No. 335, Qiligang Binjiang Avenue, Liushi Township, Yueqing Town, Wenzhou City, Zhejiang Province
FN5-12D Series: Indoor High Voltage Load Break Switches | Reliable solution for control and protection of 10 kV distribution systems

 FN5-12D Series: Indoor High Voltage Load Break Switches | Reliable solution for control and protection of 10 kV distribution systems 

2026-04-21

FN5-12D series are indoor high voltage load switches designed specifically for 50Hz 12kV indoor distribution systems. They are widely compatible with major types of ring distribution cabinets such as XGN15-12, and are key control and protection equipment in medium voltage power distribution systems.

The product uses proven gaseous arc extinguishing technology to ensure safe interruption of the rated load current. Models with a built-in grounding switch are equipped with a mechanical interlock that follows the disconnect-to-ground safety repair procedure, eliminating the risk of erroneous operations. Two insulator options are available: ceramic (stain and aging resistant, suitable for wet and dirty environments) and epoxy resin (lightweight and economical, suitable for standard indoor environments).

The rated current covers values ​​of 400 A and 630 A. The switches have excellent dynamic and thermal characteristics, and their mechanical service life exceeds 10,000 cycles. Ease of installation and maintenance makes them the best value for money choice for 10kV power distribution projects, ensuring safe and reliable operation of the power system.

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