ZN153-12 Three-Position Integrated Vacuum Circuit Breaker
ZN153-12 Three-Position Integrated Vacuum Circuit Breaker is a 12kV indoor medium-voltage switching device designed for metal-enclosed switchgear applications. By integrating circuit breaking, disconnecting, and grounding functions into a single mechanism, it provides a compact, safe, and reliable solution for modern power distribution systems.
Featuring advanced vacuum interruption technology and mechanical safety interlocking, the ZN153-12 ensures fast fault clearing, reliable isolation, and prevention of incorrect operations. Its space-saving design and high operational stability make it widely used in indoor switchgear, substations, industrial power systems, and applications requiring efficient maintenance, high safety standards, and long-term reliable performance.
Get a QuoteOverview
The ZN153-12 Three-Position Integrated Vacuum Circuit Breaker is a 12kV indoor medium-voltage switching device designed for metal-enclosed switchgear applications. By integrating circuit breaking, isolation, and grounding functions into a single compact unit, it provides reliable operation, improved safety, and simplified maintenance for modern power distribution systems.
Featuring an optimized integrated structure, the ZN153-12 reduces installation space requirements while enhancing operational reliability and safety interlocking performance. It is widely used in indoor switchgear systems, substations, industrial power distribution, and applications requiring compact design, high protection standards, and compliance with international electrical requirements.
Features
The ZN153-12 Three-Position Integrated Vacuum Circuit Breaker combines advanced vacuum switching technology with an integrated three-position mechanism, providing safe, reliable, and space-efficient solutions for indoor medium-voltage switchgear applications.
- Integrated Three-Position Switching Function
Combines ON, OFF, and Grounding operations in a single mechanism, simplifying system design and improving operational safety. - Fully Enclosed Indoor Design
Designed for installation in metal-clad medium-voltage switchgear, providing reliable protection and stable performance in indoor environments. - Compact and Space-Saving Structure
The integrated design reduces installation space requirements while improving switchgear layout flexibility. - Advanced Vacuum Interruption Technology
Utilizes vacuum arc extinguishing technology to achieve fast and reliable current interruption, ensuring long electrical life and low maintenance requirements. - Compliance with International Standards
Designed according to GB1984, IEC 62271-100, and related international electrical standards to ensure reliable quality and performance. - High Mechanical Durability
Suitable for frequent switching operations, offering long-term operational stability and dependable service life. - Mechanical Safety Interlocking
Built-in interlocking mechanisms prevent incorrect operation between switching and grounding positions, enhancing personnel and equipment safety.
Technical Data
| Item | Unit | Parameter |
| Rated Voltage | kV | 12 |
| Rated Frequency | Hz | 50 |
| Rated Current | A | 630 / 1250 |
| Rated Short Circuit Breaking Current | kA | 25 / 31.5 |
| Rated Short-Circuit Making Current | 25 / 31.5 | |
| Rated Short-Time Withstand Current(4s) | 4 | |
| Mechanical life | Times | 10000 |
| Electrical Life | / | 30 full short-circuit interruptions |
| Insulation Level | kV | Power frequency withstand 42kV, lightning impulse 75kV |
Typical Applications
The ZN153-12 Three-Position Integrated Vacuum Circuit Breaker is designed for safe and reliable operation in various indoor medium-voltage power distribution applications.
- Industrial Medium-Voltage Switchgear
Provides reliable switching, isolation, and grounding functions for industrial power distribution systems requiring high operational safety. - Data Centers and Commercial Facilities
Suitable for critical power infrastructure where compact design, reliable protection, and continuous operation are essential. - Utility Distribution Substations
Supports safe control and protection in indoor substations and metal-enclosed switchgear systems. - Renewable Energy Integration Systems
Used in solar and wind power projects for reliable medium-voltage switching and grid connection applications. - International Power Projects
Ideal for export projects requiring compliance with IEC standards and high-performance medium-voltage equipment.
Certifications and Compliance
The ZN153-12 is designed and manufactured according to recognized electrical standards to ensure reliable performance and international compatibility.
- GB1984 – Chinese standard for AC high-voltage circuit breakers
- IEC 62271-100 – International standard for AC high-voltage circuit breakers
- Export configurations available to meet different market requirements, including IEC, UL, and ANSI-related applications.
Advantages for Export Projects
- International Standard Compliance
Designed to meet global electrical requirements, supporting overseas project applications. - Flexible Switchgear Integration
Compact integrated structure allows adaptation to various medium-voltage metal-enclosed switchgear configurations. - Efficient Manufacturing and Delivery
Optimized production processes provide competitive lead times and cost-effective solutions. - Professional Export Support
Technical documentation and certification assistance are available to support international installation and project requirements.
