Vacuum Contactor

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Vacuum Contactor

Power Inverter Controlled Vacuum Contactors
Enclosed Vacuum Contactor
1140V Vacuum Contactor
3.6kV Vacuum Contactors
Medium Voltage Vacuum Contactor (7.2/12kV)
24kV Vacuum Contactor
High Voltage Vacuum Contactor (40.5KV)
Vacuum Isolating Phase Change Switch
Vacuum Circuit Breaker

Why do users need vacuum contactor?

  • Vacuum contactor can be applied in harsh environments and frequent operation conditions, reducing the maintenance required for electrical components, thereby lowering costs, improving production efficiency, and optimizing the availability of electricity.

 

Greegoo - Dedicated to Manufacturing Vacuum Contactors

  • We have been manufacturing vacuum contactors for a long time, and we continue to strive for improvement. We always engage with our partners in discussions on how to enhance our technology to meet their needs.

Greegoo Vacuum Contactor

Medium Voltage Vacuum Contactor (7.2/12kV)
Single Pole Vacuum Contactor

Single Pole Vacuum Contactor

7.2KV, 12KV, 160A, 250A, 400A and 630A.

single phase medium voltage vacuum contactor

EVC1-12/160~630-6.3G single pole high altitude 12kv vacuum contactor

630A 12KV. Altitude upto 4000 meters, single phase vacuum contactor.

7.2KV Vacuum Contactor

7.2KV 12KV Vacuum Contactor 160A to 630A

6.6KV/7.2kV and 11KV/12kV Vacuum Contactor starter, 160A to 630A for a variety of power control, 7.2kv vacuum contactor, 11kv vacuum contactor, mv vacuum contactor.

medium voltage vacuum contactor

Medium Voltage Vacuum Contactor EVC8C-7.2KV/12KV

7.2kV and 12kV Vacuum Contactor, 250A to 800A, general purpose vacuum contactor, 6.6KV Vacuum Contactor, 11kv Vacuum Contactor.

12kV 630A single phase vacuum contactor

12kV 630A single phase vacuum contactor

160A,250A,400A and 630A 12KV single phase casting type vacuum contactors

6.6kV 7.2kV Vacuum Contactor

6.6kV 7.2kV Vacuum Contactor

160A,250A,400A and 630A 6.6/7.2KV single phase casting type vacuum contactors

12kv high altitude vacuum contactor

12KV high-proto type high altitude vacuum contactor

250A,400A,630A,800A and 1000A 12KV high-proto type vacuum contactor, Altitude up to 4000 meters casting type three phase vacuum contactor.

12KV Hybrid Vacuum Switchgear

12KV Latching Hybrid Vacuum Switchgear

12KV, 400A to 1250A, vacuum contactor and vacuum circuit breaker combined vacuum switch

12KV 1600A 2000A 2500A Vacuum Contactor

12KV 1600A 2000A 2500A Vacuum Contactor

12KV 1600A, 2000A, 2500A

AC high voltage vacuum contactor with fuse composite apparatus

AC high voltage vacuum contactor with fuse composite apparatus

7.2kV and 12kV drawer type removable vacuum contactor, 200A and 315A, fuse limit current protection, breaking capacity up to 40kA.

Compact Medium Voltage Vacuum Contactor EVC4-160A to 630A 12KV

Compact Medium Voltage Vacuum Contactor EVC4-160A to 630A 12KV

12KV 160A, 250A, 400A, 630A Vacuum Contactor

Economical 12kv vacuum contactor

EVC8 12KV 250A 400A and 630A Vacuum Contactor

250A, 400A and 630A, economical type

High Altitude medium voltage vacuum contactor

EVC7-12-160/250/400/630G

160A,250A,400A,630A 12KV. Altitude upto 4000 meters

CKG4 12KV Vacuum Contactor

CKG4 12KV Vacuum Contactor

12KV 160A, 250A, 400A and 630A MV vacuum contactor

 


The main function of a vacuum contactor is simply to make and break the connection between the power source and the load. It is specifically designed for medium voltage applications, typically ranging from 1.14kV to 40.5kV. The use of a vacuum ensures that the arc typically generated during the switching process is eliminated, which extends the life of the contactor and reduces maintenance requirements.

