JN22B-40.5 Indoor Grounding Switch for 40.5kV Switchgear

🧲 Secure Grounding for High-Voltage MV Panels in Indoor Environments

The JN22B-40.5 indoor high-voltage grounding switch is designed for reliable grounding in 40.5kV power distribution systems. Installed inside metal-clad switchgear or indoor gas-insulated enclosures, it ensures safety by providing a visible and mechanically interlocked ground connection during equipment maintenance or system faults.

This model is particularly suited for medium-voltage substations, industrial switchboards, and power plant control rooms, where safe isolation and compliance with IEC standards are essential.

⚙️ Technical Specifications

🏭 Common Applications

• MV Switchgear Panels (KYN61-40.5, XGN2-40.5, etc.)
  Grounding and maintenance interlocking inside air-insulated systems.

• Power Plants & Industrial Facilities
  Safeguards maintenance teams during scheduled shutdowns.

• Urban Distribution Substations
  Compact grounding solution integrated into indoor RMU or GIS bays.

🔒 Why Choose JN22B-40.5?

• Reliable Safety Interlocking： Mechanical locking prevents misoperation during energization.

• Compact Profile： Designed to fit 40.5kV switchgear chambers without modifying the structure.

• Strong Short-Circuit Capability： Handles peak fault currents up to 80kA.

• Smooth Manual Operation： Spring-assisted mechanism for fast and secure grounding.

✅ Real Customer Feedback

🔹 Lucas A. – Switchgear Supervisor, E.ON Germany
"We integrated the JN22B into our ABB-compatible KYN panels without modification. Operation is smooth and safe."

🔹 Clara M. – Plant Manager, ArcelorMittal Spain
"It meets high fault tolerance needs in our 35kV steel mill. The grounding lockout is very reliable."

🔹 Jake T. – Electrical Engineer, S&C Electric USA
"Straightforward to install and well-built. Passed high voltage test with no issue."

🔹 Samuel R. – Maintenance Chief, Hydro Québec
"Manual operation remains effective even in dusty environments. Ideal for long-term reliability."

🔹 Kevin H. – Projects Head, Eskom South Africa
"Strong mechanical build and interlock coordination with VS1 and ZN85 breakers."

❓FAQ – JN22B-40.5 Grounding Switch

• Is it compatible with KYN61-40.5 switchgear?
Yes, it is specifically designed for KYN61-40.5 and similar panels.

• How is grounding confirmed visually?
It includes a visible contact blade position indicator.

• Can this be automated?
No, it is strictly manual to ensure safety through operator presence.

• What standard is the design based on?
Designed in compliance with IEC 62271-102 and GB 1985.

• Does it include an interlock with the circuit breaker?
Yes, it has mechanical interlock ports to coordinate with VS1, ZN85, or ZW7 breakers.

📩 Request Technical Drawings or Quotation

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