English
Home > Products > Indoor High Voltage Switchgear Equipment

China Indoor High Voltage Switchgear Equipment Manufacturer, Supplier, Factory

Ensuring the safety and reliability of your high voltage distribution network requires robust isolation and disconnection solutions. For applications demanding dependable load-breaking and visible isolation points, our comprehensive range of Indoor High Voltage Switchgear Equipment is engineered for superior performance. Our Indoor HV Safety Disconnect Switch provides a crucial safety interface, allowing for secure isolation of circuits for maintenance. For fundamental circuit segmentation, the Indoor HV Isolation Switch offers reliable off-load isolation. We provide tailored solutions for specific medium-voltage requirements, including the widely used Indoor Electrical Disconnect Switch 11kV and the higher-capacity Indoor Electrical Disconnect Switch 33kV, both designed for integration into indoor switchgear assemblies.


The core of any effective power management system lies in its switching apparatus. Our Indoor High Voltage Switchgear Equipment is meticulously designed to meet rigorous international standards, providing a secure and durable solution for electrical isolation and circuit control in protected indoor environments. Constructed from high-grade materials and utilizing advanced contact technology, this equipment ensures minimal electrical losses, high short-circuit withstand capability, and long-term operational stability. It serves as a critical component in substations, industrial plants, and large commercial facilities, where safety and uninterrupted power supply are paramount.

Key Specifications & Technical Parameters

Our Indoor High Voltage Switchgear range is defined by precise engineering and adherence to performance benchmarks. Below are the primary operational and construction parameters:

  • Rated Voltage: Up to 40.5 kV
  • Rated Normal Current: From 630A to 4000A
  • Short-Time Withstand Current: Typically 31.5 kA / 3s or 40 kA / 3s
  • Power Frequency Withstand Voltage: 95 kV (across open contacts) for 1 minute
  • Impulse Withstand Voltage: 215 kV (Lightning)
  • Operating Mechanism: Manual (lever), motor-operated, or pneumatic options available
  • Enclosure Protection: IP2X standard, with higher ratings optional
  • Standards Compliance: IEC 62271-102, IEEE C37.34, and other regional standards

Detailed Product Comparison

Model Series Rated Voltage (kV) Rated Current (A) Short Circuit Current (kA/s) Primary Application
IDS-12 Series 12 1250, 2000 31.5 / 3 General indoor distribution, transformer isolation
IDS-24 Series 24 2000, 2500 31.5 / 3 Industrial plant main feeders
IDS-36 Series 36 2500, 3150, 4000 40 / 3 Heavy industrial & utility substations
MO-IDS Series (Motor-Operated) 12 - 40.5 Up to 4000 As per voltage class Remote-operated & automated switchgear systems

Related Products

Hot Products

  • Outdoor Isolation Switch

    Outdoor Isolation Switch

    SanGao High Quality Outdoor Isolation Switch is a high-performance 12kV AC metal armored switchgear designed specifically for power distribution systems. The device adopts a pull-out structure and complies with GB 3906 and IEC 62271-200 standards. It is suitable for substations, industrial plants, commercial buildings, and renewable energy facilities, with excellent reliability, safety, and intelligent control functions, and can be used for distribution, protection, and management.
  • High Voltage Isolation Switch

    High Voltage Isolation Switch

    SanGao focuses on the research and development of High Voltage Isolation Switch. Our security sensors can reduce costs, improve efficiency, save energy, and promote environmental sustainability. In addition, the grounding switch is used in conjunction with the isolation switch to provide effective grounding/connection, grounding the power-off part of the system. We provide customized professional technical support.
  • Indoor Grounding Switch

    Indoor Grounding Switch

    SanGao is a professinal China quality Indoor Grounding Switch supplier. As an advanced product designed to meet the highest technical standards. This High-performance Indoor Grounding Switch has undergone rigorous evaluation and complies with GB1985 and IEC62271 standards, and is suitable for 3-12kV, three-phase AC 50Hz power systems. Every distribution system must be equipped with protective devices to protect electrical appliances and equipment from the impact of accidents. This Indoor Earthing Switch has short circuit closing capability, which can protect other electrical equipment from potential damage, and can be seamlessly integrated with various medium voltage switchgear. In addition, it is also a key protective component in the maintenance process of medium voltage electrical equipment.
  • 40.5KV Switch Recloser

