JN15-12 Indoor High-Voltage Grounding Switch

🛡️ Reliable Indoor Grounding Switch for MV Protection

The JN15-12 indoor grounding switch is a 12kV manually operated earthing device designed for medium voltage switchgear systems. It provides a visible, secure, and fast grounding connection to protect personnel and equipment during maintenance, inspection, and emergencies. Widely used in indoor RMUs, metal-clad switchgears, and compact substations, the JN15-12 is compliant with IEC 62271-102.

⚙️ Technical Specifications

Parameter	Value
Model	JN15-12
Rated Voltage	12kV
Rated Current	630A / 1250A
Rated Short-Time Current	20kA / 4s
Peak Withstand Current	50kA
Insulation Level	42kV (1min) / 75kV (impulse)
Mechanical Life	>2000 operations
Installation Method	Indoor wall or panel mounted
Applicable Standard	IEC 62271-102, GB/T 1985

✅ Product Features

• Safe and Visible Earthing
  Ensures reliable mechanical locking and visible disconnection.

• Compact Design for Switchgear Cabinets
  Ideal for RMUs and indoor SF6 or vacuum switchgear compartments.

• High Mechanical Endurance
  Designed for long life under frequent operation and harsh environments.

• Multi-Mounting Compatibility
  Side-wall, back-panel, or custom bracket options available.

• Arc-Proof and Fault-Tolerant
  Withstands short-circuit conditions up to 20kA for 4 seconds.

🏢 Typical Application Scenarios

• Indoor switchgear rooms (11kV or 12kV systems)

• Wind/solar compact substations

• Metal-enclosed RMUs (ABB SafeRing, Schneider RM6 alternatives)

• Urban distribution networks

• Mining substations and tunnel electrification

🌍 Verified User Reviews

🔹 Robert L. – Substation Engineer, ENEL (Italy)
"Solid grounding performance with quick installation—fits perfectly inside our GIS panels."

🔹 Matthew G. – Utility Specialist, Duke Energy (USA)
"We’ve used the JN15-12 model across several indoor substations—great reliability and standard compliance."

🔹 Annie T. – Lead Engineer, Scottish Power (UK)
"Very compact footprint. Mechanical interlocks are robust and reduce operator error."

🔹 Fred B. – Switchgear Integrator, VEO Oy (Finland)
"Ideal for Nordic switchgear rooms. Works well with 630A VCBs and busbars."

🔹 Ali N. – Project Manager, DEWA (UAE)
"Withstood 18kA fault without failure. We’ve now specified JN15-12 as standard in 12kV design packs."

❓ FAQ – Indoor Earthing Switch

• What’s the main function of the JN15-12 grounding switch?
It provides a safe and visible means to ground high-voltage circuits during shutdowns or fault conditions.

• Can it be integrated into compact RMU designs?
Yes. Its size and mounting configuration suit indoor modular or wall-mounted switchgear.

• Does it support interlocking with VCBs?
Absolutely. It supports mechanical interlock systems with VCB or LBS mechanisms.

• What’s the short-circuit withstand level?
Rated up to 20kA for 4 seconds, and peak current of 50kA.

• Is maintenance required?
Minimal. Periodic visual inspection and lubrication are recommended after 1000 operations.

📞 Contact Us for Technical Drawings or Custom Configurations

Thor – Electrical Engineer, Wei Shoe Elec
📞 Tel: +86-0577-62788197
📱 WhatsApp: +86 159 5777 0984
📧 Email: thor@weishoelec.com

Send us your switchgear cabinet drawings, and we’ll match the ideal grounding solution for your system.