12kv 3-Phase Vacuum Circuit Breaker for Indoor High Voltage Power Grid Protection

• Customization: Available
• Model NO.: ZN28-12

Product Description

Reliable 12KV 3-Phase Vacuum Circuit Breaker for Indoor High Voltage Power Grid Protection
12KV 3-phase vacuum circuit breakers, ideal for high-voltage grids, use vacuum arc extinguishing with an oil-free structure. They feature strong breaking capacity, good insulation, long service life, and reliability, quickly cutting off fault currents to ensure stable power system operation.

Product Description

12KV 3-phase vacuum circuit breakers are critical devices in high-voltage power systems. They are high-voltage switching equipment that utilizes vacuum as the arc-extinguishing and insulating medium, with specially designed contacts to rapidly interrupt currents. They are used to control and protect power circuits, deployed in distribution networks and industrial facilities to ensure safe and reliable power supply.

Product Parameters

 

Item	Units	Parameters
Rated voltage	KV	12
Rated current	A	630-3150
Rated short- circuit breaking current	KA	20	31.5	40
Rated short- circuit closing current	KA	50	80	100
Rated dynamic steady electric current(peak)	KA	50	80	100
Rated thermal stability current(RMS)	KA	20	31.5	40
Rated thermal stability time	S	4
The breaking times of rated short circuit breaking current	Times	30 (50)
Open time of CD10 electromagnetic operating mechanism	mS	< 80
Rated operating sequence		O-0.3s-CO- 180s-CO
A minute power frequency withstand voltage(RMS)	KV	The phase 42, section 48
Lightning shock pressure	KV	The phase 75, section 85
Mechanical life	Times	10000
Note: 20KA,31.5KA   t=0.3s t 1= 180s    40KA t=180s t 1= 180s.

Product features

 

• Excellent arc extinguishing performance: Adopting a vacuum arc extinguishing chamber, it can quickly cut off the arc when the current crosses zero, with strong breaking ability and reliable interruption of short-circuit current and load current.  
• Excellent insulation properties: Using vacuum as the insulation medium, it has high insulation strength, strong withstand voltage ability, and reduces the risk of insulation failure.    
• Safety and Environmental Protection: Oil free design, and no harmful gas emissions during arc extinguishing process, meeting environmental protection requirements.  
• Reliable operation: Fast opening and closing speed, able to quickly respond to protection signals, ensuring the stability of the power grid.  
• Compact structure: small size, light weight, easy to install, space saving, suitable for various installation scenarios.
• 

Packaging & Shipping

Normal package, Standard export wooden crate, Or based on your demands.

Company Introduction

Jecsany Electrical Equipment Co., Ltd. was established in 2009, and it is backed by China Electric Porcelain Import and Export Co Ltd.   Since 1981, the company has focused on the research and development, manufacturing and export of professional high-voltage power products, and has accumulated profound technical background and rich industry experience in this field, and has built a reputation for delivering high-quality products and exceptional service to our clients.