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    Picture of 3 kVA Single Phase Isolation Transformer, 208V to 240V
    Picture of 3 kVA Single Phase Isolation Transformer, 208V to 240V
    Picture of 3 kVA Single Phase Isolation Transformer, 208V to 240V
    Picture of 3 kVA Single Phase Isolation Transformer, 208V to 240V
    Picture of 3 kVA Single Phase Isolation Transformer, 208V to 240V
    Picture of 3 kVA Single Phase Isolation Transformer, 208V to 240V
    Picture of 3 kVA Single Phase Isolation Transformer, 208V to 240V

    3 kVA Single Phase Isolation Transformer, 208V to 240V

    1 review(s) | Add your review
    SKU: PH-T-DG3KVA
    $1,036.45
    ● 3kVA isolation transformer, default 208V to 240V step-up; step-down and custom voltages available. ● Full galvanic isolation between primary and secondary sides. ● Flexible voltage selection: 110V / 120V / 208V / 220V / 230V / 240V configurable on both input and output. ● Natural air self-cooling; IP20 encapsulated enclosure for dust and impact protection.
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    ā±ļø Delivery: 10-16 days
    šŸ”™ 30-day Returns
    Overview

    This 3kVA isolation transformer is designed for dependable AC voltage conversion and electrical isolation, commonly used for 208V to 240V step-up applications. It also supports step-down operation and custom voltage configurations, making it adaptable to different power systems. The IP20 encapsulated enclosure protects against dust and mechanical intrusion, while a multi-hole ventilation design with rear cooling fan maintains safe operating temperatures. Cold-rolled oriented silicon steel sheets keep core loss low, and 180ā„ƒ-rated enameled wire ensures insulation integrity through extended continuous operation. Four universal 360Ā° casters add practical mobility for workshop and facility use.

    Specification

    Basics
    Phase Single-phase
    Capacity 3000 VA / 3 kVA
    Weight 50 kg
    Technical Parameters
    Primary Voltage 208V AC (optional: 110V/ 120V/ 220V/ 230V/ 240V)
    Secondary Voltage 240V AC (optional: 110V/ 120V/ 208V/ 220V/ 230V)
    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.
    Details
    3 kVA single-phase isolation transformer feature

    Feature

    • Efficient Cooling System: Designed with ventilation holes and a rear cooling fan, providing effective heat dissipation and maintaining stable operation.
    • High-Temperature Resistant Materials: Uses enameled wire with up to 180Ā°C resistance, ensuring strong insulation and longer service life.
    • Low Loss Core Design: Built with oriented silicon steel sheets, reducing core loss and improving magnetic performance.
    • Real-Time Voltage Monitoring: Equipped with LCD and indicator lights for clear input and output voltage status.
    • Protective Enclosure & Mobility: Features IP20 enclosure protection and 360Ā° universal casters for easy movement and enhanced durability.
    Ā 

    1. Ā 

      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

    Ā 

    Aluminium Wire Transformer Size Copper Wire Transformer Size
    Without Enclosure: a*b*c=192*160*220 (mm) Without Enclosure: a*b*c=180*160*210 (mm)
    Mouting Size: D*E=140*120 (mm) (aperture: 17*8mm) Mouting Size: D*E=130*120 (mm) (aperture: 17*8mm)
    With Enclosure: A*B*C=250*360*420 (mm) With Enclosure: A*B*C=250*360*420 (mm)


    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. Can the voltage be customized beyond the default 208V to 240V configuration?

    Yes. The 208Vā†’240V pairing is the default, but both the primary and secondary voltages are fully customizable. Available options span 110V, 120V, 208V, 220V, 230V, and 240V on each side, supporting a wide range of step-up and step-down configurations. Please confirm your required voltage combination when ordering.

    Q2. Why is galvanic isolation important, and what applications benefit most from it?

    Galvanic isolation completely separates the input and output circuits, preventing ground faults, eliminating electrical noise, and protecting downstream equipment from transient surges on the supply side. It is especially valuable for precision instruments, CNC machinery, laboratory equipment, broadcasting systems, and any application where power quality and circuit safety are priorities.

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    1 review(s)
    5.0 1
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    Sandro | 11/9/2026 2:01 AM
    Solid 3kVA Isolation Transformer for the Shop
    Bought this 3kVA single phase isolation transformer for my shop. Works perfectly converting 208V to 240V for my equipment. Very quiet operation (under 35dB) and stays cool under load. The 360° casters make moving this 50kg unit around easy, and the LCD display gives clear real-time voltage readouts. Heavy-duty build and reliable isolation protection. Highly recommend!
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