Manhua Electric Co., Ltd.
Main products:circuit breaker,surge arrestor,load break switch,meter,socket
Products
Contact Us
  • Contact Person : Mr. huang zan
  • Company Name : Manhua Electric Co., Ltd.
  • Tel : 0086-577-62773 883
  • Fax : 0086-577-62766508
  • Address : Zhejiang,Yueqing,No.888,chezhan road,Liushi Town,
  • Country/Region : China
  • Zip : 325604

Control protective switching devices

Control protective switching devices
Product Detailed
a new product in low voltage electric.

 Main technical data:1) Two outline dimensions (C and D frame size): 3-pole and 4-pole2) Current ratings: C Frame: 12A, 16A, 18A, 32A, 45A;  D Frame: 45A, 63 A,100A,125A3) setting current: 0.16A~125A4) Short-circuit break capacity: a) 35kA for type C (economic)  b) 50kA for type Y (standard)  c) 80kA for type H (high capacity)5) Opening time under prospective short-circuit current is 2 ~ 3ms, at current limiting of 0.2 and below.

Functions:

MKB0 adopts modularized single structure and integrates main function of traditional circuit breaker ,fuse, contactor, overload (or over current, open phase) relay, starter and isolator, it owns remote automatic control and local direct manual control function as well panel indication and electrical signal alarm function, it also has coordinated time-current protection characteristic (three sections protection characteristics of inverse time delay, definite time delay and instantaneous), shown as fig. 4. Functional module and accessory can be selected and used to realize control and protection for general (infrequent start) motor load, motor load of infrequent start and distribution circuit load according to requirement.

 

Inm frame current

Rated current of main body In(A)

Rated current of intelligent controller le(A)

Current setting of short delay triiping Ir2(A)

Current setting of long delay triiping Ir1(A)

Controllable capacity at 380V(KW)

Usage category

45

1216183245

0.4

0.48-4.8

0.16-0.4

0.05-0.12

AC-42AC-43AC-44

1

1.2-12

0.4-1

0.12-0.33

2.5

3-30

1-2.5

0.33-1

4

4.8-48

1.6-4

0.33-1.6

6.3

7.5-75

2.5-6.3

1-2.5

12

14.4-144

4.8-12

2.2-5.5

16

19.2-192

6.4-16

2.5-7.5

18

21.6-216

7.2-18

3.0-7.5

25

30-300

10-25

5.5-11

32

38.4-384

12.8-32

5.5-15

40

48-480

16-40

7.5-18.5

45

54-540

18-45

7.5-22

6.3

7.5-75

2.5-6.3

1-2.5

125

161832455063100125

12

14.4-144

4.8-12

2.2-5.5

16

19.2-192

6.4-16

2.5-7.5

18

21.6-216

7.2-18

3.0-7.5

25

30-300

10-25

5.5-11

32

38.4-384

12.8-32

5.5-15

40

48-480

16-40

7.5-8.5

45

54-540

18-45

7.5-22

50

60-600

20-50

7.5-22

63

75.6-756

25.2-63

11-30

80

96-960

32-80

15-37

100

120-1200

40-100

18.5-45

125

150-1500

50-125

22-55

Control protective switching devices



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