1.14KV Vacuum Interrupter For Contactor

Model: TJ040K

The Sunway Hanguang 1.14kV Vacuum Interrupter for Contactors is a high-performance vacuum arc extinguishing unit specifically designed for medium and low-voltage control systems, focusing on upgrading contactor arc extinguishing capabilities and addressing the shortcomings of traditional air arc extinguishing methods. As a leading manufacturer of medium and low-voltage vacuum arc extinguishing components in China, the company leverages over fifty years of experience, German and Japanese equipment, and more than 30 patents to create zero-arc, maintenance-free products that are compatible with mainstream contactors, serving industries such as mining and rail transit. With over 500,000 units installed and operating reliably in more than 50 countries, it is a trusted supplier.

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Product Description

Sunway Hanguang has been deeply rooted in the electrical field for over fifty years, possessing a professional factory, fully automated production lines, and cutting-edge German and Japanese equipment. Backed by over 30 patents, it achieves full process traceability and boasts leading annual production capacity. The 1.14kV Vacuum Interrupter for Contactors is specifically designed for contactor arc extinguishing upgrades and is a core component for improving the safety of electrical equipment.

This product has a rated voltage of 1.14kV (1140V AC), is compatible with 50Hz systems, has a vacuum degree of ≥1.33×10⁻³Pa, offers arc-free switching and is maintenance-free. It complies with IEC, GB, and NEMA standards, is compatible with mainstream contactors, and has accumulated over 500,000 units installed globally, earning widespread recognition.

Product Core Features and Advantages:

1. Robust and Weather-Resistant, Safe and Reliable

The 1.14kV Vacuum Interrupter for Contactors uses high-purity Cu-Cr alloy contacts (current limiting value <3A), resisting welding and suppressing overvoltage; coupled with imported 316L stainless steel bellows, the annual leakage rate is <0.5%. With an integrated ceramic-metal structure, it has a power frequency withstand voltage of 21kV/1min and an impulse withstand voltage of 40kV, suitable for Class III pollution, -40℃~+85℃ and altitudes ≤4000 meters, achieving 30 years of maintenance-free operation.

2. Precision Engineering, Quality Traceability

Leveraging core processes such as high-frequency induction sealing, product consistency is enhanced; core components are strictly selected and inspected, with full process quality control. Each product undergoes 12 comprehensive inspections before leaving the factory, with QR code traceability, a failure rate of ≤0.02%, and an average trouble-free operation of over 15 years.

3. Universal Compatibility, Smart and Scalable

Standardized design, quick tool-free replacement, compatible with various mainstream contactors; three-phase synchronicity and bounce time are both ≤2ms, meeting the requirements for high-frequency operation of ≤3600 times/hour. Optional monitoring modules are available, supporting connection to PLC and SCADA systems, and compatible with Industry 4.0.

4. Patented Technology, Comprehensive Service

With over 30 core patents, the 1.14kV Vacuum Interrupter for Contactors has passed multiple authoritative certifications, and supports overseas certification and OEM/ODM customization. Standard models are shipped within 5-10 days, and 30 global technical centers provide 7×24-hour multi-language full-process service.

Product Technical Parameters Table

Main Technical Specification
VOLTAGE RATINGS
Rated voltage(Ur)	kV	1.14
Rated short-time(1min)power-frequency withstand voltage(Ud)	kV	21
Rated lightning impulse withstand voltage(Peak)(Up)	kV	40
Rated frequency(fr)	Hz	50
CURRENT RATINGS
Rated current(Ir)	A	1250
Circuit resistance at lowest rated contact force	μΩ	≤60
Rated short-time withstand current(lk)	kA	10
Rated duration of short-circuit(tk)	s	4
Rated peak withstand current(lp)	kA	10
Rated making current	kA	6.3
Limit breaking current	A	10
MECHANICAL DATA
Weight of movable parts	kg	≤0.6
Closing force due to bellow and atmosphere	N	70±30
Force required to hold contacts open at full stroke	N	120±40
MECHANICAL REQUIREMENTS
Clearance between open contacts	mm	3±1
Average opening speed (average of first 75% contact gap)	m/s	0.4-0.5
Average closing speed (average of last 30% contact gap)	m/s	0.15-0.25
Rated added external contact final force	N	250±50
Contact bouncing duration at closing operation	ms	≤2
Closing and opening non-simultaneity of three-phase contacts	ms	≤2
Maximum rebound during opening	mm	≤1
LIFE
Storage life	years	20
Rated mechanical endurance	Times	300000
Contacts limit erosion	mm	3

Product Application Scenarios

- Mining and Underground Equipment: Suitable for motor control in coal mines, resistant to high dust and strong vibrations, ensuring operational safety;

- Rail Transit: Used in auxiliary power systems, meeting high reliability and high-frequency operation requirements;

- Oil and Marine Engineering: Used in offshore platforms and drilling equipment, resistant to salt spray, high humidity, and corrosion;

- New Energy and Power Compensation: Used in wind power and photovoltaic control circuits and reactive power compensation devices, ensuring stable power supply;

- Special Industrial Environments: Suitable for chemical, explosion-proof areas, and high-voltage UPS systems in data centers, resistant to harsh working conditions.

Frequently Asked Questions

1. What customization options are available for the product?

Supports multi-dimensional customization of current, operating frequency, monitoring modules, etc., and provides OEM/ODM services, compatible with various international standards and different brands of contactors.

2. How is the quality stability of each product ensured?

Core components are strictly selected and inspected, relying on German and Japanese equipment and precision processes, with full-process quality control; each unit undergoes 12 comprehensive inspections, with QR code traceability, and a failure rate of ≤0.02%.

3. What does the warranty policy and after-sales service include?

Provides a 10-year limited warranty (vacuum decay ≤20%), and 30 global technical centers provide 7×24-hour multi-language service, covering installation, troubleshooting, etc.

4. What are the important points to note regarding product transportation and installation?

Transportation uses moisture-proof and shock-proof packaging; technical guidance is available for installation, which must comply with environmental requirements. Performance verification is recommended after installation, and specialized training can be provided by the factory.

1.14KV Vacuum Interrupter For Contactor