Page 21 - Ferraz semiconductor BS88

Semiconductor fuses
Semiconductor (AC) fuses

Other Protistor Fuses
®
BS88-4 Fuses
000 BS88 - 500 V to 690 VAC

EXTREMELY HIGH BREAKING CAPACITY FUSES: PROTECTION OF POWER
SEMICONDUCTORS AS PER IEC STANDARD 60269.1 AND 4, AND EN
60269-1 AND 4

500- 690 V VOLTAGE RATING (RATING 20 TO 400 A)

gR CLASS (gRB RATINGS 20 TO 125 A) ACCORDING
TO VDE 636-23
- CLEARING ALL OVERLOADS
- IMPROVED SAFETY AND PROTECTION
- ENABLING SELECTIVE COORDINATION WITH ALL FUSES
aR CLASS (URB RATINGS 75 TO 400 A) ACCORDING TO VDE 636-23
AND IEC 269.4

TWO MODELS ACCORDING TO BS 88-4 AND EN 60 269 .4
STANDARDS; Z3 DRAWING (74 mm BETWEEN AXES) WITHOUT
BLOWN FUSE
INDICATION - WITH SEPARATE TRIP INDICATOR

These fuses are UL Recognized

Main Characteristics

Voltage Current Pre-arcing
rating Class rating I 2 t @ 1 ms Total clearing Watts loss Tested Estimated
U ( V ) I ( A ) I 2 t (A 2 s) I 2 t (A 2 s) 0.8 I N I N Breaking Breaking capacity
N
N
p
capacity
20 12 80 @ 660 V 3.8 7
25 20 150 @ 660 V 5.0 9
32 39 270 @ 660 V 5.5 10
690 V gRB 200k A 300k A
40 70 460 @ 660 V 6.6 12
50 102 730 @ 660 V 7.7 14 @ 690 V @ 690 V
63 210 1500 @ 660 V 8.8 16
80 475 2900 @ 660 V 9.9 18
100 970 6000 @ 660 V 11 20
125 1900 11800 @ 660 V 11.6 21
75 350 2250 @ 660 V 11.2 20.5
80 390 2500 @ 660 V 11.6 21
100 690 4200 @ 660 V 12.7 23
110 950 6800 @ 660 V 13.5 24.5 200k A
690 V URB 125 1300 8900 @ 660 V 14.3 26 @ 690 V 300k A
160 2700 16000 @ 660 V 17.0 31 @ 690 V
200 5250 31500 @ 660 V 19.8 36
250 9900 52000 @ 660 V 24.8 45
315 15500 82000 @ 660 V 31.9 58
350 22400 110000 @ 500 V 31.9 58 120k A
500 V URB 400 33200 160000 @ 500 V 36.3 66 @ 500 V

Minimum operating voltage for separate trip indicator = 20 V

SCAC214 12/04