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    2 kVA Isolation Transformer, Single Phase, 240V to 110V

    5 out of 5 based on 4 reviews | Write a review
    Dry type single phase isolation transformer with 2 kVA power capacity, 50/60 Hz rated, wide range of primary and secondary voltage for selection. 240V to 110V, 208V to 120V, 110V to 230V and more isolation transformer for sale, optional enameled copper wire or aluminum wire.
    30-day Returns
    Delivery date: 10-20 days

    2 kVA power rating isolation transformer with good price, steps down single phase voltage 240 volt to 110 volt, steps up 110 volt to 240 volt transformer is available, IP20 protection grade, low core loss with maximum efficiency and efficiency up to 95% reduces operating cost by 30%.
    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-DG2kVA
    • Capacity: 2kVA
    • Phase: Single phase
    • Winding Material: Aluminum/Copper wire (Optional)
    • Work Efficiency: ≥95%
    • Primary Voltage: 240V AC (optional: 110V/ 120V/ 208V/ 220V/ 230V)
    • Secondary Voltage: 120V AC (optional: 110V/ 208V/ 220V/ 230V/ 240V)
    • Weight: 37 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: Causes leading to the burnout of isolation transformer

    1. There's no fuse on the high and low voltage side of the step up & step down isolation transformer. Some isolation transformers may have equipped with fuse switch or horn fuse, but the fuse is generally replaced by the aluminum or copper wire, which makes the fuse unable to fuse normally and thereof causes the burnout of transformer when low-voltage short circuit or overload.
    2. The high and low voltage fuses of isolation transformers are not properly configured. The fuse on the transformer is generally over configured, so when the isolation transformer is seriously overloaded, the transformer is burnt.
    3. Oil leakage is the most common external abnormal phenomenon of isolation transformer. The transformer is filled with oil, and all joints are equipped with plastic beads and rubber pads to prevent oil leakage. After running for a long time, some plastic beads or rubber pads in the transformer would be aging and cracking and cause the oil leakage, as a result, the insulation will be dampened and its performance reduces, thus leading to discharged short circuit and burning the transformer.
    4. Most of the high and low voltage wires of the 2 kVA isolation transformer are introduced by overhead wires. As the lightning arresters are not timely installed or 10 kV lightning arrester is not installed, the transformer is burned out due to lightning strike.
    5. Some isolation transformers are not configured with primary protection, or they have been configured with primary protection, but the action and reliability of the primary protection are rather low, some even can't act at all.


    1-phase isolation transformer dimension

    Aluminium Wire Transformer Size

    Without Enclosure: a*b*c=192*160*220mm

    Mouting Size: D*E=140*120mm (aperture: 17*8mm)

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

    Copper Wire Transformer Size

    Without Enclosure: a*b*c=180*160*210mm

    Mouting Size: D*E=130*120mm (aperture: 17*8mm)

    With Enclosure: A*B*C=250*360*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 2 kVA Isolation Transformer, Single Phase, 240V to 110V
    Works great
    This isolation transformer is the perfect solution. I plugged it into my GFCI protected circuit, then plugged the fence charger into the isolation transformer. The fence charger now works as expected and other appliances on that circuit still have GFCI protection. This has worked flawlessly.
    From: Cboh | Date: 26/05/2022
    Was this review helpful? Yes No (0/0)
    Is there any need for concern?
    1. The nameplate has environmental temperature range of -20 to approximately 40degrees C.
    2. And depending on whether the nameplate or the data sheet is correct it can sustain either 180 or 155 degrees C.
    3. Depending if it is class H or F insulation.
    4. I guess there is concern that it is already at 50C and running 2 to 3 AMP. at no load.
    From: Cynthia | Date: 25/05/2022
    Was this review helpful? Yes No (0/0)
    ATO Responded
    The transformer is about 50 degrees Celsius with no load, and the primary current is 2 or 3 A, which is normal, no problem.
    When the transformer is running, there will be a temperature rise. When the internal temperature reaches above 80 degrees, the fan will automatically turn on to dissipate heat. The working temperature -20 degrees to 40 degrees is only the external ambient temperature. When using the transformer, you should be noted to ventilation and heat dissipation, and it should not be used at full load.
    Can you please provide a formal quote for the isolation transformer?
    Can you please provide a formal quote for the isolation transformer? So we can generate purchase orders accordingly.
    From: Jmccoy | Date: 09/01/2022
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Yes, sure. Just indicate your detailed delivery address and contact info (Name+Phone).
    2kVA isolation transformer is exactly what I wanted
    As an electrical engineer, I knew exactly what to expect and this 2kVA 1-phase isolation transformer delivered. Aluminum wire winding of the transformer is enough for me, used to step down 240V to 110V. It works great for my electrical trouble shooting!
    From: Cranie | Date: 10/11/2020
    Was this review helpful? Yes No (0/0)
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