JN15-24/JN500-24 Indoor High Voltage Earthing Switch

The JN15-24/630 Indoor High Voltage Earthing Switch is a critical safety device designed for 24kV indoor medium-voltage switchgear, including KYN withdrawable switchgear, Ring Main Units (RMUs), and other indoor distribution systems. It provides reliable grounding during equipment inspection and maintenance by safely discharging residual electrical charges and preventing accidental energization, ensuring maximum protection for maintenance personnel and electrical equipment.

Designed with a compact structure, dependable operating mechanism, and high-performance conductive components, the JN15-24/630 offers excellent electrical and mechanical performance. It is an ideal grounding solution for utility substations, industrial power distribution systems, commercial facilities, renewable energy projects, and infrastructure projects where operational safety and long-term reliability are essential.

Its robust mechanical structure, high short-circuit withstand capability, and maintenance-friendly design make it a dependable choice for modern medium-voltage power distribution systems.

The JN15-24/630 Indoor Earthing Switch is engineered to operate reliably under various indoor installation conditions.

• Altitude: ≤1000 m
• Ambient Temperature: -10°C to +40°C
• Relative Humidity: Daily average ≤95%, Monthly average ≤90%
• Installation Environment: Free from explosive gases, corrosive substances, and conductive dust
• Mechanical Conditions: No severe vibration or impact
• Seismic Resistance: Up to Grade 8

• Designed for 24kV indoor medium-voltage switchgear
• Reliable grounding protection during maintenance
• High-strength epoxy resin insulation
• High-purity T2 copper conductive system
• Compact structure with easy installation
• Long mechanical service life
• Smooth and stable operating mechanism
• Low maintenance requirements
• Compatible with various switchgear systems
• OEM & customized solutions available

Premium epoxy resin insulators provide excellent electrical insulation, outstanding resistance to aging, moisture, and contamination, ensuring stable operation in demanding environments.

The conductive components are manufactured using high-quality T2 copper, providing low contact resistance, excellent conductivity, and dependable grounding performance.

The precision operating mechanism ensures smooth opening and closing actions with excellent mechanical stability and a service life exceeding 2,000 operations.

The earthing switch effectively discharges residual voltage before maintenance, significantly reducing the risk of accidental Electric discharge and improving personnel safety.

Optional live-line indication devices, interlocking mechanisms, operating shafts, and customized mounting dimensions are available to suit different switchgear designs.

The Indoor High Voltage Earthing Switch is installed inside medium-voltage switchgear to provide a safe grounding path during maintenance.

When maintenance is required, the earthing switch connects the electrical circuit directly to ground, safely discharging any residual electrical energy and eliminating hazardous voltages. This ensures that maintenance personnel can work safely after the circuit has been isolated.

Its high short-circuit making capacity enables the switch to withstand fault conditions while maintaining reliable grounding performance. Combined with mechanical interlocking systems, it helps prevent incorrect operating sequences and further enhances system safety.

The JN15-24/630 Indoor High Voltage Earthing Switch is widely used in various medium-voltage power distribution systems, including:

• Ring Main Units (RMU)
• KYN Withdrawable Switchgear
• Medium Voltage Switchgear Panels
• Utility Substations
• Industrial Manufacturing Plants
• Commercial Buildings
• Renewable Energy Projects
• Solar Power Stations
• Wind Farms
• Data Centers
• Railway Power Supply Systems
• Airport Distribution Systems

The product can be configured to meet the technical requirements of various utility companies, including projects complying with Indonesian PLN specifications.

Changyun Intelligent specializes in the manufacturing of medium-voltage power distribution equipment and electrical components. With extensive industry experience, advanced production facilities, and strict quality management, we are committed to delivering reliable products and professional technical support to customers worldwide.

Why customers choose us:

• More than 17 years of manufacturing experience
• Professional OEM & ODM services
• Strict quality control throughout production
• Factory-direct competitive pricing
• High-quality raw materials
• Stable product performance
• Fast production and delivery
• Professional export support
• Responsive technical assistance
• Long-term cooperation with global partners

Every Indoor High Voltage Earthing Switch undergoes comprehensive factory inspection before delivery to ensure reliable performance and compliance with quality requirements.

Our quality control process includes:

• Incoming raw material inspection
• Precision machining inspection
• Assembly inspection
• Mechanical operation testing
• Contact resistance testing
• Power-frequency withstand voltage testing
• Final appearance inspection
• Packaging inspection before shipment

Each product is carefully tested to ensure consistent quality, operational reliability, and long service life.

Changyun Intelligent offers flexible OEM and customized manufacturing services to meet different project and market requirements.

Customization options include:

• Product logo and branding
• Nameplate design
• Mounting dimensions
• Operating shaft length
• Interlocking mechanism
• Live-line indication sensors
• Customized packaging
• Technical documentation

Our engineering team works closely with customers to provide tailored solutions for utility companies, switchgear manufacturers, distributors, and EPC contractors.

An indoor high voltage earthing switch is a safety device used in medium-voltage switchgear to connect electrical circuits to ground during maintenance. It safely discharges residual electrical energy and protects maintenance personnel from accidental Electric discharge.

An earthing switch provides a reliable grounding path after the circuit has been isolated. It eliminates dangerous residual voltages and significantly improves maintenance safety.

Yes. The JN15-24/630 is suitable for Ring Main Units (RMUs), KYN withdrawable switchgear, and various indoor medium-voltage switchgear systems.

Yes. We provide OEM and ODM manufacturing, including customized branding, mounting dimensions, interlocking systems, and packaging.

Yes. Installation dimensions, operating shaft length, and mechanical configurations can all be customized according to customer requirements.

The mechanical endurance exceeds 2,000 operations under normal operating conditions. With proper installation and maintenance, the product provides reliable long-term performance.

Standard production lead time is generally 20–35 days after order confirmation, depending on order quantity and customization requirements.

Yes. Our engineering team offers product selection assistance, technical consultation, installation guidance, and after-sales support for customers worldwide.

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