FZN25 12KV electric three pole vacuum &vacuum with fuse load switch circuit breaker

Short Description:

  • FZRN25-12D vacuum load switch and combination electric appliance, suitable for three-phase AC 50/60Hz ring network or terminal power supply and industrial power equipment, for load control and short circuit protection, load switch split load, closed loop current, no load transformer And cable charging current. The combination can break any current up to the rated short-circuit current. Direct-acting isolation fracture and vacuum arc linkage are adopted. With manual and electric functions.
  •  FZRN25-12D’s unique transmission structure design, the arc extinguishing chamber is only subjected to high pressure at the moment of closing and breaking, so it is small in size and light in weight.
  • The FZRN25-12D enables one-time operation of the isolation fracture and the interrupter of the arc chamber.
  •  FZRN25-12D has a grounding valve interlocking with the grounding switch between the static contact and the moving contact conductive tube, which ensures safe and convenient maintenance.

Product Detail

Product Tags

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The main technical parameters: 

1

Rated voltage

KV

12

2

Rated frequency

Hz

50

3

Rated current

A

630

125

4

Rated insulation level

1min power frequency withstand voltage

KV

Arc chute break 30; ground, phase 42; isolation fracture 48

Lightning impulse withstand voltage

KV

Ground, phase 75; isolation fracture 85

5

Rated dynamic current (peak)

KA

50

-

6

4s thermal stable current

KA

20

-

7

Rated active load breaking current

A

630

125

8

Rated closed-loop breaking current

A

630

125

9

Rated cable charging breaking current

A

10

10

10

Breaking the capacity of the no-load transformer

KVA

1250

1250

11

Rated short-circuit breaking current

KA

-

31.5

12

Rated transfer current, rated AC current

A

-

2000

13

Fuse type

-

SDLAK-12 SFLAJ-12

14

Impactor output energy

J

-

2-5(medium)

15

Rated short circuit closing current

KA

50

16

Grounding switch rated dynamic current

KA

50

17

Grounding switch 2s thermal stable current

KA

20

18

Auxiliary circuit rated voltage

V

AC/CD220;110

19

Mechanical life

times

10000

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Feature:

1.Unique transmission structure design, small volume and light weight,

2.The interrupter only bears high voltage at the moment of making and breaking.

3.It can realize the one-time operation of isolating fracture and interrupter end fracture

4.There is a grounding valve linked with the grounding switch between the static contact and the moving contact conducting cylinder

5.It is safe and convenient to inspect


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