FZN25-12 series vacuum load switchDetailed product description：

FN25 and FZRN25 vacuum load switches and combination devices are suitable for use in three-phase AC 50Hz ring networks or terminal power supply and industrial electrical equipment for load control and short-circuit protection. The load switch is used to open and close loads, closed-loop currents, no-load transformers, and cable currents. Combination appliances can disconnect any current up to the rated short current. Adopting direct action isolation fracture and vacuum arc chamber linkage. It has manual and electric functions.
The unique transmission structure design of FZN25 and FZRN25 allows the arc extinguishing chamber to only withstand high voltage at the moment of closing and opening, resulting in small size and low price.
FZN25 and FZRN25 can achieve one-time operation of isolating the fracture surface and extinguishing chamber fracture surface.
FZN25 and FZRN25 have grounding valves that are interlocked with the grounding switch between the static contact and the moving conductor, ensuring safety and facilitating maintenance.

Three main technical parameters:

serial number	project		unit	parameter
				FZN25-12D/T630-20	FZTN25-12D/T25-31.5
one			KV	twelve
two			Hz	fifty
three			A	six hundred and thirty	one hundred and twenty-five
four	Rated insulation level	1-minute power frequency withstand voltage	KV	Arc extinguishing chamber fracture 30: to ground, phase to phase 42; Isolation fracture 48
		Lightning impulse withstand voltage	KV	Ground to ground, alternating 75; Isolation fracture 85
five	Rated dynamic stability current (peak value)		KA	fifty	--
six	4S thermal stability current		KA	twenty	--
seven	Rated Active load breaking current		A	six hundred and thirty	--
eight	Rated closed-loop breaking current		A	six hundred and thirty	--
nine	Rated cable charging arbitrary current		A	ten	--
ten	Disconnect the capacity of the no-load transformer		KV/A	one thousand two hundred and fifty	--
eleven	Rated short-circuit switch breaking current		KA	--	thirty-one point five
twelve	Rated transfer current, rated handover current		A	--	two thousand
thirteen	Fuse model			--	SDLAJ-12 SFLAJ-12
fourteen	Impactor output energy		J	--	2-5 (moderate)
fifteen	Rated short-circuit closing current		KA	fifty
sixteen	Rated dynamic stability current of grounding switch		KA	fifty
seventeen	Grounding switch 2S thermal stability current		KA	twenty
eighteen	Rated voltage of auxiliary circuit		V	≌220； one hundred and ten
nineteen	mechanical life		time	ten thousand