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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

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