Crabtree - Commercial, Circuit Protection, Cable Management 2013

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77

7T3 TIME/CURRENT CHARACTERISTICS

TECHNI CAL DATA

7T3 MCCB CHARACTER I ST I CS

x

I

n

20

50

10

0.1 0.2

0.5 1

2

5

I

r = 575 A.630 A ~

I

i = 7 kA

4x

12.5x

4x

12.5x

4x

12.5x

4x

12.5x

4x

12.5x

4x

12.5x

I

I

n

= 250 A

I

n

= 400 A

I

n

= 630 A

I

i

I

i

I

i

I

n

= 250 A

I

n

= 400 A

I

n

= 630 A

L

I

r

I

i

0.01

0.01

10

100

1000

10000

t

[s]

0.01

0.1

0.1

0.1

1

I

r

min.

max.

3

3