JN15-12 indoor 12KV HV earthing switch for switchgear 12 KV HV ground switch

Introducing the JN15-12 Indoor High-Voltage Earthing Switch, a versatile solution suitable for a range of applications. This switch is designed for indoor use within 3~12KV three-phase AC 50(60)Hz power systems and various types of high-voltage switchgear. It can also serve as a reliable grounding option during high-voltage electrical equipment maintenance.


Key Features:

  1. Versatile Application: Suitable for indoor 3~12KV three-phase AC 50(60)Hz power systems and various high-voltage switchgear.
  2. Grounding During Maintenance: Ideal for use as an earthing switch during maintenance of high-voltage electrical equipment.
  3. Compact and Lightweight: Features a simple and compact structure, making it easy to install and handle. It is lightweight for convenient operation.
  4. Flexible Operation: Offers flexible and easy-to-use operation, ensuring efficient functionality.
  5. Stability: Provides good dynamic and thermal stability for reliable performance.


  • Main Structure: Includes a bracket, grounding knife assembly, static contact, sensor, shaft, inflection arm, pressure spring, conductive casing, and soft connection.

Working Principle:

  • Closing Operation: When closing the earth switch, the torque overcomes resistance torque, driving the inflection arm to rotate and quickly close the earth switch. The grounding knife securely contacts the static contact.
  • Opening Operation: When opening the switch, the moment of action rotates the inflection arm in the opening direction, preparing the grounding knife for the next closing.
  • Independent Speed: The grounding switch operates independently of the operator’s speed.


  1. Advanced Design: Offers an advanced design and consistent performance.
  2. Simple Installation: Features a simple structure for easy installation and adjustment.
  3. Fast Operation: Provides fast breaking and making capability.
  4. Attractive Appearance: Boasts a handsome appearance and delicate craftsmanship.
  5. Usability: Can be operated from both sides (right and left).

Environmental Conditions:

  • Applicable Conditions: Suitable for altitudes up to 1000m above sea level, ambient temperatures ranging from -10°C to +40°C, and relative humidity not exceeding 95% on a daily average or 90% on a monthly average. Suitable for seismic intensity not exceeding 8 degrees.
  • Not Suitable for: Unsuitable for locations with gases, vapors, chemicals, smoke, dust, dirt, or explosive erosive substances that affect insulation and conductivity. Also not suitable for sites with frequent and severe vibrations.

Experience the reliability and efficiency of the JN15-12 Indoor High-Voltage Earthing Switch for your electrical applications.

JN15-12 indoor 12KV HV earthing switch for switchgear 12 KV HV ground switch插图4

JN15-12 indoor 12KV HV earthing switch for switchgear 12 KV HV ground switch插图5