ZN85-40.5 series indoor high voltage vacuum circuit breaker is suitable for three-phase AC 50Hz, rated voltage 40.5kv power system, and can be used for switching load current, overload current and fault current in industrial and mining enterprises, power plants and substations. The circuit breaker and the operating mechanism adopt an up-and-down arrangement mechanism, which effectively reduces the depth of the circuit breaker.

The ZN28(A)-12 indoor high voltage vacuum circuit breaker is a three-phase AC 50Hz, rated voltage 12kv indoor installation, mainly installed in handcarts and fixed switch cabinets, for industrial and mining enterprise power plants and substations for electrical equipment protection It is used for control and control, and is suitable for places with frequent operations.

FKN12-12/FKRN12-12 indoor high-voltage compressed air load switch is suitable for three-phase high-voltage switchgear of 12kv and below, as the control and protection of power equipment such as transformers, cables, and overhead lines; especially suitable for urban networks, The terminal substation and van-type substation of the rural power grid. It is also suitable for the control and protection of ring network and dual-radiation power supply units.

FZN25-12/FZ(R)N25-12D/T indoor high-pressure compressed air load switch and FZRN25-12D/T125-31.5 indoor high-pressure compressed air load switch-fuse combination electrical appliances are three-phase AC 50Hz, 12kv The control and protection device of the electrical system, the product is oil-free, non-toxic, without fire and explosion hazards, and is widely used in industrial and mining enterprises and power distribution stations in urban buildings. The latter is more reliable in protecting electrical equipment such as transformers than circuit breakers, and is especially suitable for ring networks, dual-radiation power supply units and van-type substations.

FZ(R)N21-12 indoor high-pressure compressed air load switch is suitable for three-phase AC 50Hz, rated voltage 12kv power supply network, as the purpose of breaking load current. It is especially suitable for places with no oil, no overhaul and frequent operation requirements. The FZRN21-12D indoor high-pressure pneumatic load switch-fuse combination electrical appliance is suitable for three-phase AC 50Hz, rated voltage 12kv power supply network, and places where oil-free, no maintenance and frequent operation requirements are required. The load switch and the combined electrical appliance have obvious isolation fractures, and can be equipped with a grounding knife and an electric spring mechanism with closing capability, which can realize remote control.

This type of high-voltage vacuum load switch and combined electrical appliances are suitable for three-phase AC 40.5kv, 50Hz power systems, or used in conjunction with sets of power distribution equipment, ring network switch cabinets, combined power stations, etc., and are widely used in wind power generation , Urban network construction and transformation projects, industrial and mining enterprises, high-rise buildings and public facilities, etc., can be used as ring network power supply units or terminal equipment, playing the role of electric energy distribution, control and protection.