FZN25-12D/T630-20 indoor AC high-voltage vacuum load switch and FZRN25-12D/T100-31.5 indoor AC high-voltage vacuum load switch fuse combination are control and protection devices for three-phase AC 50Hz, 12kV distribution systems. The products are oil-free, non-toxic, and have no fire or explosion hazards, and are widely used in industrial and mining enterprises, urban building distribution stations, and other places. The latter has a more reliable protective effect on electrical equipment such as transformers than circuit breakers, and is particularly suitable for ring networks, dual radiation power supply units, and box type substations FZN25-12D/T630-20 indoor AC high-voltage vacuum load switch (hereinafter referred to as load switch) is an indoor device with three-phase AC 50Hz and rated voltage of 12kV, suitable for industrial and mining enterprises
In places such as substations and substations, as protection and control for electrical facilities, it is used for dividing and combining load currents, closed-loop currents, no-load transformers, and cable charging currents. It is a grounding switch with the ability to close short-circuit currents. Its operating mechanism can be manual and electric, making it easy to achieve the three remote control requirements of the power system.

FZRN25-12D/T100-31.5 indoor AC high-voltage vacuum load switch fuse combination (hereinafter referred to as the combination) is an indoor device with three-phase AC 50Hz and rated voltage of 12kV, suitable for load control and short-circuit protection in industrial and mining enterprise distribution stations and substations. It also has a grounding switch with the ability to close short-circuit currents. Its operating mechanism can be manual and electric, making it easy to achieve the three remote control requirements of the power system.

The load switch complies with GB3804 standard, and the combination electrical appliance complies with GB16926 standard.