10KV Indoor High Voltage Load Break Grounding Disconnector Switch manufactured by SanGao fits perfectly for industrial power distribution rooms, transformer substations and various medium-voltage engineering projects. Developed by a dedicated high-voltage apparatus producer, this all-in-one unit integrates load breaking, isolation and earthing modules, delivering safer daily operation and simplified maintenance amid complex indoor power operating conditions.
In a 10KV distribution network, operators often need to perform maintenance on transformers, feeders, and switchgear components. A normal isolation device can separate circuits, but it may not provide load switching capability or grounding protection.
This 10KV Indoor High Voltage Load Break Grounding Disconnector Switch is designed as an intermediate switching device between a circuit breaker and an isolation switch. It uses a simplified arc-extinguishing structure to complete load-breaking operations and integrates an earth switch to improve maintenance safety.
Main functions include:
• Disconnecting and connecting load currents under rated conditions
• Providing visible electrical isolation during maintenance
• Creating a grounding path for safer service operations
• Reducing the number of separate devices required inside switchgear systems
For engineering contractors, the integrated structure helps simplify system design and makes operation procedures easier to manage.
Space utilization and operating reliability are important concerns in 10KV Indoor High Voltage Load Break Grounding Disconnector Switch. SanGao develops this product with a compact mechanical structure suitable for indoor medium voltage applications.
The main design advantages include:
Integrated Grounding Protection
The built-in earth switch allows maintenance personnel to complete grounding procedures after circuit isolation, improving safety during equipment inspection.
Reliable Mechanical Operation
The operating mechanism is designed for stable opening and closing actions. Accurate mechanical transmission helps reduce operation problems caused by mechanism wear or incorrect movement.
Simplified Arc Extinguishing Design
The optimized arc-extinguishing structure supports reliable load interruption while maintaining a compact equipment size.
Suitable for Existing Switchgear Layouts
The compact construction makes it easier to integrate into indoor distribution systems where installation space is limited.
| Item | Specification |
|---|---|
| Model | VNA-L-10/630-20zp |
| Product category | Switchgear & Medium Voltage 10KV indoor load break switch (LBS) |
| Rated voltage | 10KV |
| Rated current | 630A |
| Breaking capacity | 20kA (based on model suffix) |
| Application | Indoor medium-voltage distribution systems |
| Main function | Load breaking, isolation, and grounding protection |
The specifications can be adjusted according to different system requirements. Customers can contact SanGao for detailed technical documentation before project confirmation.
The application value of this 10KV Indoor High Voltage Load Break Grounding Disconnector Switch comes from combining load interruption and grounding protection in one unit.
10KV Industrial Substations
Factories with 10KV incoming power systems often require safe switching equipment for transformer maintenance, feeder inspection, and power distribution management.
This design helps operators isolate sections of the network without installing multiple independent devices.
Distribution Switch Rooms
In commercial buildings, infrastructure projects, and industrial facilities, indoor switch rooms usually have limited installation space. The compact structure helps optimize cabinet arrangements.
Power Grid Renovation Projects
During urban and rural grid upgrades, contractors need equipment that can improve safety without requiring major changes to existing distribution structures.
Transformer and Feeder Protection Systems
The combination of load breaking and grounding functions makes it suitable for applications where maintenance safety and circuit control are both required.
For a 10KV Indoor High Voltage Load Break Grounding Disconnector Switch, mechanical accuracy and electrical performance directly affect field operation safety. SanGao focuses on controlling the manufacturing details that influence product reliability.
The production process includes:
Mechanical Assembly Inspection
The operating mechanism, transmission components, and switching actions are checked to ensure smooth operation before delivery.
Electrical Performance Testing
Testing equipment is used to verify electrical characteristics and ensure the product meets project requirements.
Component Quality Control
Key components related to insulation, contacts, and mechanical operation are inspected during production.
SanGao Electric operates a manufacturing facility in Liushi, China, integrating R&D, design, production, testing, and sales.
Factory capability includes:
• Factory area: 10 mu
• Building area: 10,000 square meters
• Employees: 120
• Middle and senior professional technicians: 20
• Registered capital: 81.68 million yuan
• Total assets: approximately 200 million yuan
The company applies:
• ISO9001:2008 quality management system
• ISO14001 environmental management system
• OHSMS 18001 occupational health and safety management system
These systems support consistent control of manufacturing procedures from production to final inspection.
A standard isolation switch mainly provides circuit separation under no-load conditions. This equipment additionally provides load-breaking capability and grounding protection.
Yes. After the circuit is safely isolated, the integrated earth switch can provide grounding protection to support maintenance work.
Yes. The 10KV Indoor High Voltage Load Break Grounding Disconnector Switch is designed for indoor 10KV medium voltage distribution applications, including industrial substations and power distribution rooms.
The 20kA value indicates the breaking capacity according to the model suffix, representing the designed interruption capability under specified conditions.