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

Hot Products

  • HV Indoor Vacuum Circuit Breaker

    HV Indoor Vacuum Circuit Breaker

    SanGao's HV Indoor Vacuum Circuit Breaker is a key protection and control device in the power system, mainly installed in indoor environments. Under dispatch instructions, it safely closes (connects) or opens (disconnects) high-voltage circuits to operate equipment.
  • Air Insulated Grounding Disconnector Switch for Distribution Cabinet

    Air Insulated Grounding Disconnector Switch for Distribution Cabinet

    SanGao, a China-based manufacturer offering Air Insulated Grounding Disconnector Switch for Distribution Cabinet, develops targeted grounding hardware for indoor medium-voltage distribution cabinets. The air-insulated design features a straightforward mechanical layout that eases inspection and servicing while maintaining stable grounding output, cutting operational difficulties and eliminating potential electrical risks for end users.
  • Outdoor Grounding Switch

    Outdoor Grounding Switch

    What truly defines a trustworthy outdoor grounding switch? Is it durability in harsh environments, mechanical robustness, or stability under fault conditions? Using SanGao's outdoor grounding switch, the answer is clear - it offers all these advantages in a compact and reliable design. This product can ensure reliable grounding of high-voltage outdoor electrical equipment, protect personnel and infrastructure, and improve the safety and stability of the power system.
  • Ceramic Porcelain Gapless Metal-Oxide Lightning Surge Arrester

    Ceramic Porcelain Gapless Metal-Oxide Lightning Surge Arrester

    Searching for a dependable Ceramic Porcelain Gapless Metal-Oxide Lightning Surge Arrester China factory? Sangao engineers and produces this rigid high-stability system for electrical contractors who intend to buy heavy-duty surge protection arrays. This gapless protection device provides stable protection performance for critical high-voltage transmission lines plagued by high winds and ice storms.
  • 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 Circuit Breaker

    High Voltage Circuit Breaker

    SanGao High Quality High Voltage Circuit Breaker is an outdoor distribution equipment with a rated voltage of 12kV and three-phase AC 50Hz. It is mainly used for breaking and closing load current, overload current, and short-circuit current in power systems. It is suitable for distribution control in substations, industrial and mining enterprises, and urban and rural power grids, especially for frequent operation scenarios. This product complies with GB1984-2003, DL/T 402-2007, and IEC60056 technical standards, and supports remote monitoring and automation control.SanGao has gradually become a high quality supplier in China's High Voltage Circuit Breaker industry. They are widely used in urban and rural power grid renovation, transmission and distribution engineering, sewage treatment, hydropower stations, wind power plants, metallurgical industry, petrochemical industry, mining, railways, residential area construction, and power engineering projects. Normal operating environment ◆ Surrounding air temperature: -30 ℃~+60 ℃; ◆ Altitude: not exceeding 3000m; The wind speed does not exceed 34m/s; Vibration or ground motion from outside the switchgear and control equipment can be ignored; Pollution level: Level IV; Storage temperature: -40 ℃~+85 ℃. Characteristics of switch structure 1. The High Voltage Circuit Breaker features a three phase pillar structure that is maintenance free, small in size, lightweight, and has a long lifespan. 2. The circuit breaker adopts a fully enclosed structure with good sealing performance, which helps to improve moisture proof and anti condensation performance, especially suitable for use in cold or humid areas. 3. The three-phase pillars and current transformers adopt imported outdoor epoxy resin solid insulation, or indoor epoxy resin wrapped with organic silicon rubber solid insulation; It has the characteristics of high and low temperature resistance, UV resistance, and aging resistance.

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