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    25kV Vacuum Circuit Breaker

    5 out of 5 based on 4 reviews | Write a review
    Vacuum circuit breaker for sale online, with 25kv rated voltage to be the protection and control unit. Rate current of vcb circuit breaker is 630A, 1250A, 2500A, 3150A. Acting to protect and control line is the function of vcb.
    SKU: ATO-VCB-25
    30-day Returns
    Delivery date: 6-12 days

    High voltage vacuum circuit breaker with 25kV rated voltage. Rated short circuit switching current is 50kA, 80kA, 100kA. Advantages of vcb breaker are reliable insulation, no pollution and long time free maintenance.


    • Ideal contact material and shape, ensuring low current carrying value and stable contact resistance.
    • Vacuum circuit breaker with with integrated design of main conductive circuit made of compound isolation material and operating mechanism.
    • VCB circuit breaker with few components and parts, compact and logical structure, assuring more reliable and safer operation.
    • Compact design enables the breaker to be installed within almost all switchgears.
    • Superior cost performance, ideal choice for engineering programs.

    Parameter List: (Parameters can be customized)

    Model ATO-VCB-25
    Rated voltage 25 kV
    Maximum operating voltage 25 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)

    Vacuum circuit breaker inside constructionVacuum circuit breaker external construction

    Schematic Diagram:

    Vacuum circuit breaker schematic diagram


    25KV Vacuum Circuit Breaker Details

    Tips: How to Maintenance Vacuum Circuit Breaker?

    • Insulation.

    This is one of the simplest maintenance techniques. Insulation maintenance applies to the cleaning of all the insulation surfaces. Any soft cloth, such as dry lint-free cloth or dry paper towel can be used to wipe the dust off from the insulation surfaces to ensure it smooth operation.

    If wiping is unable to remove dust well, distilled water or a mild solvent can be used to remove. Once wiped, make sure that all the surfaces have completely dried up before placing the circuit breaker into use.

    • Lubrication.

    Proper lubrication is required periodically to ensure the overall smooth and correct operation of all the components of a vacuum circuit breaker and VCB maintenance. The gap between relubrication depends on the frequency of the circuit breaker used.

    For lubrication, a drop of light machine oil can be used. After lubrication, the circuit breaker needs to be operated several times manually and electrically so that the oil is absorbed into the parts.

    Existing reviews of 25kV Vacuum Circuit Breaker
    Solid 25kV vacuum circuit breaker
    When I bought it, I saw the solid case of the vacuum circuit breaker in the picture. After receiving the goods, it was almost the same as the picture. I was very satisfied. This 25kV vacuum circuit breaker performance is also excellent.
    From: Dozzie | Date: 04/11/2022
    Was this review helpful? Yes No (0/0)
    Working fine
    What I've been looking for is a 25 kV vacuum circuit breaker. I took it out as soon as I received it. I put this vcb breaker in my factory and it's been working fine.
    From: Monzer | Date: 19/07/2022
    Was this review helpful? Yes No (0/0)
    Superb vacuum breaker
    I have been using this vacuum circuit breaker for a month. It works very well. No problems have been found so far. I will recommend this product to other people who need it.
    From: Beeyh | Date: 25/04/2022
    Was this review helpful? Yes No (0/0)
    Strongly recommend to everyone to buy
    This is a very good 25kV vacuum circuit breaker. I bought it through the recommendation of a colleague. I think its quality is very good. I will also recommend it to everyone to buy it.
    From: Mergatroid | Date: 16/01/2022
    Was this review helpful? Yes No (0/0)
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