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ZW7-40.5 Outdoor Vacuum Circuit Breaker - Reliable 40.5kV High Voltage Solutions from China Suppliers & Factory
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ZW7-40.5 Outdoor Vacuum Circuit Breaker.jpg

ZW7-40.5 Outdoor Vacuum Circuit Breaker - Reliable 40.5kV High Voltage Solutions from China Suppliers & Factory

Introducing the ZW7-40.5 Series, a premium outdoor high voltage vacuum circuit breaker designed for 40.5kV, 50Hz three-phase AC systems. As a reliable solution for managing load, overcurrent, and short-circuit situations, this circuit breaker leverages advanced vacuum interruption technology, boasting a remarkable mechanical life of 10,000 operations. Its simplified design ensures long maintenance intervals while providing exceptional resistance to pollution, making it a top choice among China suppliers and factories, Equipped with integrated current transformers that offer 0.2 accuracy and a highly effective condensation controller, the ZW7-40.5 guarantees safe and efficient operation. Available with either spring or electromagnetic mechanisms, this circuit breaker is engineered for frequent usage without the risk of fire or explosion, positioning it as an essential component in high voltage electrical systems. Choose the ZW7-40.5 Series for a superior blend of performance and safety in your applications
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    Product Details

    Technical Specification

    No.

    Item

    Units

    Parameters

    1

    Rated voltage

    KV

    40.5

    2

    Rated insulation level

    Power frequency withstand voltage

    Dry

    95

    Wet

    80

    Lightning impulse withstand voltage (peak)

     

    185

    3

    Rated current

    A

    1250、1600、2000

    4

    Rated short-circuit breaking current

    KA

    20、25、31.5

    5

    Rated operating sequence

     

    O-0.3s-CO-180s-CO

    6

    Rated short-circuit breaking current breaking times

    Times

    12

    7

    Rated short-circuit closed current (peak)

    KA

    50、63、80

    8

    Rated peak withstand current

    9

    Rated short-time withstand current

    KA

    20、25、31.5

    10

    Rated short-circuit duration

    S

    4

    11

    Average opening speed

    m/s

    1.5±0.2

    12

    Average closing speed

    0.7±0.2

    13

    Contact closing bounce duration

    s

    ≤2

    14

    Three phase closing and opening synchronism

    ≤2

    15

    Opening time

    ≤150

    16

    Closing time

    ≤60

    17

    Mechanism life

    Times

    10000

    18

    Rated operating voltage and auxiliary circuit rated voltage

    V

    Dc220、110、24

    Ac220、110、24

    19

    Phase loop DC resistance (without current transformer)

    uΩ

    ≤100

    20

    Permitted accumulate wear-thickness of dynamic and static contact

    mm

    3

    21

    Weight

    kg

    800
    Product Model
    Product Model Diagram
    Product Model Diagram
    Dimension
    Dimension Drawing
    Dimension Drawing
    Frequently Asked Questions
    Q
    What is the rated voltage of this vacuum circuit breaker?
    The rated voltage of this vacuum circuit breaker is 40.5 KV, making it suitable for medium-voltage power distribution systems and industrial applications.
    Q
    What rated current options are available for this circuit breaker?
    This circuit breaker is available in three rated current options: 1250 A, 1600 A, and 2000 A, providing flexibility for different load requirements in power distribution networks.
    Q
    What is the rated short-circuit breaking current of this product?
    The rated short-circuit breaking current is available in 20 KA, 25 KA, and 31.5 KA. The breaker supports up to 12 breaking operations at rated short-circuit current, ensuring reliable fault protection.
    Q
    What are the supported operating voltages for the control and auxiliary circuits?
    The rated operating voltage and auxiliary circuit supports both DC and AC supplies. DC options include 220 V, 110 V, and 24 V, while AC options include 220 V, 110 V, and 24 V, offering broad compatibility with various control systems.
    Q
    What is the mechanical life expectancy of this vacuum circuit breaker?
    The mechanism life of this vacuum circuit breaker is rated at 10,000 operations, ensuring long-term reliability and reduced maintenance costs over its service life.
    Q
    What is the rated operating sequence of this circuit breaker?
    The rated operating sequence is O – 0.3s – CO – 180s – CO. This sequence defines the standard open/close cycle timing, ensuring safe and effective reclosing performance in accordance with international standards.