FZN61-12 Indoor High Voltage Vacuum Load Break Switch
FZN61-12 Indoor High Voltage Vacuum Load Break Switch is a compact and reliable switching device designed for 12kV medium-voltage power distribution systems. It uses vacuum interruption technology to provide safe load switching, reliable arc extinction, and effective circuit isolation.
With a space-saving structure and dependable operating performance, the FZN61-12 is suitable for indoor switchgear, RMUs, urban substations, industrial facilities, and data centers. It offers a practical solution for applications requiring safe switching, low maintenance, and long-term operational reliability.
Get a QuoteOverview
The FZN61-12 Indoor Load Break Switch is a reliable switching device designed for 12kV medium-voltage power distribution systems. It provides safe load interruption and circuit isolation while offering dependable arc-extinguishing performance, compact construction, and long service life.
With its space-saving design and reliable switching capability, the FZN61-12 is suitable for indoor switchgear cabinets, ring main units (RMUs), urban substations, industrial facilities, and data centers. It provides a practical solution for medium-voltage systems requiring safe switching, reliable isolation, and stable long-term operation.
Technical Data
| Item | Unit | Parameter | |
| Rated Voltage | kV | 12 | |
| Rated Current | A | 630 / 1250 | |
| Power Frequency Withstand Voltage | kV | 42 | |
| Lightning Impulse Withstand Voltage | 75 | ||
| Breaking Current | kA | 20 | |
| Making Current | 50 | ||
| Mechanical Life | Times | ≥5000 | |
Overall and mounting dimensions(mm)
Applications
The FZN61-12 Indoor Load Break Switch is designed for reliable switching and isolation in 12kV medium-voltage distribution systems and is suitable for:
- Medium-Voltage Switchgear Cabinets – Provides safe load switching and circuit isolation.
- Ring Main Units (RMUs) – Compact structure allows convenient integration into RMU configurations.
- Industrial Power Distribution – Supports reliable power control in manufacturing plants, motor control centers, and industrial facilities.
- Urban Substations – Suitable for compact indoor substations where reliable switching and space efficiency are important.
- Data Centers – Helps maintain stable medium-voltage power distribution and minimize operational interruptions.
- Renewable Energy Systems – Applicable to distribution systems for solar, wind, and battery energy storage projects.
Product Advantages
- Safe Load Breaking – Reliable arc-extinguishing performance enables safe interruption of load currents.
- Compact Design – Space-saving construction is suitable for confined switchgear installations.
- Easy Installation and Maintenance – Simplified structure helps reduce installation and maintenance requirements.
- Reliable Performance – Designed and tested according to applicable IEC 62271-103 requirements.
- Flexible Operation – Supports manual operation and can be configured for remote or motorized control where required.
Installation Guidelines
1. Preparation
- Confirm that the switch ratings and technical specifications match the system requirements.
- Follow appropriate electrical safety and lockout/tagout procedures before installation.
- Ensure the installation environment is clean, dry, and adequately ventilated.
2. Mechanical Installation
- Install the load break switch inside the designated switchgear compartment while maintaining the required clearances.
- Secure mounting bolts and mechanical connections according to the manufacturer’s specified requirements.
3. Electrical Connections
- Connect the main conductors and tighten terminals according to the specified torque values.
- Complete control and auxiliary wiring for motorized operation or interlocking functions when applicable.
- Verify that the grounding connection is properly installed.
4. Commissioning and Testing
- Perform insulation resistance and other required electrical tests.
- Check manual and remote operating functions where applicable.
- Verify the mechanical and electrical interlocking system before energization.
- Confirm that all switching positions operate correctly.
Compliance & Certification
- Designed in accordance with IEC 62271-103 requirements.
- Factory testing and applicable type-test documentation can be provided according to the product configuration.
- Manufactured under an ISO 9001:2015 quality management system.
Note: Actual installation clearances, torque values, test procedures, and operating parameters should follow the specific FZN61-12 technical documentation supplied with the product.
