The ZW32-12 outdoor vacuum circuit breaker (hereinafter referred to as the "circuit breaker") is rated for a voltage of 12kV and designed for three-phase AC systems with a frequency of 50Hz. It is primarily used for breaking and closing load currents, overload currents, and short-circuit currents in power systems.

This circuit breaker is suitable for protection and control in distribution systems of substations and industrial and mining enterprises, as well as in rural power grids where frequent operation is required.

The ZW32-12 circuit breaker features a compact size, lightweight design, anti-condensation properties, and maintenance-free operation. It is well-suited for use in harsh climatic conditions and polluted environments.

Item	Unit	Parameter
Rated Voltage	kV	12
Rated Frequency	Hz	50
Rated Current	A	630
Rated Short-Circuit Breaking Current	kA	20
Rated Peak Withstand Current (Peak)	kA	50
Rated Short-Time Withstand Current	kA	20
Rated Short-Circuit Closing Current (Peak)	kA	50
Mechanical Lifespan	Times	10,000
Rated Short-Circuit Breaking Current Breaking Times	Times	30
Power Frequency Withstand Voltage (1 min): (Wet) (Dry) Phase-to-Phase and to Ground/Across Open Contacts	kV	42/48
Lightning Impulse Withstand Voltage (Peak) Phase-to-Phase, to Ground/Across Open Contacts	kV	75/85
Secondary Circuit 1-Minute Power Frequency Withstand Voltage	kV	2