JN15-24 Indoor High Voltage AC Earthing Switch – 24kV Grounding Switch with Red Insulation Plates for Distribution Cabinet Protection
The JN15-24 series is a custom-engineered indoor high-voltage earthing switch designed for medium-voltage switchgear and distribution cabinets up to 24kV. This model features advanced red insulation plates that effectively prevent accidental contact with live parts, significantly enhancing operational safety and reliability during equipment maintenance. Equipped with a rapid-closing pressure spring mechanism, the switch’s closing speed is independent of the operator’s manual force, ensuring consistent and reliable performance. Built for durability, it offers excellent dynamic and thermal stability, making it an essential protective component for 24kV power distribution systems.
JN15-24 Indoor High Voltage AC Earthing Switch with Insulation Plate (24kV)
Product Overview
The JN15-24 Series is a specialized indoor high-voltage earthing switch engineered for medium-voltage power distribution systems with a rated voltage of 24kV. This custom model is specifically designed for use in distribution cabinets and KYN28 series metal-clad switchgear, providing an essential layer of safety through enhanced insulation protection. Its primary role is to ensure reliable earthing performance during critical equipment maintenance and inspection.
Core Features & Technical Advantages
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Enhanced Safety with Insulation Plates: Equipped with specialized red insulation plates that effectively prevent accidental contact with live parts, significantly improving overall operational safety.
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High-Conductivity Copper Contacts: Features premium copper contacts that ensure a stable electrical connection and a strong current-carrying capacity for high-demand environments.
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Advanced Closing Mechanism: Utilizes a pressure spring energy storage system where the closing speed is completely independent of manual operation speed, ensuring rapid and reliable contact engagement.
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Robust Mechanical Design: Built with a compact and simple structure that is easily adaptable to various switchgear models and offers intuitive manual operation.
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Verified Industrial Performance: The switch’s stability and long-term reliability have been verified through repeated operation tests.
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Visual Status Check: Includes a clear mechanical indicator (Green “O”) located on the front of the mechanism for quick identification of the open/closed position.
Technical Specifications
| Item | Unit | Data |
| Rated Voltage | kV | 24 |
| Rated Short-time Withstand Current | kA | 31.5 |
| Rated Short-circuit Duration | s | 4 |
| Rated Short-circuit Making Current | kA | 80 |
| PF Withstand Voltage (1 min) – Earth | kV | 65 |
| Lightning Impulse Withstand Voltage | kV | 125 |
| Mechanical Endurance | cycles | 2000 |
Applications
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Medium-voltage metal-clad switchgear (KYN28 series)
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Ring main units (RMU) and gas-insulated switchgear (GIS)
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Industrial power distribution systems and substations
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Urban and rural power grids
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