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ZW39 Outdoor HV AC Vacuum Circuit Breaker

ZW39 Vacuum Circuit Breaker is an eco-friendly outdoor high-voltage AC switching equipment featuring strong environmental adaptability, high reliability, and maintenance-free operation. Configurable with internal or external CT per user requirements. Suitable for high-voltage power transmission and distribution applications including substations, distribution networks, and railways.

Eco-friendly design

Superior environmental adaptability

Reliable mechanical performance

Excellent breaking performance

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Features

Technical Specifications

Features

  • 01

    Eco-friendly design

    Employs vacuum interrupter units with nitrogen or clean air as insulating medium. Fluorine-free solution with GWP value of 0.

  • 02

    Superior environmental adaptability

    Insulating medium eliminates low-temperature liquefaction risks. No exposed mechanical transmission components. Withstands harsh conditions including -50℃ extreme cold, high altitude, condensation, and ice coverage.

  • 03

    Reliable mechanical performance

    Adopts an integrated die-cast aluminum base spring operating mechanism. Compact structural design ensures stable output performance, high reliability, and maintenance-free operation. Mechanical life meets M2 class requirements.

  • 04

    Excellent breaking performance

    Full product series delivers breaking capacity up to 40kA, suitable for diverse complex operating conditions.

Technical Specifications

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  • Rated voltage(kV)

    31.5, 40.5, 72.5, 145

  • Rated frequency(Hz)

    50/60

  • First-pole-to-clear Factor

    1.3/1.5

  • Rated current(A)

    Up to 3150

  • Rated short-circuit breaking current(A)

    Up to 40

  • Rated short circuit making current (peak)(kA)

    Up to 104

  • Rated short-time withstand current(kA)

    Up to 40

  • Rated peak withstand current(kA)

    Up to 104

  • Rated short-time withstand current duration(s)

    4

  • Rated operating sequence

    O-0.3s-CO-3min-CO

  • Mechanical edurance(times)

    10000

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