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    4000VA Toroidal Transformer, 110V AC to 220V/35-0-35V

    5 out of 5 based on 1 reviews | Write a review
    4000W toroidal transformer works at single phase 50Hz/ 60Hz circuit system, can step up 110V AC to 220V AC or step down 110V to 35-0-35V AC output. It features high efficiency, lower loss, excellent voltage regulation, smaller size, light weight and low temperature rise, is widely applied to the small adapter, lighting control circuit, air-conditioning equipment control circuit, medical equipment, monitoring equipment, automation equipment control circuit.
    SKU: ATO-T-C4000VA
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    Delivery date: 6-12 days

    Single phase dry-type toroidal transformer power supply with 4000VA (4000W) high power capacity, all copper design,  primary voltage of 110V AC and secondary voltage of 220V AC, 2x35V (35-0-35 volt) double outputs are available. Twin secondary windings may be connected in series, parallel or used independently.

    Advantages of ATO Toroidal Transformer

    1. High Efficiency: Winding matches core perfectly, which makes the transformer more efficiency.

    2. Long Service Life: With high quality materials and manufacturing technology, the transformer can be used for 30 years.

    3. Less Noise: The core is seamlessly rolled and the winding is set evenly over it, which makes the transformer quiet when it is working.

    4. Less Radiation: Toroidal structure and winding technology reduce electromagnetic radiation.

    5. Low Temperature Rise: Even it is overloaded at 120%, temperature rise will be less than 70℃.

    4000VA Toroidal Transformer Specifications

    Model ATO-C4000VA
    Phase Single phase
    Power 4000VA (4000W)
    Primary Voltage 110V AC (Optional: 110V, 120V, 220V, 230V, 240V)
    Secondary Voltage 220V AC (Optional: 12V, 24V, 48V, 110V, 220V, 2x6V, 2x12V, 2x15V, 2x24V, 2x30V, 2x35V, 2x40V, 2x50V, can be customized)
    Secondary Current 18.18A
    No. of Inputs 1 input
    No. of Outputs

    1 output (4-wire 2 outputs are available)

    Note: For the transformer with 2 outputs 4-wire, each output provides the same voltage and current level, the sum of 2 output power capacities is equal to the total capacity.

    Frequency 50Hz/60Hz
    Winding Material Copper Wire
    Coil Structure Toroidal
    Efficiency 90%-96%
    No-load Loss <7.04W
    Input Wire UL1015-18
    Output Wire UL1015-16
    Voltage Strength DC2500V
    Insulation Impedance ≥500MΩ
    Cooling Method Natural air cooling
    Temperature +40℃
    Certification CE, RoHS, ISO, UL
    Warranty 12 months
    External Diameter 240mm
    Height 95mm
    Pedestal 240*240mm
    Mounting Hole Distance 240*240mm
    Weight 31kg
    Package Included 1*Toroidal transformer + 1*Accesorries sets (Nut, Shim, Metal disk, Rubber gaske, Pedestal, Screw)

    Toroidal Transformer Accessories

    toroidal transformer accessories

    Toroidal Transformer Mounting Methods

    toroidal transformer mounting method

    Toroidal Transformer Internal Structure

    toroidal transformer internal structure


    Tips: The vibration of the toroidal transformer is very large. What might be the cause?

    1. The toroidal transformer is severely overloaded.
    2. The input voltage exceeds the rated value by more than 10%.
    3. The installation and fixing of the transformer is not firm.
    4. There are problems with the design and production process of the transformer itself.
    5. The transformer cannot match the load parameters.

    Compared with ordinary transformers, toroidal transformers have great advantages in efficiency, temperature rise, cost, anti-interference, and longevity. This video will showcase its function and benefits.

    Existing reviews of 4000VA Toroidal Transformer, 110V AC to 220V/35-0-35V
    Can you tell me the transformer size?
    Thank you for your reply.
    Can you tell me the transformer size as I am designing a plc cabinet?
    Please do not produce it yet, as the cost must be approved by people in my company.
    From: boris | Date: 25/07/2023
    Was this review helpful? Yes No (0/0)
    ATO Responded
    The external dimensions of the 4000VA toroidal transformer are expected to be: outer diameter 300mm* height 130mm.
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