ZW32-12FG/630A Outdoor High Voltage Vacuum Circuit Breaker Product Overview and Key Technical Parameters

The ZW32-12FG/630A outdoor high voltage vacuum circuit breaker is a star model in the ZW32-12 series pole-mounted vacuum circuit breakers, widely used for protection and control of 10kV outdoor distribution lines. This article provides a comprehensive interpretation from product positioning, model designation, service conditions and technical parameters to help users gain an in-depth understanding of this classic circuit breaker.

I. Product Overview

The ZW32-12 series outdoor pole-mounted vacuum circuit breakers are widely used 10kV distribution equipment in power systems. Among them, the ZW32-12FG/630A is an enhanced outdoor high voltage vacuum circuit breaker with an isolating switch, with rated current 630A and breaking current 20kA, suitable for overload protection and short-circuit interruption in rural and urban distribution lines. The product adopts a three-phase post-type fully enclosed structure with solid-sealed vacuum interrupters, featuring anti-condensation, long service life and minimal maintenance.

II. Model Designation

The meaning of each part of the ZW32-12FG/630A model: Z - vacuum circuit breaker, W - outdoor type, 32 - design serial number, 12 - rated voltage 12kV, F - with boundary function (watchdog), G - with isolating switch, 630 - rated current 630A, A - improved version. This ZW32-12FG/630A outdoor high voltage vacuum circuit breaker integrates a primary-secondary fusion interface, facilitating FTU installation for distribution automation.

III. Service Conditions

• Ambient temperature: -40degC～+80degC
• Altitude: not exceeding 3000m
• Pollution level: Class IV
• Wind speed: not exceeding 34m/s

IV. Main Technical Parameters

The ZW32-12FG/630A outdoor high voltage vacuum circuit breaker performs stably and reliably under rated parameters, with contact gap 9±1mm, overtravel 2±0.5mm, closing bounce time ≤2ms, and excellent open/close synchronism, suitable for frequent operation scenarios.

V. Application Scenarios

This outdoor high voltage vacuum circuit breaker is widely used in 10kV distribution line pole-mounted switches, user boundary switches, tie switches and other scenarios. With FTU controllers, it can achieve remote monitoring, fault isolation and automatic power restoration, making it an ideal device for distribution automation construction.