FN7-12DR Indoor AC High Voltage Load Break Switch With Fuse

• Specification
• Technical Parameters

• FN7-12DR Load Break Switch Product Overview

  FN7-12DR type indoor AC off-voltage load break switch is applicable to AC 50Hz, rated voltage 12KV in the three-phase AC power system as a load current breaking and closing short-circuit current use, the combination of electrical appliances can open any current up to short-circuit current, can be used as protection.

  Feature
  1. Adopting high quality brand new raw materials, full oblique seams, refusing refurbishment
  2. The load switch equipped with grounding switch can withstand short-circuit current
  3. The stainless steel shell is thickened

  Ambient condition

  1. Altitude: ≤1000m;
  2. Ambient temperature: -25℃~+40℃;
  3. Relative humidity: daily average ≤95％, monthly average ≤90％;
  4. Earthquake intensity: ≤8 degree;
  5. Applicable occasions should free from inflammables, explosives, corrosives and severe vibration.

  FN7 Model Type

  Type	Model	DS	DX	L	R	RA	F
  		Earthing switch at input terminal	Earthing switch at output terminal	Interlock device	Fuse	Impact release	Power closing device
  No release	FN7-12	–	–	–	–	–	–
  	FN7-12DSL	△	–	△	–	–	–
  	FN7-12DXL	–	△	△	–	–	–
  	FN7-12R	–	–	–	△	–	–
  	FN7-12DSLR	△	–	△	△	–	–
  	FN7-12DXLR	–	△	△	△	–	–
  With impact release	FN7-12RAF	–	–	–	–	△	△
  	FN7-12DSLRAF	△	–	△	–	△	△
  	FN7-12DXLRAF	–	△	△	–	△	△

  Note: (-)without (△)with

• FN7-12DR Load Break Switch Technical parameters

  Rated voltage (KV)	11
  Max voltage (kV)	12
  Rated current (A)	400/630
  1min P.F withstand voltage (kV)	42/48 42/48
  4s thermal stable current (virtual)(kA)	12.5/20
  Dynamic stable current (peak)(kA)	31.5/50
  Short circuit making current (kA)	31.5/50
  Rated breaking current (A)	400/630
  Rated transfer current (A)	1000/1000

  FN7-12DR Dimensions reference

  

  Diagram 1 “Wire” load break switch without release

   

  

  Diagram 2 “transformer protection” load break switch without release

   

  

  Diagram 3 Release impact load break switch

   

  

  Diagram 4 CS6 Operating mechanism mounting drawing

   

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