Page 127 - Ferraz semiconductor DIN

Semiconductor fuses
Semiconductor (AC) fuses

®
Protistor Square-body Fuses
NH Plain Blades - 690 VAC
aR - 690 VAC sizes 000 to 3

Times/Current Characteristics

40 63 125 100 200 160 315 250 SIZE 0 t (s) 80 125 100 160 250 350 SIZE 1
t (s) 32 50 80 63 200 315 400
4 4
10 10
a = 130 a = 130
B1 = 1,25 B1 = 1,25
3 3
10 A2 = 0,6 10 A2 = 0,6
B2 = 0,6 B2 = 0,6
2 Cf3 = 0,8 2 Cf3 = 0,8
10 10
C C' C C'
1 1
10 10
0 0
10 10
-1 -1
10 10
-2 -2
10 10

-3 -3
10 10
-4 -4
10 2 3 4 10 2 3 4
10 10 10 Ip (A) 10 10 10 Ip (A)
Cut off characteristics - Peak let thru current

SIZE 0 SIZE 1
Ic(kA) Ic(kA)
5 5
10 10
Ic = 2 Ip
Ic = 2.5 Ip Ic = 2.5 Ip
Ic = 2 Ip
400
315 350
250
4 4 315
10 200 10 250
160 160 200
125 125
100 100
80
63 80
50 63
40
32
3
10 10 3
2 2
10 6 10
6
10 2 10 3 10 4 10 5 10 Ip (kA) 10 2 10 3 10 4 10 5 10 Ip (kA)
Total I t and total operating time @ 690 V
2
SIZE 1
SIZE 0 10.0 ms (3.00 ms) 6.0 ms (0.80 ms)
10.0 ms (3.00 ms) 6.0 ms (0.80 ms) 2 I t(A s)
2
2
2
I t(A s) 10.0 ms (5.00 ms) 8.0 ms (1.60 ms) 4.0 ms (0.40 ms) 10.0 ms (5.00 ms) 8.0 ms (1.60 ms) 4.0 ms (0.40 ms)
5
10
315 5
10 400
250 350
315
200
4 250
10
160
Value between 4 200
125 10
parentheses pertain 160
100
125
3
10 80 to prearcing I t
2
63 3 100
50 10 80
63
40
32
2
10
2
10
10 2 10 3 10 4 10 5 Ip (A) 10 2 10 3 10 4 10 5 Ip (A)
SCAC107
03/06