Power Your Single-Phase Equipment from a 3-Phase Supply
Our 3-Phase to Single-Phase Dry-Type Transformer converts common industrial 3-phase voltages such as 208V, 380V, 400V, 415V, 440V, 460V or 480V into stable single-phase output of 110V / 120V / 127V / 220V / 230V / 240V, or any customer-specified voltage. Built with high-permeability silicon steel core and optional 100% copper windings, it is engineered for factories, workshops, commercial buildings, imported machinery, solar/BESS sites and backup power systems across global markets
In many countries, industrial and commercial mains are supplied as 3-phase power (e.g. 400V in Europe/Middle East/Africa/Asia, 415V in UK/Australia/India legacy systems, 480V in North America, 380V in parts of LATAM/Asia). However, a large number of loads—air conditioners, welding machines, ovens, control panels, imported CNC components, lighting, POS systems, medical devices and residential-style appliances—still require single-phase power.
This unit acts as the electrical bridge: it takes 3-phase input across L1/L2/L3 (+N if required) and delivers a clean, regulated single-phase output through optimized winding design, open-delta, Scott-T style or custom winding configurations depending on capacity and balance requirement .
Global voltage compatibility: input 208 / 220 / 230 / 240 / 380 / 400 / 415 / 440 / 460 / 480 / 600 / 660V AC; output 100 / 110 / 120 / 127 / 200 / 208 / 220 / 230 / 240V AC, 50Hz or 60Hz, fully customizable .
Dry-type, low-maintenance: air natural or fan-assisted cooling; suitable for indoor industrial environments; optional IP20 / IP23 / IP54 enclosure .
Electrical isolation option: isolation-type version reduces harmonics, surge coupling and ground-loop interference for sensitive equipment; autotransformer option available for compact, cost-effective projects .
Premium build: high-grade silicon steel laminations, vacuum-impregnated windings, Class F / Class H insulation; copper or aluminum windings optional .
Stable output: voltage accuracy ±1%–3%, low waveform distortion, efficiency typically ≥95%, many models ≥98% .
Protection & monitoring: over-current, over-temperature, short-circuit and surge considerations supported; analog/digital meters, terminal box, earthing terminal as standard or optional .
Compliance & customization: CE, RoHS, ISO 9001; IEC60076 / VDE / GB / JB references available on request; OEM/ODM, private label, drawing-based custom build supported .
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| Parameter | Typical / Custom Range |
| Phase |
3-phase input → 1-phase output |
| Capacity | 3kVA / 5kVA / 10kVA / 20kVA / 30kVA / 50kVA / 100kVA / 150kVA / 200kVA / 300kVA / 500kVA (custom up to 2000kVA on request) |
| Input voltage |
208 / 240 / 380 / 400 / 415 / 440 / 460 / 480 / 600 / 660V AC or customized |
| Output voltage | 110 / 120 / 127 / 208 / 220 / 230 / 240V AC single-phase or customized |
| Frequency | 50Hz / 60Hz dual-compatible |
| Type | Dry-type, isolation or autotransformer |
| Winding material |
100% copper / aluminum optional |
| Insulation class | F (155°C) / H (180°C) optional |
| Efficiency | ≥95%–98% |
| Cooling | AN / AF (natural / forced fan) |
| Enclosure | Open frame, IP20, IP23, IP54 optional |
| Standards | CE, ISO 9001, RoHS; IEC60076 / VDE0550 / IEC439 on request |
Imported machinery adaptation: Japanese / European / US single-phase equipment running in 415V or 480V 3-phase factories .
Workshops & SMEs: single-phase welders, compressors, ovens, pumps fed from 3-phase main.
Commercial buildings: backup panels, elevator control circuits, kitchen equipment, HVAC components.
Solar / BESS / generator sites: converting 3-phase PV-inverter or genset output to single-phase distribution leg .
Medical, lab & telecom: isolation-type versions for cleaner, safer single-phase supply .
Q: Is this a phase converter or just a transformer?
A: It is a 3-phase to 1-phase transformer / converter transformer. It changes both the phase structure and the voltage level, so it is not the same as simply taking one phase from a 3-phase panel. For larger or unbalanced loads, a dedicated transformer avoids overheating and phase imbalance issues .
Q: Can it be used in the USA, EU, Middle East and LATAM?
A: Yes. Because voltages are customized per order, the same product platform can be built for 480V→120/240V (North America), 400V→230V (EU/IEC), 415V→240V (UK/Australia/legacy industrial), or 380V→220V (LATAM/Asia/Africa) .
Q: Should I size it at 100% of my load?
A: For 3-phase to single-phase conversion, we normally recommend selecting 20%–30% headroom above the continuous load, especially for motor starting, welders, compressors or inrush-current equipment, to reduce imbalance stress and extend service life .
Q: Copper or aluminum winding—which should I choose?
A: Copper gives better efficiency, lower loss and longer life; aluminum is lighter and more cost-effective for budget or stationary projects. Both are available from our factory .
Q: Do you support OEM for distributors?
A: Yes. We provide OEM/ODM: custom nameplate, enclosure color, terminal layout, packaging, manuals and CO/CE/ISO documents for your local market .