Zn63A (VS1) -12 Embedded Pole Vacuum Circuit Breaker Vcb for Mv Switchgear

• Customization: Available
• Breaking Capacity: High Voltage Circuit Breakers
• Operation: Energy-storage Type
• Model NO.: ZN63A(VS1)-12/630-150
• Speed: High-Speed Circuit Breaker
• Arc-extinguishing Medium: Vacuum
• Installation: Fixed
• Structure: Vcb
• Poles Number: 3
• Type: Circuit Breaker
• Function: Conventional Circuit Breaker, Circuit-Breaker Failure Protection, Overcurrent Protection, OVP(Overvoltage Protection)
• Certification: ISO9001-2000
• Product Name: 12kv Vacuum Circuit Breaker
• Rated Current: 630A
• Pole Distance: 150mm
• Spring Operating Mechanism: Vs1 Type
• Control Voltage: AC/DC 220 V
• Rated Short-Circuit Breaking Current: 20 Ka
• Application: Indoor Switchgear
• OEM: Accept
• Transport Package: Standard Export Packaging
• Specification: 12kv
• Trademark: Liyond
• Origin: China
• Package Size: 62.00cm * 62.00cm * 80.00cm
• Package Gross Weight: 110.000kg

Product Description

The ZN63A(VS1)-12/630-20 vacuum circuit breaker is designed with embedded pole technology and insulation partitions to ensure reliable performance and operator safety. As a fixed type breaker, it is widely used in 12kV medium voltage switchgear systems, providing stable operation and extended service life.

Features

1.Embedded Pole Design - Improves insulation performance and extends service life.
2.Partitioned Structure - Enhances safety and prevents phase-to-phase faults.
3.Compact & Reliable - Easy installation, stable performance, and long endurance.
4.Safety Operation - Equipped with anti-pumping relay and interlock device.
5.Durable - Long mechanical and electrical life, suitable for frequent switching.
 

Technical parameters :

 

No.	Name	Unit	Data
1	Rated voltage	kV	12
2	Rated current	A	630		1000 1250			1600 2000 2500 3150
3	Rated short circuit breaking current	kA	20	25	20	25	31.5	31.5	40
4	Rated peak withstand current	kA	50	63	50	63	80	80	100
5	Rated short time withstand current	kA	20	25	20	25	31.5	31.5	40
6	Rated short circuit making current	kA	50	63	50	63	80	80	100
7	Switching operations of short circuit current	times	50
8	Rated operating sequence		O-0.3s-CO-180s-CO-180s-CO(40KA)
9	Mechanical endurance	times	10000
10	Rated breaking operations of the rated current	times	20000
11	Rated lighting impulse withstand voltage(full wave)	kV	75
12	1 min. rated power frequency withstand voltage	kV	42
13	Contact stroke	mm	9±1
14	Over-travel of contacts	mm	3.5±0.5
15	Closing speed	m/s	0.4∼0.8
16	Opening speed	m/s	0.9∼1.2
17	Contact bouncing duration at closing operation	ms	≤2
18	Simultaneity of three phase closing operation	ms	≤2
19	Closing time	ms	30∼70
20	Opening time	m/s	20∼50
21	Distance between phases	mm	150, 210, 275
22	D.C component		50%

 

Note: 

1. No.11&12 are provided when needed.

2. Switchgear should be with cold wind when the rated current is 4000A.

 

Ambient condition

1.Ambient temperature:-10ºC-+40ºC
2.Relative humidity:The average humidity of a day should be no more than 95%. The average humidity of a month should be no more than 90%.
3.Earthquake intensity: not exceed 8 degrees.
5.The height above sea level:≤1000 m (Except special requirements)
6.It should be installed in the places without fire, explosion, serious filth, and chemical erosion and violent vibration.

 

Why Choose Us

Professional manufacturer of medium voltage switchgear components
High quality with strict testing standards
OEM/ODM service available
Reliable delivery and technical support

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