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DB07 Distribution Board

DB07 Distribution Board


DB07 Distribution Boards

1. One Band-single phase and Neutral

Mounting Type

MCB ways

Box Assembly List No

+

Front Plate List No

=

Distribution Board List No

Without Hinged Protective Cover

4

4

+

30

=

104

Surface

6

6

+

30

=

106

9

9

+

31

=

109

12

12

+

32

=

112

Flush

6

6

+

30/2

=

106/2

9

9

+

31/2

=

109/2

12

12

+

32/2

=

112/2

Without Hinged Protective Cover

Surface

4

4

+

30/1

=

104/1

6

6

+

30/1

=

106/1

9

9

+

31/1

=

109/1

12

12

+

32/1

=

112/1

Flush

6

6

+

30/3

=

106/3

9

9

+

21/3

=

109/3

12

12

+

32/33

=

112/3

2. Maximum earth fault loop impedance inohms for circuits supplying socket outlets (also fixed equipment in bathrooms).

Device

Rating of Device

5A

15a

20A

30A

45A

Type 1

12

4

3

2

1.33

Rewirable Fuse

9.6

2.7

1.8

1.1

0.6

House Service Fuse

11.4

3.4

1.8

1.2

0.6

Type 2

6.8

2.3

1.7

1.1

0.75

Type 3

4.8

1.6

1.2

0.8

0.53

Regard Service of Ratings

Device

6A

10A

16A

20A

32Z

Type 1

10

6

3.75

3

1.87

HRC Fuse

8.7

5.3

2.8

1.8

1.1

Type 2

5.67

3.4

2.12

1.7

1.06

Type 3

4

2.4

1.5

1.2

0.75

3. Note: At these values of loop impedancefuses will operate within 0.4 sec. and MCBS will operate in 0.1 second Typical operating characteristics for Crabtree MCBS.

4. Chart of Distribution Boards:

5.OtherParameters of Distribution Boards:

AL 3871 Type

Instantaneous trip current range

Typical Application

Crabtree MCB

1

2.7-5 In

Domestic

Starbreaker

2

4-7 In

Commercial Light Industrial

Polestar C50

3

7-10 In

General Industrial

Polestar

Other electronic components including miniaturecircuit breaker, earth leakage circuit breaker, AC contactor, Power relay, etc.are available.

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