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We are the supplier and exporter of low & medium voltage electric equipements: Electric Connectors, Industrial Plugs, XAC Pendent Pushbutton Switches, APP SB Power Connectors ,Contacts,Split Core Transformer, Clamp Transformer, Distribution box, LED Lampes. And crane parts: Electirc Hoist, Terminal Blocks, COB,XAC Pendant Control Stations, Crane Overload Detector, Cut off limit..

ZN28BI 12 Indoor AC High Voltage Vacuum Circuit Breaker

ZN28BI-12 Indoor AC HV Vacuum Circuit Breaker

ZN28BI-12 Indoor AC HV Vacuum Circuit Breaker is indoor equipment with three-phase of AC 50HZ and 12KV rated voltage, can be used to protect and operate the apparatuses in the industrial and mining enterprises, the distribution system, especially in the situation that requires no oil, little maintenance and frequent operation. 

Features of ZN28BI-12 Indoor AC High Voltage  Vacuum Circuit Breaker :
      a. Circuit breaker and its controlling mechanism form integration;
      b. Perfect in structure, stability and reliability in operation;
      c. Long service time, easy maintenance, and no danger of bombing, no pollution, low noise;
      d. Fitted in the handcart box or fixed box;
      e. The capacity of opening, breaking frequently and closing quickly;
      f. Especially used in the places of frequent operation;

Technical Parameter:

NO

ITEM

UNIT

DATA

1

Rated voltage

KV

12

2

Rated short-circuit breaking current

KA

20

25

31.5

40

3

Rated current

A

630
1250

630
1250

1250
1600
2000
2500

1600
2000
2500
3150

4

Rated short-time withstand current

KA

20

25

31.5

40

5

Rated peak withstand current

KA

50

63

80

100

6

Short making current

KA

50

63

80

100

7

Rated power frequency withstand voltage

KV

40

 

 

 

8

Rated lightning impulse withstand voltage

KV

75

9

Mechanical endurance

Times

10000

10

Pitch distance between phases

Mm

210,230,250,275


Notes for ordering:
      Please indicate the following items while ordering;
      a. Model, name, rated voltage, rated current and rated breaking current of the product;
      b. Model, name, closing voltage and opening voltage of the control mechanism;
      c. Model, name, and rated voltage of the over-voltage protecting components.