DIN FUSES
BS88 SEMICONDUCTOR PROTECTION FUSES
➤ Extremely High Interrupting Rating Fuses:
Protection of Power Semiconductors according
to IEC 269.1 & 4 and EN 60269-1.4
➤ 500-660V Voltage Rating (Rating 20 to 400A)
➤ gR Class (gRB Ratings 20 to 125A) According to
VDE 636-23.
-Full range protection
-Improving safety and protection
-Allows selective coordination
➤ aR Class (URB Ratings 75 to 400A) According to VDE
636-23 and IEC 269.4
➤ Two models according to BS 88-4 and EN 60
269.4 Standards: Z3 Drawing (74mm Between
Axes) External open fuse with and without indicator
PROTISTOR® FUSES
500-660V AC
gRB/URB FROM 20 TO 400A
SIZE: 000
Features/Benefits
VOLTAGE
RATING
UN( V )
CLASS
gRB
URB
URB
20
25
32
40
50
63
80
100
125
75
80
100
110
125
160
200
250
315
350
400
TESTED
INTERRUPTING RATING
200 k A
@ 660 V
200 k A
@ 660 V
120 k A @ 500 V
ESTIMATED
INTERRUPTING RATING
300 k A
@ 660 V
300 k A
@ 660 V
80
150
270
460
730
1500
2900
6000
11800
2250
2500
4200
6800
8900
16000
31500
52000
82000
110000
160000
12
20
39
70
102
210
475
970
1900
350
390
690
950
1300
2700
5250
9900
15500
22400
33200
APPLICATIONS DATA
WATT LOSSES
0.8 ININ
3.8
5.0
5.5
6.6
7.7
8.8
9.9
11
11.6
11.2
11.6
12.7
13.5
14.3
17.0
19.8
24.8
31.9
31.9
36.3
7
9
10
12
14
16
18
20
21
20.5
21
23
24.5
26
31
36
45
58
58
66
660
690+6%
660
690+6%
CURRENT
RATING
IN( A )
PRE-ARCING
I2t@ 1 ms
I2tp(A2s)
TOTAL
CLEARING
I2t@ UN
I2tt(A2s)
Minimum operating voltage for the separated trip-indicator: 20V
500
D 59
D
C US