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    Picture of 4 kVA Single Phase Isolation Transformer, 220V to 110V
    Picture of 4 kVA Single Phase Isolation Transformer, 220V to 110V
    Picture of 4 kVA Single Phase Isolation Transformer, 220V to 110V
    Picture of 4 kVA Single Phase Isolation Transformer, 220V to 110V
    Picture of 4 kVA Single Phase Isolation Transformer, 220V to 110V
    Picture of 4 kVA Single Phase Isolation Transformer, 220V to 110V
    Picture of 4 kVA Single Phase Isolation Transformer, 220V to 110V

    4 kVA Single Phase Isolation Transformer, 220V to 110V

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    SKU: PH-T-DG4KVA
    $1,135.24
    ● 4 kVA single-phase isolation transformer, steps down 220V to 110V or steps up 110V to 220V; other voltages customizable. ● Supports a wide range of voltage configurations: 110V / 120V / 208V / 220V / 230V / 240V on both primary and secondary sides. ● Choice of enclosure type (IP20) or open type; aluminum or copper enameled wire winding available. ● Zero waveform distortion; complete galvanic isolation between primary and secondary circuits.
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    Overview

    Powerhome's 4 kVA single-phase isolation transformer is commonly used for 220V to 110V step-down or 110V to 220V step-up applications. It also supports custom voltage configurations, offering flexibility for different power systems. Built with a dry-type structure, the transformer is available in enclosed (IP20) or open type, meeting various installation requirements. It provides complete electrical isolation between primary and secondary circuits, ensuring safe, interference-free operation. With reliable performance and low energy loss, this isolation transformer is widely used in industrial equipment, construction, CNC machinery, and power distribution systems.

    4 kVA single-phase isolation transformer feature

    Feature

    • Multiple Structural Choices: Our isolation transformer is available in an IP20 enclosure or open type, allowing flexible installation based on environmental requirements.
    • Safe Electrical Isolation: The transformer provides complete primary-to-secondary isolation, protecting equipment and reducing electrical interference.
    • Wide Frequency Compatibility: Operates on 50Hz and 60Hz systems, suitable for global industrial and commercial use.
    • Optional Winding Materials: Offers enameled copper or aluminum windings, balancing efficiency and cost.
     

    1. Details

      1. Power indicator
      2. Over-temperature indicator
      3. Output voltage digital display screen
    Single-phase isolation transformer details

    Single-phase Isolation Transformer Schematic Diagram

    0.5kVA to 10kVA single-phase isolation transformer schematic diagram

    Single-phase Isolation Transformer Dimension

    Single-phase isolation transformer dimension

     

    Aluminium Wire Transformer Size Copper Wire Transformer Size
    Without Enclosure: a*b*c=210*230*230 (mm) Without Enclosure: a*b*c=192*210*220 (mm)
    Mouting Size: D*E=150*170 (mm) (aperture: 18*8mm) Mouting Size: D*E=140*160 (mm) (aperture: 17*8mm)
    With Enclosure: A*B*C=300*440*500 (mm) With Enclosure: A*B*C=300*440*500 (mm)
    Specs
    Basics
    Phase Single-phase
    Capacity 4000 VA / 4 kVA
    Weight 50 kg
    Technical Parameters
    Primary Voltage 220V AC (optional: 110V/ 120V/ 208V/ 230V/ 240V)
    Secondary Voltage 110V AC (optional: 120V/ 208V/ 220V/ 230V/ 240V)
    Frequency 50Hz / 60Hz
    Winding Material Aluminium / Copper wire (Optional)
    Work Efficiency ā‰„95%
    Insulation Resistance ā‰„50 MĪ©
    Electrical Strength 2000V AC / 1 min
    Noise ā‰¤35dB (1 meter)
    Insulation Grade Grade B (130ā„ƒ) / Grade F (155ā„ƒ) / Grade H (180ā„ƒ)
    Induced Overvoltage Withstand Test 125Hz / 800V / min
    Impedance Voltage About 6%
    Total Losses 10%
    Cooling Mode Natural or air cooling
    Overload Capacity Allow more than 1.2 times the rated load to work for up to 1 hour
    Enclosure Protection Grade IP20
    Certificate CE, ISO
    Warranty 12 months
    Working Environment
    Temperature -15ā„ƒ ~ +45ā„ƒ

    Note:

    1. The transformer can only convert voltage, and CANNOT convert frequency.
    2. The transformer CANNOT convert 1-phase voltage to 3-phase voltage.
    3. Support voltage customization, various specifications customization.
    Application
    Single-phase isolation transformer for industrial equipment

    Industrial Equipment

    Single-phase isolation transformer for factory and industrial parks

    Factory & Industrial Parks

    Single-phase isolation transformer for machine tools and equipment

    Machine Tools & Equipment

    Single-phase isolation transformer for communication equipment

    Communication Equipment

    FAQ

    Q1. What is the difference between the enclosure type and open type options?

    The enclosure type (IP20) features a protective housing that shields internal components from dust and accidental contact, making it suitable for general workshop and industrial environments. The open type omits the outer casing, reducing cost and weight, and is intended for installations where the transformer will be housed within an existing cabinet or enclosure. Both versions offer the same electrical performance and voltage customization options.

    Q2. Which winding material should I choose ā€” aluminum or copper?

    Copper enameled wire provides higher electrical conductivity, better thermal performance under heavy or continuous loads, and greater long-term durability. Aluminum wire is a cost-effective alternative that meets standard performance requirements for moderate-duty applications. For high-demand industrial environments ā€” such as CNC machine tools or mining operations ā€” copper winding is generally recommended.

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