Best 380V to 220V Transformers for 3-Phase Systems
Choosing an efficient transformer to convert 380V three-phase power to 220V can improve performance for laser machines, welding equipment, and industrial tools. This guide reviews five well-suited options, highlighting capacity, installation considerations, and long-term reliability. Each product is evaluated for stability, ease of use, and suitability for continuous operation in demanding environments.
| Product | Brand | Output | Power | Notable Feature |
|---|---|---|---|---|
| 10KW Transformer 3-Phase AC 220V to 380V Power Converter | WTTTOOLS | 380V | 10 kW | Electronic display, user-friendly controls |
| Transformer 380V to 220V 2KW Three-Phase Dry-Type | HOJYBJQU | 220V | 2 kW | Dry-type, compact form |
| LYXC 10Kw Transformer Converter 3-Phase 220V to 380V | LYXC | 380V | 10 kW | Includes voltage display, power light, air switch |
| Control Transformer BK-300VA 380V/220V to 36V/24V/110V | LVSEDTAL | Includes multiple secondary voltages | 300 VA | Compact, long service life |
| LVSEDTAL JBK3-400VA Machine Tool Transformer 380V 220V to 110V/24V/12V | LVSEDTAL | Multiple low voltages | 400 VA | Full power copper windings |
Introduction: This article highlights five transformers that address common 380V to 220V conversion needs in American industrial and workshop settings. It emphasizes three-phase compatibility, durability, and practical features that support safe, stable operation in environments with ongoing equipment use. Each product section below provides a concise overview, key specs, and practical considerations to help readers compare options quickly.
10KW 3-Phase 220V To 380V Power Converter

The WTTTOOLS 10KW transformer converts 220V three-phase input to 380V output, meeting mid-range industrial needs. It features a robust chassis with a 470mm x 370mm x 360mm footprint and a weight near 50 kg, suitable for fixed installation in machine rooms or racks. An electronic display provides real-time readouts for voltage and load, aiding operators in monitoring performance. The unit emphasizes stable operation and efficiency, designed for applications such as laser systems or welding equipment that require reliable 380V supply from 220V sources.
Key considerations include ensuring proper three-phase input wiring and adequate ventilation. The unit’s 10 kW rating supports substantial load, but thermal management remains important at higher duty cycles. The product’s size and weight mean installation planning should account for mounting and clearance around vents.
Transformer 380V To 220V 2KW Dry-Type Three-Phase

The HOJYBJQU dry-type transformer offers a compact 2 kW solution for converting 380V to 220V in three-phase systems. Dry-type construction reduces cooling requirements and may simplify installation in dry indoor environments. This option is well-suited for smaller workshops or machine tools that demand a modest voltage step-down without bulky cooling equipment. Availability in 3-phase configurations can help maintain balanced loads across phases, contributing to stabilized performance for compatible devices.
When considering this model, evaluate whether 2 kW suffices for peak load conditions and whether the installation space accommodates the unit’s dimensions. Dry-type transformers often operate quietly, but airflow remains a factor for long-term reliability and temperature control.
LYXC 10Kw Transformer Converter 3-Phase 220V To 380V

The LYXC 10 kW transformer provides robust 3-phase conversion from 220V to 380V with a sturdy build suitable for continuous operation in production environments. The unit advertises a dimension of 420 x 320 x 380 mm and a weight around 54 kg, aligning with fixed installations in controlled spaces. A voltage display, power indicator, and an air switch add straightforward monitoring and control, helping operators verify proper voltage levels and protect equipment from faults.
Practical considerations include the need for proper three-phase wiring practices and thermal management under full load. The integrated display aids maintenance personnel by delivering at-a-glance information, which can shorten troubleshooting times during shifts with high equipment utilization.
LVSEDTAL BK-300VA 380V/220V To 36V/24V/110V AC Transformer

The BK-300VA control transformer from LVSEDTAL transitions 380V/220V primary voltages to multiple secondary levels, including 36V, 24V, and 110V. With compact dimensions and a long service life, this unit is well-suited for machine tool control panels and control circuits that require several low-voltage rails. The single device can simplify panel layouts by consolidating several secondary supplies into one transformer, reducing wiring complexity and potential fault points.
Engineers should confirm that the combined load on the secondary voltages remains within VA ratings and that cooling is adequate for extended operation. The multiphase or multi-rail capability can simplify installation in legacy systems requiring simultaneous control voltages.
LVSEDTAL JBK3-400VA 380V To 110V/24V/12V Machine Tool Transformer

The LVSEDTAL JBK3-400VA model targets machine tool environments needing a robust mix of lower secondary voltages derived from a 380V/220V primary. The device provides multiple secondary outputs suitable for control circuits, sensors, and auxiliary equipment, leveraging copper windings for improved efficiency and thermal performance. This transformer emphasizes compactness and reliability, making it a practical choice for control panels and tool rooms that require dependable step-down functionality.
When selecting this unit, assess whether the combined secondary load remains within the VA rating and whether the compact form factor fits the control cabinet space. Copper winding construction generally supports better heat dissipation and longevity in demanding usage patterns.
RCTCBRZVTW BK-50W 380V/220V To 12V/24V 110V Transformer

The BK-50W model from RCTCBRZVTW delivers stable step-down conversions from 380V/220V to multiple low voltages, including 12V and 24V. Low wattage and compact construction make it a sensible choice for instrument panels, control loops, and auxiliary power within machine tools or automation equipment. The product emphasizes long-term stability and straightforward maintenance, supporting reliable operation in environments with frequent cycling or standby modes.
Consider the specific low-voltage needs of the system and ensure that the transformer’s VA rating aligns with the total secondary load. Easy installation and maintenance features can reduce downtime during routine checks or component replacements.
Buying Guide: Key Considerations When Selecting a 380V To 220V Transformer
- Voltage and phase compatibility: Ensure the transformer supports 3-phase input at 380V and delivers a 220V output, with the appropriate VA or kW rating for your load.
- Power rating and duty cycle: Select a rating that matches peak and continuous loads. Higher duty cycles demand better cooling and robust construction.
- Wiring and mounting: Consider installation space, enclosure type, and mounting options. Dry-type units may simplify interior setups, while oil-immersed types offer different cooling characteristics.
- Voltage monitoring: Models with built-in displays or indicators help monitor voltage levels, load balance, and fault conditions, aiding preventive maintenance.
- Secondary voltages: Some units provide multiple low-voltage outputs (e.g., 12V, 24V, 110V). Confirm these match device requirements and minimize multi-transformer clutter.
- Thermal management: Adequate ventilation, heat sinking, and ambient temperature ratings impact longevity and reliability, especially under continuous operation.
- Durability and warranty: Look for copper windings, durable enclosures, and manufacturer warranties that reflect long-term confidence in performance.
- Safety considerations: Ensure proper grounding, overcurrent protection, and compliance with local electrical codes. Proper isolation and labeling reduce risk during maintenance.
- Installation expertise: Depending on the application, professional electrical installation may be advisable to ensure correct phase balance and safe operation.