11KV Vacuum Interrupter For Contactor

Model: TJ340GN, TJ340G, TJ340E, TJ340GE, TJ340D

Sunway Hanguang, a professional manufacturer with over fifty years of experience in the electrical equipment field, has launched the 11kV Vacuum Interrupter for Contactors, a high-performance vacuum arc extinguishing unit specifically designed for medium-voltage power control systems. This product precisely addresses the shortcomings of traditional arc extinguishing methods, offering advantages such as arc-free switching and long-term maintenance-free operation. Backed by a rigorous quality control system, it is suitable for complex operating conditions across various industries. As a reliable supplier, Sunway Hanguang is bringing this "Made in China" product to the global market, ensuring the stable operation of medium-voltage power systems.

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Product Description

Sunway Hanguang boasts a modern professional factory, based in China and serving the global market. It is a trusted manufacturer and supplier in the global medium-voltage electrical equipment field, with products and services reaching over 60 countries and regions and a cumulative installed base exceeding 350,000 units. Its core product, the 11kV Vacuum Interrupter for Contactors, is compatible with 50Hz power systems, features a vacuum level of ≤1.33×10⁻³Pa, and offers arc-free switching and long-term maintenance-free operation, significantly reducing user operating and maintenance costs and precisely meeting the core needs of medium-voltage power control.

Product Specifications Table

Main Technical Specification
Model NO.	unit	VITJ 12/630G	VITJ 12/630E
VOLTAGE RATINGS
Rated voltage(Ur)	kV	12	12
Rated short-time(1min)power-frequency withstand voltage(Ud)	kV	42	42
Rated lightning impulse withstand voltage(Peak)(Up)	kV	75	75
Rated frequency(fr)	Hz	50	50
CURRENT RATINGS
Rated current(Ir)	A	630	630
Circuit resistance at lowest rated contact force	μΩ	≤60	≤60
Rated short-time withstand current(lk)	kA	6.3	6.3
Rated duration of short-circuit(tk)	s	4	4
Rated peak withstand current(lp)	kA	6.3	6.3
Rated making current	kA	6.3	6.3
Limit breaking current	A	6.3	6.3
MECHANICAL DATA
Weight of movable parts	kg	≤0.7	≤0.7
Closing force due to bellow and atmosphere	N	70±30	70±30
Force required to hold contacts open at full stroke	N	100±40	100±40
MECHANICAL REQUIREMENTS
Clearance between open contacts	mm	6±1	6±1
Average opening speed (average of first 75% contact gap)	m/s	0.4-0.5	0.4-0.5
Average closing speed (average of last 30% contact gap)	m/s	0.15-0.25	0.15-0.25
Rated added external contact final force	N	250±50	250±50
Contact bouncing duration at closing operation	ms	≤2	≤2
Closing and opening non-simultaneity of three-phase contacts	ms	≤2	≤2
Maximum rebound during opening	mm	≤1	≤1
LIFE
Storage life	years	20	20
Rated mechanical endurance	Times	300000	300000
Contacts limit erosion	mm	3	3

Product Features and Advantages

The 11kV Vacuum Interrupter for Contactors offers outstanding advantages in materials, processes, performance, and maintenance, making it suitable for demanding environments:

- Reliable Material and Sealing: Utilizes high-purity Cu-Cr alloy contacts and imported bellows, with strict leak detection using helium mass spectrometry, resulting in an annual leakage rate of <0.5%, extending service life;

- Strong Insulation and Environmental Adaptability: Enhanced by high-frequency induction sealing technology, it features a power frequency withstand voltage of 28kV and lightning impulse withstand voltage of 75kV, and can withstand a wide temperature range of -40℃ to +85℃ and altitudes up to 4000 meters;

- Rigorous Quality Control: Each unit undergoes 12 rigorous inspections before leaving the factory, with QR code traceability, resulting in a field failure rate of <0.02%;

- Convenient Adaptability: Compatible with mainstream contactors, tool-free replacement, expandable with intelligent monitoring, and supported by 7x24 hour maintenance services from 35 global technical centers.

Product Applications

The 11kV Vacuum Interrupter for Contactors has a wide range of applications and is suitable for complex working conditions such as high dust and high salt spray environments. Its core applications include: high-voltage motor control in mines, traction auxiliary power supplies in rail transit, equipment on offshore oil platforms, control circuits in wind and solar power substations, high-voltage UPS systems in data centers, and chemical explosion-proof areas, providing reliable protection for medium-voltage power systems in various industries.

Frequently Asked Questions

1. Customization Services: Supports multi-dimensional customization and OEM/ODM services, leveraging the advantages of flexible factory production;

2. Quality Assurance: Strictly selected core components, full-process quality control, and support for traceability inquiries;

3. Warranty and After-Sales Service: 10-year limited warranty, 7×24-hour response from global service points;

4. Installation Notes: Customized moisture-proof and shock-proof packaging; pressure resistance and mechanical characteristics tests must be completed after installation.

The 11kV Vacuum Interrupter for Contactors is a testament to Sunway Hanguang's over fifty years of technology and manufacturing expertise. Based on an advanced production system and rigorous quality control, it creates high-quality products suitable for the global market. This product, rooted in intelligent manufacturing in China, addresses traditional pain points, adapts to various industry conditions, and is complemented by comprehensive after-sales service, providing an efficient and reliable arc extinguishing solution for medium-voltage power control systems and solidifying its global market recognition.

11KV Vacuum Interrupter For Contactor