Page 31 - Ferraz semiconductor BS88

Semiconductor fuses
Semiconductor (AC) fuses

Other Protistor Fuses
®
BS88-4 Fuses
36x55, 2x36x55 - 690 VAC

EXTREMELY HIGH BREAKING CAPACITY FUSES:
PROTECTION OF POWER SEMICONDUCTORS AS PER IEC
STANDARD 60269.1 AND 4
690 V VOLTAGE RATING COMPLYING WITH IEC 33
AR CLASS (RATINGS FROM 75 TO 800 A) AS PER VDE 636-23
AND IEC 60269.4
THREE MODELS COMPLYING WITH BS 88-4
- WITHOUT INDICATOR
- WITH SEPARATE TRIP-INDICATOR
- WITH BUILT-IN TRIP-INDICATOR

Main Characteristics

Voltage Current Total clearing I 2 t @ 660 V
Pre-arcing Tested
rating Size Class rating A 2 s Watts loss
U ( V ) I ( A ) I 2 t @ 1 ms Breaking capacity
N N I 2 tp (A 2 s) Ip ≤ 50 I N Ip > 50 I N 0.8 I I
N N
75 350 1800 2000 9.7 19.5
URR 110 1180 6000 67000 11.3 22.8 200k A
200 3900 18500 20500 21.8 41.4 @ 690 V
250 8760 41000 46000 23.6 44.1
50 180 860 990 7.3 14.0
65 335 1600 1840 8.8 17.1
85 480 3450 4000 12.2 23.5
90 720 41000 4700 13.2 25.5
36x55
150 2880 12600 14500 18..9 35.3 200k A
URGL 180 5350 22500 25500 19.1 35.7 @ 690 V
200 9510 40000 46000 17.7 33.1
250 21400 97000 11000 18.7 34.5
690V 280 29100 125000 145000 20.3 38.0
315 38100 157000 180000 222.77 42.6
355 48200 190000 215000 25.9 48.5
400 72000 265000 305000 26.7 50.0

200 4700 24000 27000 18.4 33.0 200k A
235 6920 34500 39000 21.0 37.6 @ 690 V
URU
400 21200 100000 110000 34.8 62.3
500 35000 164000 184000 47.2 88.2
630 97300 515000 575000 41.1 73.2

175 2880 13800 16000 24.7 47.6
2x36x55
300 13700 660000 68000 31.5 59.0
325 21400 900000 102000 30.0 54.0
URGM 355 25200 106000 120000 33.1 62.0 200k A
450 65600 300000 340000 34.6 63.8
500 85600 390000 440000 37.44 69.0 @ 690 V
630 152000 630000 720000 45.4 85.2
710 193000 760000 860000 51.8 97.0
800 282000 1.22 10 6 1.22 10 6 53.4 100.0

Minimum operating voltage for built-in and separate trip indicator = 20 V

SCAC222 12/04