Key Product Advantages

1. High Breaking Capacity for Demanding MV Applications

The DH1(VS1)-12 covers a wide range of electrical requirements with:

• Rated voltage: 12kV
• Rated current: 630A–3150A
• Short-circuit breaking current: up to 40kA

The product provides reliable fault interruption capability and stable operation under demanding power system conditions, making it suitable for industrial and utility-grade medium-voltage applications.

2. Long Mechanical Life & Low Maintenance Requirement

Designed for long-term operation, the DH1(VS1)-12 delivers:

• Mechanical endurance: 20,000 operations
• Rated current switching endurance: 20,000 operations
• Short-circuit breaking endurance: 50 operations at 40kA

The durable design reduces maintenance frequency and improves operational reliability throughout the equipment lifecycle.

3. Stable Operating Performance & Precise Control

The circuit breaker adopts a reliable operating mechanism with accurate control of key performance parameters, including:

• Opening and closing time
• Contact travel
• Contact bounce time
• Main circuit resistance
• Three-phase synchronization performance

Fast and consistent fault isolation helps protect electrical equipment and improve the safety of the entire power distribution system.

Flexible Installation for Different Switchgear Applications

The DH1(VS1)-12 can be integrated into various medium-voltage switchgear configurations, including:

• Metal-clad switchgear systems
• Withdrawable switchgear panels
• Industrial MV distribution systems
• Power substations

Its compact design and flexible mounting structure allow easy integration into different engineering projects.

Typical Applications

The DH1(VS1)-12 vacuum circuit breaker is widely applied in:

• Utility distribution substations
• Industrial and mining power systems
• Metallurgy, chemical, and manufacturing plants
• Commercial and industrial parks
• Infrastructure and transportation projects
• Medium-voltage switchgear assemblies

Complete Medium Voltage Equipment Solution from DHECN

DHECN specializes in the R&D and manufacturing of medium-voltage electrical equipment, providing reliable solutions for global power distribution projects.

Our product portfolio includes:

• Medium Voltage Vacuum Circuit Breakers (VCB)
• Current Transformers (CT)
• Voltage Transformers (PT/VT)
• Disconnectors and related switchgear components

With strong manufacturing capability, professional technical support, and flexible OEM cooperation options, DHECN supports global switchgear manufacturers, EPC contractors, and power industry partners with reliable MV electrical solutions.

DHECN – Reliable Partner for Medium Voltage Power Solutions

DHECN continues to focus on innovation and quality in medium-voltage electrical equipment manufacturing, delivering safe, efficient, and dependable products for customers worldwide.

We welcome global partners to explore cooperation opportunities with DHECN.