VD4/VMS/VB1/VB2 Series Vacuum Circuit Breaker 12kV 1250A for MV Switchgear

Product Installation:

General product information

Place of Origin:	5th Floor, No. 3, Jinghong West Road, Liushi Town, Yueqing City, Wenzhou City, Zhejiang Province
Brand Name:	MINGTUO
Model Number:	VCB(ZN63)
Certification:	IOS  CE  ROHS

Product Commercial Terms

Minimum Order Quantity:	1
Price:	500$
Packaging Details:	Wooden box packaging
Delivery Time:	Within fifteen days
Payment Terms:	100% prepaid, 70%/30%, 80%/20%
Supply Ability:	Available at any time

Description：

Our VD4/VS1 vacuum circuit breakers represent advanced medium-voltage protection technology, designed for 7.2kV to 12kV power systems. Utilizing innovative vacuum interruption technology and epoxy resin solid insulation poles, they ensure safe and reliable circuit interruption in demanding electrical environments.

Key Specifications:

- Rated Voltage: 12kV

- Rated Current: 630A, 1250A, 1600A, 2000A, 2500A, 3150A

- Breaking Capacity: 25kA, 31.5kA, 40kA

- Mechanical Life: 30,000 operations

- Storage Temperature: -40°C to +55°C

Technical Features:

- Spring-operated mechanism

- Drawout or fixed installation options

- IP4X protection degree

- Compact dimensions for space-saving installation

- Integrated anti-misoperation interlock system

Main Applications:

- Power plant auxiliary systems

- Industrial distribution networks

- Mining and metallurgical operations

- Commercial building power supply

- Renewable energy integration

Quality Assurance:

Manufactured in compliance with GB, DL, and IEC 62271-100 standards, each unit undergoes rigorous routine testing and type testing to ensure optimal performance. Our breakers deliver maintenance-free operation and exceptional electrical endurance for critical power infrastructure.

 

 

Quick Detail:

 

Vacuum Circuit Breakers (VCB)

 

Medium Voltage Vacuum Circuit Breakers

 

High Voltage Vacuum Circuit Breakers

 

VD4 Vacuum Circuit Breakers

 

VS1 Vacuum Circuit Breakers

 

VBM Vacuum Circuit Breakers

 

ZN63 Vacuum Circuit Breakers

 

Draw-out Vacuum Circuit Breakers

 

Spring-type Vacuum Circuit Breakers

 

Solid Insulated Vacuum Circuit Breakers

 

Indoor Vacuum Circuit Breakers

 

Switchgear Vacuum Circuit Breakers

 

Panel-mounted Vacuum Circuit Breakers

 

Distribution Vacuum Circuit Breakers

 

Generator Circuit Breakers

 

12kV Vacuum Circuit Breakers

 

1250A Vacuum Contactors

 

25kA Breaking Capacity Vacuum Circuit Breakers

 

Vacuum Circuit Breakers

 

Vacuum Switches

 

Medium Voltage Circuit Breakers

 

High Voltage Vacuum Circuit Breakers

Core Function & Purpose

The Vacuum Circuit Breaker (VCB) serves as a critical protection and control device in medium-voltage power systems. Its dual functionality ensures both operational flexibility and system safety:

 

Circuit Control Capabilities  

- Safely energizes and de-energizes power circuits during normal operation  

- Provides reliable electrical isolation for equipment maintenance  

- Enables remote operation through automation system integration  

 

System Protection Features

- Rapid short-circuit current interruption to prevent fault propagation  

- Timely overload protection for connected electrical equipment  

- Enhanced system security through ground fault protection  

 

Typical Application Scenarios

- Power Generation Systems: Auxiliary power in plants, generator output protection  

- Transmission & Distribution Networks: Substation feeders, distribution line protection  

- Industrial Applications: Large motor protection, rectifier transformer safeguarding  

- Special Environments: Mining, metallurgical operations in harsh conditions  

 

Technical Advantages 

Utilizing vacuum interruption technology, VCBs deliver:  

- High breaking capacity  

- Extended electrical lifespan  

- Minimal maintenance requirements  

- Reliable performance in frequent switching applications  

 Ideal for modern smart grid infrastructure, these breakers provide essential protection where operational reliability and safety are paramount. 

1. Competitive pricing, factory quality assurance

2. Customizable housings

3. Extensive production and installation experience, ready to provide guidance

4. Assistance with commissioning and selection

Real photos

Application Scenarios of Vacuum Circuit Breaker

1. Power Generation Sector

- Generator circuit protection in thermal power plants

- Auxiliary power system control in hydropower stations

- Renewable energy integration in solar/wind farms

2. Transmission & Distribution Networks

- 35kV/12kV substation feeder protection

- Distribution transformer secondary side protection

- Ring main unit and switchgear applications

3. Industrial Power Systems

- Steel plant arc furnace transformer protection

- Chemical plant high-voltage motor control

- Mining industry underground power distribution

4. Infrastructure Applications

- Metro and railway traction power supply

- Airport and port terminal power distribution

- Hospital and data center backup power systems

5. Special Environments

- Offshore platform electrical systems

- Desert mining operation power networks

- High-altitude substation applications

Our vacuum breakers maintain reliable performance across diverse operating conditions, from -40°C arctic environments to +55°C tropical climates, ensuring continuous operation in critical power infrastructure worldwide.