GN30-12 Rotary Indoor High Voltage AC Isolating Switch – 12kV Three-Phase Disconnector with Rotary Contact Knife for Power System Switching
The GN30-12 is a new type of rotary indoor high-voltage isolating switch designed for power systems with a rated voltage of 10kV to 12kV AC 50Hz and below. Featuring a unique rotary contact knife design, the switch is engineered to connect and disconnect circuits under voltage but no-load conditions. Its compact structure utilizes a three-phase common chassis with two sets of insulators fixed on the upper and lower planes, significantly saving installation space while providing strong insulation performance. Fully compliant with the GB1985 standard, the GN30-12 is easy to install and adjust, making it an ideal choice for use within high-voltage switchgear or as a standalone unit.
GN30-12 Rotary Indoor High Voltage AC Isolating Switch (12kV)
Product Overview
The GN30-12 is a state-of-the-art rotary indoor high-voltage isolating switch designed for power systems with a rated voltage of 12kV AC 50Hz and below. This innovative switch utilizes a rotary contact knife mechanism to perform circuit switching under voltage but no-load conditions. Its unique structural design features a three-phase common chassis with insulators and contacts fixed on both the upper and lower planes, allowing for a highly compact installation footprint without compromising insulation strength. Fully compliant with GB198589 (AC High Voltage Isolating Switch and Grounding Switch) standards, it is an ideal solution for modern high-voltage switchgear systems.
Core Features & Technical Advantages
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Innovative Rotary Mechanism: Employs a rotary contact knife for stable and efficient opening and closing operations.
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High-Quality Insulation: Manufactured with durable, pollution-resistant ceramic insulators that require no frequent cleaning.
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Advanced Contact Technology: Adopts new technology silver brazing contacts, ensuring low contact resistance, superior electrical conductivity, and high mechanical strength.
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Space-Saving Design: The dual-plane insulator arrangement makes the unit exceptionally compact, ideal for space-constrained indoor installations.
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Robust Hardware: Built with sturdy, lightweight, and high-quality hardware designed for long-term industrial use.
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Safety Options: Available in the GN30-12D variant, which includes an integrated grounding device to meet the safety requirements of diverse power systems.
Technical Specifications
| Item | Unit | Data |
| Rated Voltage | kV | 12 |
| Rated Current Options | A | 400, 630, 1000, 1250 |
| 4s Rated Short-time Withstand Current | kA | 12.5 – 31.5 (depending on model) |
| Rated Peak Withstand Current | kA | 31.5 – 80 (depending on model) |
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