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    40kV Vacuum Circuit Breaker, 1250A, 50Hz

    5 out of 5 based on 3 reviews | Write a review
    Lower cost vacuum circuit breaker with 40kv rated voltage for sale online. Indoor vacuum circuit breaker has a switching capacity capable of handling the loads occurring at start-up and shutdown. Opening time is 30ms~60ms, closing time is 50ms~100ms. Acting to protect and control line is the function of vcb.
    SKU: ATO-VCB-40
    30-day Returns
    Delivery date: 6-12 days

    VCB circuit breaker with 40kv for sale. The entire structure of vacuum circuit breaker presents the integrated installation off-switch body and operating mechanism. VCB breaker price is affordable and suit for engineering programs.


    • 40.5kV vacuum circuit breaker with Ideal contact material and shape, ensuring low current carrying value and stable contact resistance.
    • Integrated design of main conductive circuit made of compound isolation material and operating mechanism.
    • Few components and parts, compact and logical structure, assuring more reliable and safer operation.
    • VCB breaker adopts the composite insulation structure, with high insulation level,no pollution or explosion danger.
    • Compact design enables the breaker to be installed within almost all switchgears.
    • Superior cost performance, vacuum circuit breaker is the ideal choice for engineering programs.

    Specification: (Parameters can be customized)

    Model ATO-VCB-40
    Rated voltage 40 kV
    Maximum operating voltage 40 kV
    Rated current 630A/1000A/1250A 1250A/1600A/2000A/2500A 1250A/1600A/2000A/3150A 2000A/2500A/3150A
    Rated short circuit breaking current 20kA/25kA 31.5kA 40kA 50kA
    Rated short circuit closing current 50kA/63kA 80kA 100kA 125kA
    Rated peak withstand current 50kA/63kA 80kA 100kA 125kA
    4S Rated short-time withstand current 20kA/25kA 31.5kA 40kA 50kA
    Rated insulation level power frequency withstand voltage(rated open circuit before and later): 42 kV
    impulse withstand voltage(rated open circuit before and later): 75 kV
    Mechanical life 20000 times
    Rated closing voltage of operating mechanism (DC) 110 V, 220 V
    Rated switching voltage of operating mechanism (DC) 110 V, 220 V
    Contactor torque 11±1
    Exceed range(the compress length of contact spring) 4±0.5
    Max.bouncing duration ≤ 2
    Average opening speed ≤ 0.05
    Average closing speed ≤ 0.08
    Opening time ≤ 50
    Closing time ≤ 100
    Accumulative allowable wear thickness of dynamic and static contacts  3 mm
    Certification CE
    Warranty 12 months

    Dimensions: (Unit: mm)

    deSchematic Diagram:

    Vacuum circuit breaker schematic diagram


    40 KV Vacuum Circuit Breaker Details

    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.
    Existing reviews of 40kV Vacuum Circuit Breaker, 1250A, 50Hz
    Compact structure and excellent performance
    On the recommendation of my friend, I tried to buy the vacuum circuit breaker in ATO. The 40kV vacuum circuit breaker worked out better than I expected. The structure is very compact, almost identical to the picture. The working performance is excellent.
    From: Eambay | Date: 01/11/2022
    Was this review helpful? Yes No (0/0)
    Affordable 40 kV vacuum circuit breaker
    This 40 kV vacuum circuit breaker is of good construction. The price is also very affordable. I want this vacuum circuit breaker to work for a long time.
    From: Barrel | Date: 11/08/2022
    Was this review helpful? Yes No (0/0)
    40kV breaker works very well
    I've been using this 40kV vacuum circuit breaker for a month. This machine works very well. I'm very pleased with it. I would buy it again if I needed another one.
    From: Beahn | Date: 28/03/2022
    Was this review helpful? Yes No (0/0)
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