    40.5KV Switch Recloser

    SanGao durable 40.5KV Switch Recloser is used in 50Hz, 40.5KV AC three phase power systems for breaking and closing load currents, overload currents, and short circuit currents. When used in conjunction with an intelligent controller, it can achieve automatic reclosing function, as well as remote control, telemetry, remote signaling, and remote adjustment.
  • High Voltage Earthing Sswitch with Closing Resistor

    High Voltage Earthing Sswitch with Closing Resistor

    SanGao, a domestic manufacturer High Voltage Earthing Sswitch with Closing Resistor , delivers sophisticated grounding protection hardware compatible with all mainstream high-voltage switchgear and substation layouts. Its built-in closing resistor structure effectively buffer transient electrical shocks during grounding switching, boosting grid operational stability and extending the service life of supporting power equipment.
  • Indoor 10KV Load Break Switch

    Indoor 10KV Load Break Switch

    SanGao Electric is a trusted Chinese manufacturer specializing in high-quality Indoor 10KV Load break switch. Our switches are designed for durability, safety, and reliable performance in power distribution systems. With strong breaking capacity and long service life, they meet strict industry standards. As a competitive supplier, we offer cost-effective solutions without compromising quality. Contact us today for the best pricing and tailored service!
  • Related Blog
  • Reviews

  • Why Is a High Voltage Grounding Switch Essential for Power Systems?

    ​When discussing the reliability and safety of power transmission, the High Voltage Grounding Switch plays a critical role. This device is not just a mechanical component; it is a safeguard for workers, equipment, and the entire network. From my own perspective as someone involved in the industry, I realize that without proper grounding measures, maintenance operations would become highly dangerous and system failures could escalate into large-scale outages. The grounding switch, therefore, is indispensable in ensuring both safety and operational stability.

  • Why Should You Choose an HV Indoor Vacuum Circuit Breaker?

    ​In today's power distribution and transmission systems, safety, efficiency, and reliability are always top priorities. One of the most widely adopted solutions in modern electrical infrastructure is the HV Indoor Vacuum Circuit Breaker. It plays a vital role in ensuring smooth electrical operations while protecting equipment and operators from unexpected failures. Unlike traditional circuit breakers, this device combines advanced technology with high durability, making it suitable for various industrial, commercial, and utility applications.

  • Because focus leads to professionalism.

    The high-voltage disconnector shown in the picture is a specially developed and customized product based on the requirements of our customer from Taiwan Province, China.

  • SANGAO Unveils Voltage Fixed Indoor Vacuum Circuit Breaker for Enhanced Power Distribution

    Zhejiang SanGao Electric Co., Ltd. is a high-tech enterprise specializing in the production of Voltage Fixed Indoor Vacuum Circuit Breaker, which emerged and developed with China's reform and opening up. We can also customize products according to your requirements to achieve a Vacuum Circuit Breaker that meets your standards.

  • The "Guardian" of the Power System - Exploring the Invisible Battlefield of Three-Phase Circuit Breakers

    The moment you flip a light switch, somewhere in the city's power grid, a "current commander" inside a silver metal box—with a response speed of 0.02 seconds—silently protects the lights of countless homes.

  • How Zhejiang SanGao's Electrical Equipment Carried the Mission of Power Supply at the Launch Site

    Twenty years later, this "Product Usage Feedback" with its red seal has long since yellowed, but the message at its conclusion remains resonant: "Adhere to promises, prioritize quality, and build a shield for the nation."

Send Inquiry

X
We use cookies to offer you a better browsing experience, analyze site traffic and personalize content. By using this site, you agree to our use of cookies. Privacy Policy
Reject Accept