Page 11 - Ferraz semiconductor BS88

Semiconductor fuses
Semiconductor (AC) fuses

®
Other Protistor Fuses
BS88-4 Fuses
36x27, 2X36x27, - 250 VAC

Extremely high breaking capacity fuses:
protection of power semiconductors as per IEC standard 60269.1
and 4

250 V voltage rating COMPLYING WITH IEC 33

gr class (ratings from 50 to 350 a URGG - 300 to
700 A URGH) AS PER VDE 636-23 AND IEC 60269.4

aR CLASS (RATINGS FROM 400 to 525 A URGG - 800 to
1050 A URGH) COMPLYING WITH VDE 636-23 AND IEC 60269.4

TWO MODELS COMPLYING WITH BS 88-4
- WITHOUT INDICATOR
- WITH SEPARATE TRIP-INDICATOR

Main Characteristics

Voltage Current Pre-arcing
rating Size Class rating I 2 t @ 1 ms Total clearing I 2 t @ U N Watts loss Tested
U ( V ) I ( A ) I 2 tp (A 2 s) A 2 s 0.8 I N I N Breaking capacity
N
N
50 120 500 4.75 9.5
75 330 1380 6.3 12.6
100 745 3060 7.8 15.7 100k A
125 1340 5500 9.1 18.2 @ 250 V
150 1930 7950 10.8 21.6
200 4020 16400 13.5 27.0
36x27 URGG 250 5350 30000 16.3 32.6
300 7290 49600 18.6 37.2
350 18000 74000 21 42.0
400 25100 128000 23.4 46.7
450 33500 170000 27.1 54.1
500 43000 219000 30.4 60.8
525 48200 245000 33.2 66.4
250V
300 7700 31800 21.6 43.2
100k A
350 11500 48700 24.3 48.6
@ 250 V
400 16000 65600 27 54.0
500 29100 120000 32.6 65.2
600 48200 198500 37.2 74.4
2x36x27 URGH 700 72000 276000 42.0 84.0
800 100000 512000 46.7 93.4
900 134000 680000 54.1 108.2
1000 172000 876000 60.8 121.6
1050 193000 980000 66.4 132.8

Minimum operating voltage for separate or integrated trip indicator = 20 V

SCAC206 12/04