40.5kV SF6 gas-insulated high-voltage fuse combination load switch

This 40.5kV switch integrates load switching and fuse protection in an SF6 gas-insulated design, tailored for medium-to-high voltage power distribution systems. The SF6 insulation ensures excellent dielectric performance, compact size, and resistance to harsh environmental factors like dust, humidity, and extreme temperatures.

RNL-40.5 isolation switch meets the requirements of GB3804-2004 "3.6kV~40.5kVhigh voltage AC load switch",“GB16926-1997 AC high voltage load switch, one fusecombination appliance".
Main circuit: 630A-20kA (4S) and 25kA (3S); mechanical life: 5000 times; groundingcircuit: 20kA (2S); mechanical life: 2000 times.

Considerations for the use of environmental conditions

The altitude does not exceed 2000m, the shattering of not more than 8 degrees

The environmental temperature of the product is -40 degrees ~+140 DEG C, the relativehumidity is not greater than 90% per day, and the average is not more than 90% permonth;
The installation site of frequent and violent shock, water vapor, chemical corrosiondeposition, salt fog, dust, dirt and fire, which obviously affect the performance of themechanism, are not suitable for the installation of explosive dangerous installations.

Model composition and meaning

Main technical parameters