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ZW32-12G Series outdoor high voltage vacuum circuit breaker (plateau).jpg

China ZW32-12G Series Outdoor High Voltage Vacuum Circuit Breaker Suppliers & Factory for 12kV Systems

The ZW32-12G Series is a high-performance outdoor vacuum circuit breaker designed for 12kV, 50Hz power systems, making it an ideal choice for diverse applications across China. Manufactured by top suppliers in the industry, this circuit breaker is rated for operation at altitudes up to 3000 meters, effectively managing load, overload, and short-circuit currents. With a focus on reliability and efficiency, it is engineered for frequent operation and incorporates features like auto-reclosing and remote three control functions through an advanced controller. Built to endure extreme environmental conditions, including cold, wind, ice, and class IV pollution, this robust product is sourced directly from leading factories, ensuring quality and durability for your electrical needs in challenging outdoor settings

Product Details

Technical Specification

Item			Units	Parameters
Rated voltage			KV	12
Rated insulation level	1min power frequency withstand voltage	Dry	KV	To earth, phase to phase 48 Fracture 48
		Wet		34
	Lightning impulse withstand voltage (peak)			To earth, phase to phase 85 Fracture 85
Rated frequency			Hz	50
Rated current			A	630
Rated short-circuit breaking current			KA	12.5/16/20
Rated short-circuit closed current (peak)			KA	50
Rated peak withstand current			KA	50
Rated short-time withstand current (4s)			KA	20
Rated operating sequence				O-0.3s-CO-180s-CO
Switch on/opening time			ms	25-50/15-50
Rated short-circuit breaking current breaking times			Times	30
Mechanism life			Times	10000
The control circuit and auxiliary circuit 1 min power frequency withstand voltage			V	2000
Rated operating voltage and auxiliary circuit rated voltage			V	DC220/AC220
Over-current tripper	Rated current		A	5
	Tripping current precision		%	±10

Product Model

Dimension

Frequently Asked Questions

QWhat is the rated voltage of this vacuum circuit breaker?

AThe rated voltage of this vacuum circuit breaker is 12 KV, making it suitable for medium-voltage distribution systems.

QWhat are the available rated short-circuit breaking current options?

AThe breaker supports three rated short-circuit breaking current levels: 12.5 KA, 16 KA, and 20 KA, offering flexibility for different fault current requirements.

QWhat is the rated operating sequence of this circuit breaker?

AThe rated operating sequence is O-0.3s-CO-180s-CO, which complies with standard auto-reclosing requirements for medium-voltage switchgear applications.

QWhat control and auxiliary circuit voltages are supported?

AThe breaker supports both DC 220V and AC 220V for the rated operating voltage and auxiliary circuit rated voltage, providing compatibility with a wide range of substation control systems.

QHow many mechanical operations can the mechanism withstand throughout its service life?

AThe operating mechanism is designed for a mechanical life of 10,000 operations, ensuring long-term reliability and reduced maintenance requirements.

QWhat are the power frequency withstand voltage levels for the dry and wet conditions?

AUnder dry conditions, the 1-minute power frequency withstand voltage is 48 KV (to earth, phase to phase, and fracture). Under wet conditions, it is 34 KV, meeting standard insulation requirements for 12 KV class equipment.