 

Here are some of the benefits of using a vacuum contactor:

 

Arc Suppression: The vacuum effectively suppresses the electrical arc that can occur when contacts within a contactor open or close, thus preventing damage to the system.

Longevity: Vacuum contactors tend to have a longer lifespan compared to other types of contactors because the contacts are less susceptible to wear and degradation due to the lack of atmospheric conditions that could lead to oxidation.

Reliability: The sealed vacuum environment provides consistent performance over a wide range of operating conditions and reduces the likelihood of faults, leading to increased reliability.

Safety: By containing the contacts within a vacuum, the risk of fire and explosion is significantly reduced, which enhances the overall safety for operators and equipment.

Compact Design: Vacuum contactors are generally smaller than their air-insulated or oil-insulated counterparts, which saves space in electrical panels and switchgear.

Low Maintenance: With fewer parts exposed to wear and no need for gases or oils that require regular replacement or maintenance, vacuum contactors are low maintenance.

Noise Reduction: The operation of a vacuum contactor is quieter, which is beneficial in environments where noise pollution is a concern.


Vacuum contactors are commonly used in industrial motor starters, transformer switching, capacitor switching, and other applications where efficient, reliable high-voltage switching is required.

 

rail vacuum contactor

FAQ
Q:What is the benefit of using a vacuum contactor?

Medium voltage vacuum contactors are specialized electrical switches designed for medium-voltage power systems. They utilize vacuum interrupters to extinguish arcs when contacts are opened or closed. These contractors offer advantages such as enhanced safety, longevity, and low maintenance.

Q:What is the principle of vacuum contactor?

The vacuum contactor is mainly composed of a vacuum interrupter and an operating mechanism. The vacuum interrupter has two functions of reliable arc extinguishing when passing the normal operating current and frequently switching the operating current. But it cannot cut off the overload and short-circuit current.

Q:Why fast vacuum contactor can be act as bypass switch?

Fast vacuum contactors are widely used as bypass switches due to their quick operation (<5 milliseconds), high reliability, and high current tolerance. They ensure continuous power supply during main circuit faults or maintenance, making them ideal for scenarios requiring rapid response and efficient power management.

Q:What is the main difference between medium voltage and low voltage vacuum contactor?

The main difference between medium voltage and low voltage vacuum contactor lies in their voltage range and application scenarios. Medium voltage vacuum contactors are used in systems ranging from 3.6kV to 36kV, suitable for controlling and protecting medium voltage motors. Low voltage vacuum contactors are used below 2kV, suitable for low voltage motors and equipment. Medium voltage contactors are more robustly designed and costlier, while low voltage contactors are more compact, fitting well in low voltage distribution cabinets.

Q:What are Vacuum Contactors?

Vacuum contactors are electrical switching devices used to control low and medium voltage circuits, typically in the range of 1.14kV to 40.5kV. They operate by using a vacuum interrupter to extinguish the arc formed when electrical contacts open or close, ensuring reliable switching with minimal wear. The vacuum environment prevents oxidation and contamination of the contacts, making them durable and suitable for frequent operations.

Q:What is the difference between a vacuum contactor and a breaker?

Vacuum contactors are electrical switching devices used for frequent load switching in low and medium voltage systems (1.14kV-40.5kV). They utilize a vacuum interrupter to extinguish arcs, ensuring reliable, low-maintenance operation with minimal contact wear. Unlike circuit breakers, which are designed for fault interruption and high breaking capacity, vacuum contactors are optimized for repetitive switching of normal loads, such as motors, transformers, or capacitor banks. They are compact, cost-effective, and widely used in industries like mining and manufacturing. Vacuum Circuit breakers, however, prioritize protection against short circuits and overloads, making them less suitable for frequent switching but essential for system safety.

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