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    40kV Vacuum Circuit Breaker, 1250A, 50Hz

    ATO vacuum circuit breaker indoor high voltage vacuurn circuit breaker is rated voltage 40 kV, three-phase ac 50Hz systern of indoor device. Rated current 1250A, 1600A, 2000A for you choose, mechanical life can reach 10000. Opening time is 30ms~60ms, closing time is 50ms~100ms.
    SKU: ATO-VCB-40kV
    Free Shipping Worldwide
    Delivery date: 6-12 days

    ATO 40kV vacuum circuit breaker with 450kg rated short circuit breaking current 20kA, 25kA, 31.5kA. Rated peak withstand current 50kA, 63kA, 80kA. Total breaking time 0.1S, breaking current 400.


    • ATO 40.5kV vacuum circuit breaker applicable to industrial and mnining enterprises, power plants, substations andother places, used in high voltage motor, transformer, capacitor device control and protection.
    • No pollution, no fire and explosion danger.
    • Long life of electric machinery, electrical life 6000 tirnes; Little repair in the operation, and almost no maintenance; can be frequent operation.


    Model ATO ZN23-40.5
    Rated voltage 40.5kV
    Rated frequency 50Hz
    Rated insulation level Rate lighting impulse withstand voltage (peak) 185kV
    Short-time power frequency withstand voltage  Wet test 80kV
    Dry test 90kV
    Rated current 1250A, 1600A, 2000A
    Weight 450kg
    Rated short circuit breaking current 20kA, 25kA, 31.5kA
    Rated peak withstand current 50kA, 63kA, 80kA
    Rated short time withstand current (effective value) 20kA, 25kA, 31.5kA
    Total breaking time 0.1S
    Rated operations of short circuit current breaking times 20
    Rated short-circuit duration 4S
    Rated operating sequence O-0.3s-CO-180s-CO
    Mechanical life 10000
    Breaking current 400
    Opening time 30ms~60ms
    Closing time 50ms~100ms
    Accumulative allowable wear thickness of dynamic and static contacts  3mm

    Dimensions (Unit: mm)


     Tips: What information should you pay attention to when ordering?

    1. Vacuurn circuit breaker's name, model, main technical data and order quantity.
    2. Vacuurn circuit breaker's rated voltage and rated current and rated short-circuit breaking current, vacuurn circuit breaker's operation mechanism mode and control voltage.
    3. Spare parts narne and quantity, rated voltage of tripping and closing coil; Other questions or special requirements please contact with manufacturer.
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