Outdoor High-Voltage Integrated Primary and Secondary Vacuum Circuit Breaker ZW32-12
Negotiable
China
No. 439, Yizhi Road, Zone A, Xiaolan Economic and Technological Development Zone, Nanchang County, Nanchang City, Jiangxi Province
0791-88556630
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Product Introduction

Overview: The ZW32-12 circuit breaker features a three-phase post-type solid-sealed pole, utilizing a vacuum longitudinal magnetic field for arc extinguishing, which ensures stable and reliable breaking performance. It employs solid insulation made of silicone rubber/epoxy resin, which eliminates the risk of fire and explosion. The breaker is maintenance-free, lightweight (two-thirds the weight of similar products), easy to install, and has a long service life (with a mechanical lifespan of up to 10,000 operations). The newly designed spring operating mechanism adopts a straightforward and reliable linear transmission method, effectively avoiding the design flaws of traditional spring operating mechanisms, such as jamming and corrosion, significantly enhancing the reliability of the mechanism.

The ZW32-12 circuit breaker is primarily used for breaking load currents, closing overload currents, and short-circuit currents in power distribution networks. It is suitable for protecting and controlling distribution systems in substations, industrial and mining enterprises, as well as in urban and rural power grids and frequently operated locations.

The ZW32-12 circuit breaker has demonstrated excellent performance and good stability, which has been validated over more than 10 years of field operation, making it an outstanding brand among outdoor pole-mounted vacuum circuit breakers and earning widespread acclaim from users.

Technical Specifications:

 

No. Item Unit Value
1 Rated Voltage kV 12
2 Rated Frequency Hz 50
3 Rated Current A 630 / 1250
4 Rated Short-Circuit Breaking Current kA 20 / 25 / 31.5
5 Rated Peak Withstand Current kA 50 / 63 / 80
6 Rated Short-Time Withstand Current / Duration kA/S 20/4 / 25/4 / 31.5/4
7 Rated Short-Circuit Closing Current (Peak) kA 50 / 63 / 80
8 Rated Operating Sequence   0-0.3S-C0-180S-CO
9 Mechanical Lifespan Times 10,000
10 Rated Short-Circuit Breaking Current Breaking Times Times 30
11 1-Minute Power Frequency Withstand Voltage kV (Wet) Phase-to-Phase and to Ground/Across Open Contacts: 34/35
    kV (Dry) Phase-to-Phase and to Ground/Across Open Contacts: 42/49
12 Lightning Impulse Withstand Voltage (Peak) Phase-to-Phase, to Ground/Across Open Contacts kV 75/85
13 Secondary Circuit 1-Minute Power Frequency Withstand Voltage V 2000