12kV indoor high-voltage load break switch

Product Overview

The FN5 - 12 indoor AC high - voltage load break switch (hereinafter referred to as the load break switch) is suitable for AC 50Hz, 12kV networks. It is used for breaking load current and closing short - circuit current. The load break switch with a fuse can cut off short - circuit current and be used as a protection switch.

This load break switch can be equipped with the CS6 - 1 manual operating mechanism and the special CS manual operating mechanism for this product.

Key Features

• Precise Current Control：Suitable for 12kV, 50Hz AC systems. It can stably break load current and close short - circuit current, ensuring normal operation and maintenance of the power grid as well as emergency operations during faults.

• Extended Protection Function：When paired with a fuse, it can cut off short - circuit current and act as a protection switch, providing overload and short - circuit dual protection for power equipment and simplifying the protection levels of the distribution network.

• Wide Scene Adaptability：Focused on indoor 12kV AC networks. It is suitable for typical indoor power distribution scenarios such as ring main units and box - type substations, meeting the needs of distribution network construction.

• Flexible Mechanism Configuration：Supports the CS6 - 1 general manual operating mechanism and can also be adapted to the special CS mechanism, compatible with different operating habits and equipment matching requirements.

• Mature Technical Architecture：Iterated based on the classic FN5 - 12 model. It has a compact structure, stable arc - extinguishing performance, high long - term operation reliability, and reduces operation and maintenance costs.

Technical Parameters

Technical Parameters of Fuse

Operating Environmental Conditions

• Altitude: Not exceeding 1000m;

• Ambient Air Temperature: Upper limit +40°C, Lower limit -25°C (Not lower than -5°C for motor - operated mechanisms);

• Relative Humidity: Daily average not greater than 95%, Monthly average not greater than 90% (+25°C);

• Ambient air should be free from obvious pollution by corrosive or flammable gases, water vapor, etc.;

• No frequent severe vibration.