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    800 VA Isolation Transformer, Single Phase, 110V to 240V

    5 out of 5 based on 4 reviews | Write a review
    800 VA single phase isolation transformer for sale, designed to step up 110 volt to 240 volt, step down 240 volt to 110 volt version is available, other voltage can be customizable, provides increased reliability and 95% high working efficiency.
    SKU: ATO-T-DG800VA
    30-day Returns
    Delivery date: 10-20 days

    1-phase isolation transformer is dry type air self cooling transformer, 800 VA power rating, available in the circuit of AC 50Hz/ 60Hz and convert primary voltage 110V to secondary voltage 240V, IP20 protection class, H insulation class.
    Isolation transformers serve as secure power sources and are commonly employed in machine repair and maintenance to provide protection, prevent damage from lightning, and filter out electrical disturbances. Here is a demonstration video of a single phase isolation transformer.


    Single phase isolation transformer has a reasonable design, is safe and reliable, and has no waveform distortion, completely insulates the electrical between the primary and secondary sides and isolates the circuit. It is widely used in transportation, construction sites, printing, CNC machine tools, docks, precision equipment, industrial mining enterprises and tunnels for power transmission and distribution to solve voltage conversion problems.

    Basic Specifications

    • Model: ATO-DG800VA
    • Capacity: 800 VA
    • Phase: Single phase
    • Winding Material: Aluminum/Copper wire (Optional)
    • Frequency: 50Hz/60Hz
    • Work Efficiency: ≥95%
    • Primary Voltage: 110V AC (Optional: 120V/ 208V/ 220V/ 230V/ 240V)
    • Secondary Voltage: 240V AC (Optional: 110V/ 208V/ 120V/ 220V/ 230V)
    • Weight: 26 kg

    Technical Specifications

    • Cooling Mode: Natural or air cooling
    • Insulation Resistance: ≥50 MΩ
    • Electrical Strength: 2000V AC/1 min
    • Noise: ≤35dB (1 meter)
    • Insulation Grade: Grade B (130℃), Grade F (155℃), Grade H (180℃)
    • Overload Capacity: Allow more than 1.2 times rated load to work for up to 1 hour
    • Induced Overvoltage Withstand Test: 125Hz/800V/min
    • Impedance Voltage: About 6%
    • Total Losses: 10%
    • Certification: CE, ISO
    • Temperature: -15℃~+45℃
    • Enclosure Protection Grade: IP20
    • Warranty: 12 months


    • Heat dissipation holes and fans: The enclosure is a multi-hole design, the back of the transformer installed cooling fan, can be strong and effective heat dissipation, reduce the temperature of the machine, to better protect the internal components.
    • Two-color indicator: Input and output using LCD digital display meter, equipped with indicators to accurately display the voltage when working state.
    • High temperature resistant enameled wire: High temperature resistance up to 180℃, good insulation and not easy to aging, prolong the service life of the machine.
    • Oriented silicon steel sheet: Cold rolled oriented silicon steel sheet is used, which has the advantages of good heat dissipation coefficient, low core loss and good magnetization characteristics.
    • Long-term continuous work: With a wide range of applicable loads, can withstand transient overload, can work continuously for a long time.
    • Universal casters: Isolation transformer with four universal wheels, easy to move, can rotate 360 degrees, more energy-saving when pushing.
    • Enclosure: With strong enclosure to effectively prevent dust and protect the internal transformer.


    Schematic Diagram
    800 VA-15 kVA single phase isolation transformer schematic diagram


    Single phase isolation transformer details

    Tips: Functions of 800 VA Isolation Transformer

    1. Anti-interference effect: This 800 VA isolation transformer can prevent the transmission of some harmonic waves after a Y/△ wiring connection.
    2. Impedance conversion effect: Increase the system impedance, thus making it easy to cooperate with the protective device.
    3. Stabilize the system voltage: When starting a heavy load equipment, the transformer helps reduce the impact on the system voltage.
    4. Prevent system grounding: When a single-phase grounding occurs on the load side of the isolation transformer, it prevents the single-phase grounding from happening to the whole system (upstream parts of the isolation transformer).
    5. Reduce the short-circuit current: When there's a short-circuit at the load side, it restricts the short-circuit current of the system.



    1-phase isolation transformer dimension

    Aluminium Wire Transformer Size

    Without Enclosure: a*b*c=150*160*180mm

    Mouting Size: D*E=120*115mm (aperture: 15*8mm)

    With Enclosure: A*B*C=250*360*420mm

    Copper Wire Transformer Size

    Without Enclosure: a*b*c=132*140*150mm

    Mouting Size: D*E=100*110mm (aperture: 12*7mm)

    With Enclosure: A*B*C=200*320*420m


    360 Days warranty

    Thank you for buying industrial automation products on, all products sold by ATO and the partner cover a 360-days-warranty, effective from the date of receiving the products.

    What is covered?

    ATO is responsible for providing free spare parts, free technical support to assist the customer to repair the defective products until the problem is solved.

    What is not covered?

    • Product purchased from anyone other than ATO store or a ATO authorized reseller.
    • Expendable parts.
    • Routine cleaning or normal cosmetic and mechanical wear.
    • Damage from misuse, abuse or neglect.
    • Damage from use of parts other than ATO approved.
    • Damage from use outside the product’s usage or storage parameters.
    • Damage from use of parts not sold by ATO.
    • Damage from modification or incorporation into other products.
    • Damage from repair or replacement of warranted parts by a service provider other than a ATO authorized service provider.
    • Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
    Existing reviews of 800 VA Isolation Transformer, Single Phase, 110V to 240V
    Delivery date of 800VA isolation transformer
    I need an approximate delivery date for 800VA isolation transformer.
    From: Darien | Date: 28/12/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Approx 10-12 days after payment is made.
    What is the instantaneous overload tolerance of the 3-phase isolation transformer?
    What is the momentary overload tolerance of your 3 phase isolation transformers before the core begins to saturate?
    From: Annac | Date: 06/12/2021
    Was this review helpful? Yes No (0/0)
    ATO Responded
    It depends on the loading time.
    If it is within 30 minutes, the overload capacity can reach 1.2 times the capacity.
    And if it is within 10 seconds, the overload capacity can reach 3-5 times the capacity.
    Have just ordered another one of this 800 VA single phase isolation transformer for my office
    Have just ordered another one of this 800 VA single phase isolation transformer for my office here in Germany, loving the one used for the entertainment center! So far, works as promised...
    From: Adam Trionfo | Date: 27/11/2018
    Was this review helpful? Yes No (0/0)
    Great value
    This single phase isolation transformer tests fine and it isolates the mains well, just what I needed.
    From: Marvin | Date: 04/07/2018
    Was this review helpful? Yes No (0/0)
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