Page 36 - Ferraz semiconductor BS88

Semiconductor fuses
Semiconductor (AC) fuses

®
Other Protistor Fuses
BS88-4 Fuses
17x49 gRB/URB - 690 VAC

EXTREMELY HIGH BREAKING CAPACITY FUSES:
PROTECTION OF SEMICONDUCTORS
AS PER IEC STANDARD 60269.1 AND 4
690 V VOLTAGE RATING AS PER IEC 33

gR CLASS (CURRENT RATING 12 TO 90 A) AS PER
VDE 636-23
- CLEARING ALL OVERLOADS
- IMPROVED SAFETY AND PROTECTION
- ENABLING SELECTIVE COORDINATION WITH ALL FUSES
WITHIN DISTRIBUTION CIRCUIT

aR CLASS (CURRENT RATING 100 A) ACCORDING TO VDE
636-23 AND IEC 60269.4
CONNECTION AS PER:
- GERMAN STANDARD DIN 43653/00C
- BRITISH STANDARD BS 88-4

These fuses are UL Recognized

Main Characteristics

Voltage Current pre-arcing Total clearing
rating Class rating 2 2 Watts loss Tested Estimated
U ( V ) I ( A ) I t @ 1 ms I t @ UN 0.8 I N I N Breaking capacity Breaking capacity
N
N
2
I tp (A2s)
2
I tt (A s)
2
12 4.2 30 1.95 3.5
16 9.6 65 2.2 4.0
20 17.1 110 3.0 5.5
25 26.8 170 4.4 8.0
32 52.5 330 5.0 9.0
690 gRB 35 69 430 5.2 9.5 200 k A 300 k A
40 96 610 5.8 10.5 @ 690 V @ 690 V
45 130 820 6.3 11.5
50 154 970 7.2 13
55 210 1320 7.4 13.5
63 310 1950 8.0 14.5
75 520 3250 8.8 16
80 620 3900 9.4 17
90 840 5300 11 20
690 URB 100 965 6150 13 23.5 200 k A 300 k A
@ 690 V @ 690 V

Minimum operating voltage for separate trip-indicator: 20 V

SCAC226 12/04