both are covered honestly below.)
Key Features
- 20–400A MOSFET inverter output for heavy-duty MMA welding.
- Electrodes up to 6–7mm for thick-section and structural work.
- Responsive high-frequency arc for smooth manual control and good puddle feel.
- Adaptive Arc Force for stability when the arc gap fluctuates in positional/structural welding.
- Automatic Hot Start for clean ignition with larger electrodes.
- Anti-Stick to protect rod and machine.
- Energy-efficient conversion and industrial overheat/overvoltage/overcurrent protection.
Benefits
The ARC-400 MOSFET is the cost-effective way to get 400A single-phase capability for heavy fabrication and repair that isn’t run flat-out continuously. Its responsive arc helps manual welders place clean beads, while inverter efficiency keeps running cost down — a practical heavy-duty workhorse for budget-conscious shops.
Technical Specifications
| Specification | Details |
|---|---|
| Model | ARC-400 MOSFET |
| Technology | MOSFET Inverter |
| Input Voltage | AC 230V ±15% |
| Phase | Single Phase |
| Output Current | 20A – 400A |
| No-Load Voltage | 70V – 80V |
| Duty Cycle | 60% (DATA REQUIRED: confirm rated amperage) |
| Efficiency | 85% |
| Electrode Compatibility | Up to 6.0mm – 7.0mm |
| Process | MMA / Manual Metal Arc (SMAW) |
| Suitable Materials | Carbon Steel, Low-Alloy Steel, Stainless Steel, Cast Iron |
| Protection | Overheat / Overvoltage / Overcurrent / Anti-Stick |
Material & Construction
Compact industrial inverter enclosure with protected panel and forced-air cooling. (DATA REQUIRED: body material, weight, cooling capacity, IP/insulation class. Note: MOSFET designs run hotter at high sustained current — confirm the cooling rating and duty-at-amps for heavy continuous use.)
Performance Advantages
Responsive manual arc control; heavy-duty 400A capacity for thick sections and high deposition; adaptive arc-force stabilisation in positional/structural welding; reliable hot-start ignition with larger electrodes; energy-efficient conversion. For continuous maximum-output duty, the ARC-400 IGBT offers better thermal endurance.
Applications
Structural steel fabrication; heavy gate and frame manufacturing; bridge construction welding; pipeline repair and maintenance; heavy equipment refurbishment; industrial shutdown maintenance; construction-site welding; steel fabrication workshops; OEM industrial repair.
Industries Served
Fabrication workshops · construction & infrastructure · pipeline (repair) · heavy equipment · plant shutdown maintenance · structural steel · OEM repair.
Compatibility
Single-phase 230V (±15%); E6013/E7018 electrodes up to 6–7mm. Pairs with heavy electrode holders, heavy welding cables, electrode drying ovens (for E7018) and PPE. (DATA REQUIRED: minimum supply/breaker rating and DG-set compatibility — important at 400A single-phase draw.)
Buying Considerations
- MOSFET vs IGBT (read this): the MOSFET version is the economical choice for intermittent heavy work; for continuous, sustained maximum-output welding the ARC-400 IGBT offers better thermal endurance and durability. Choose by your duty pattern and budget.
- Supply capacity: a 400A output on single-phase 230V draws very high input current — confirm your line/genset against the rated input current/KVA (DATA REQUIRED).
- Electrode/thickness: 6–7mm rods for thick plate; match rod and amperage to thickness.
- Duty cycle: 60% (confirm rated amperage and thermal behaviour under sustained load).
- What’s included & warranty: confirm before ordering.
Why Choose Excellent Enterprises
ISO 9001:2015-certified, ISI-compliant supplier, 500+ clients since 1997 (29+ years). Genuine, warranty-backed machines, bulk pricing, PAN-India delivery, GST invoicing, OEM/private-label and export support, 30-minute quote response — plus honest guidance on choosing between MOSFET and IGBT.
Maintenance
Clear conductive dust from vents/cooling path (dry, oil-free air); keep airflow unobstructed (especially given MOSFET thermal behaviour at high current); inspect heavy cables, lugs and earth; store dry; replace worn consumables promptly.
Safety Considerations
Suitable helmet, FR clothing, gloves; fume extraction; verified earthing by a qualified electrician given the high input current; isolate before connection changes; follow IEC 60974-1 and site hot-work/permit procedures.
Frequently Asked Questions
What is the ARC-400 MOSFET used for? Heavy-duty single-phase MMA welding — structural fabrication, heavy gate/frame, bridge and pipeline repair, and shutdown maintenance — with electrodes up to 6–7mm on a 230V supply. MOSFET or IGBT for 400 amp? IGBT is generally preferred for continuous heavy duty (better thermal efficiency); the MOSFET version suits intermittent heavy work at lower cost. Choose by duty pattern and budget. ARC-400 MOSFET vs ARC-400 IGBT? MOSFET = economical, intermittent heavy work; IGBT = sustained, continuous-duty, greater durability. Both are 400A, single-phase, 6–7mm electrode. Can my single-phase supply run it? A 400A output draws very high input current — confirm your line/genset against the rated input current/KVA (DATA REQUIRED) before purchase. Which electrodes fit? Up to 6–7mm rods (E6013/E7018) for thick-section and structural welding. Does it have hot start and anti-stick? Yes — Hot Start, Adaptive Arc Force and Anti-Stick for easier ignition, stable arcs and rod protection.
Conclusion & CTA
The ARC-400 MOSFET is the value 400-amp single-phase stick welder for intermittent heavy fabrication — responsive arc, 6–7mm electrode capacity and inverter efficiency — from an ISO 9001:2015 supplier with 29+ years’ experience. For continuous-duty work, compare the ARC-400 IGBT. Request a quote for pricing, MOSFET-vs-IGBT guidance, bulk slabs and PAN-India delivery.
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