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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..

ZN28A 12 Indoor AC HV Vacuum Circuit breaker

ZN28A-12 Indoor AC HV Vacuum Circuit breaker

 ZN28A-12 Indoor AC HV Vacuum Circuit Breaker is an indoor equipment of three phase AC 50HZ, rated voltage 10KV, which is mainly mounted in the fixed switchgear to protect and control the apparatuses in the industrial and mining enterprises, power plants and substations, especially in the workplaces of frequent operation and reconstruction project of old cubicle. It is equipped with CD10, CD17 electromagnetic operative mechanism or CT8, CT19 spring operative mechanism.

Feature  of Indoor High VoltageVacuum Circuit Breaker

Type designation:
 

Technical parameter:

NO
Name
Unit
ZN28A-
12/630
(1250)-
12.5
ZN28A-
12/630
(1250)-
20
ZN28A-
12/1250
(1600
,
2000)-25
ZN28A-
12/1250
(1600
,2000)-31.5
ZN28A-
12/2000
(2500
,3150)-40
1
Rated voltage
KV
12
12
12
12
12
2
Rated current
A
630 1250
630 1250
1250
1600
2000
1250
1600
2000
2000
2500
3150
3
Rated short-circuit breaking current
KA
12.5
20
25
31.5
40
4
Rated short-circuit making current
KA
31.5
50
63
80
100
5
Rated peak withstand current
KA
31.5
50
63
80
100
6
Rated short-time withstand current
KA
12.5
20
25
31.5
40
7
Rated short-time withstand time
S
4
4
4
4
4
8
Breaking times of rated short-circuit
Times
30
30
30
30
30
9
Rated operative sequence
 
Off-0.3s-on/off-180s-on/off
10
Rated 1min power frequency withstand voltage
KV
42
11
Lightning impulse withstand voltage
KV
75
12
Mechanical Endurance
Times
10000


Notes for ordering:
      a. Type,specifications, quantity and product;
      b. The description, specifications and quantity of other accessories.