Semiconductor fuses
fuses
Semiconductor (AC)
Other Protistor
®
Fuses
BS88-4 Fuses
10x28, 17x27 - 250 VAC
BRITISH STANDARD
250 VAC - URE - URGS - URZ
From 5 to 180 A
Sizes 10x28 - 17x27
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 5 to 32 a)
AS PER VDE 636-23 AND IEC 60269.4
aR CLASS (RATINGS FROM 7 to 180 A) COMPLYING WITH
VDE 636-23 AND IEC 60269.4
TWO MODELS COMPLYING WITH BS 88-4
- WITHOUT INDICATOR
- WITH SEPARATE TRIP-INDICATOR (SIZE 17x27)
17x27 URGS are UL Recognized
Main Characteristics
Voltage
rating
UN( V )
Size
Class
Current
rating
IN( A )
Pre-arcing
I
2
t @ 1 ms
I
2
tp (A
2
s)
Total clearing I
2
t @ UN
A
2
s
I
p
≤
30
I
N
I
p > 30
I
N
Watts loss
0.8
I
N
Tested
breaking capacity
I
N
1
1.2
2.1
2.8
3.5
4.0
4.7
5.4
1
1.5
2.0
3.0
3.9
4.8
5.6
6.5
8.8
10.4
13.6
13.7
11.5
12.3
13.6
15.6
17
10 x28
URE
5
6
10
12
15
20
25
32
7
10
12
16
20
25
30
35
50
60
75
80
100
125
150
160
180
1.3
1.8
2.4
4.3
6.7
15.0
27.0
53.0
1.3
4.5
5.9
11.2
15.6
30.0
45.0
63.0
180.0
250.0
380.0
480.0
730.0
850.0
1250.0
1730.0
2090.0
10
13
18
28
41
85
135
240
8,5
21
27
50
80
130
195
270
7890
1100
1670
2100
3350
5720
7930
9600
14500
11
15
20
33
48
100
160
280
9,8
23,8
31
59
100
160
235
330
940
1310
1990
2530
4060
6920
9590
11700
17500
0.6
0.7
1.2
1.6
2.0
2.2
2.6
3.0
0.56
0.84
1.1
1.7
2.2
2.7
3.2
3.7
4.9
5.8
7.2
7.25
6.5
6.7
7.4
8.8
9.5
160k A
@ 250 V
250V
URGS
17x27
160k A
@ 250 V
URZ
160k A
@ 250 V
Minimum Operating voltage for separate trip indicator = 20 V
SCAC
202
12/04
Semiconductor (AC) fuses
Other Protistor
®
Fuses
BS88-4 Fuses
10x28, 17x27 - 250 VAC
Semiconductor fuses
CP 10x28 - Without trip-indicator
Size
Designation
Ref. Number
Pack.
Catalog Number
10x28
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
URE
URE
URE
URE
URE
URE
URE
URE
10/5
10/6
10/10
10/12
10/15
10/20
10/25
10/32
M082489
E097478
L082488
P097487
K082487
J082486
X097494
N081984
10
(11g)
BS10UE25V5
BS10UE25V6
BS10UE25V10
BS10UE25V12
BS10UE25V15
BS10UE25V20
BS10UE25V25
BS10UE25V32
**BBS 88 part 4
requires respectively
Ø8.7 and 8.8
CP 17x27 - Without trip-indicator
Size
Designation
Ref. Number
Pack.
Catalog Number
17x27
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
URGS 17/7
URGS 17/10
URGS 17/12
URGS 17/16
URGS 17/20
URGS 17/25
URGS 17/30
URGS 17/35
URGS 17/50
URGS 17/60
URGS 17/75
URGS 17/80
URZ 17/100
URZ 17/125
URZ 17/150
URZ 17/160
URZ 17/180
M076647
N076648
P076649
Q076650
L097507
R076651
S076652
T076653
V076654
W076655
X076656
Z085559
Y085558
G097526
W085556
H097527
N097532
10
(30g)
BS17US25V7
BS17US25V10
BS17US25V12
BS17US25V16
BS17US25V20
BS17US25V25
BS17US25V30
BS17US25V35
BS17US25V50
BS17US25V60
BS17US25V75
BS17US25V80
BS17UZ25V100
BS17UZ25V125
BS17UZ25V150
BS17UZ25V160
BS17UZ25V180
CP 17x27 - With separated trip-indicatorBS88-4
Size
Designation
Ref. Number
Pack.
Catalog Number
17x27
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
2.5
URGS 17P7
URGS 17P10
URGS 17P12
URGS 17P16
URGS 17P20
URGS 17P25
URGS 17P30
URGS 17P35
URGS 17P50
URGS 17P60
URGS 17P75
URGS 17P80
URZ 17P100
URZ 17P125
URZ 17P150
URZ 17P160
URZ 17P180
P097533
Q097534
S097536
X097540
B097544
D097546
E097547
F097548
J097551
H081082
K097552
L097553
P097556
Q097557
R097558
S097559
T097560
10
(40g)
BS17US25V7P
BS17US25V10P
BS17US25V12P
BS17US25V16P
BS17US25V20P
BS17US25V25P
BS17US25V30P
BS17US25V35P
BS17US25V50P
BS17US25V60P
BS17US25V75P
BS17US25V80P
BS17UZ25V100P
BS17UZ25V125P
BS17UZ25V150P
BS17UZ25V160P
BS17UZ25V180P
Microswitch MC6.3 GR 2-5N Ref: Y301015
12/04
SCAC
203
Semiconductor fuses
fuses
Semiconductor (AC)
Other Protistor
®
Fuses
BS88-4 Fuses
10x28, 17x27 - 250 VAC
Electrical characteristics
Times vs current characteristics
URE
URGS
URZ
* These curves indicate, for each rated current,
the pearcing time vs. the R.M.S. pre-arcing current.
* Tolerance for the mean pre-arcing current ± 10%
Corrective factor - Peak arc voltage
URE
Corrective
factor
Peak arc
voltage
URGS
URZ
* The mean curves show the variation of the total
clearing time (I
2
tt) and the total clearing duration tt
as a function of operating voltage U
This curve show the peak value Um of the arc voltage
which appears across the fuse link as a function of the
operating voltage U @ cos
ϕ
= 0.15.
SCAC
204
12/04
Semiconductor (AC) fuses
Other Protistor
®
Fuses
BS88-4 Fuses
10x28, 17x27 - 250 VAC
Semiconductor fuses
D.C Applications data
• These curve indicate the permissible
value of time constant L/R as a function
of the D.C. working voltage.
Curves # and Ipm for each rating
Class
Rated current
*
I
pm(A)
URE
• These
Ipm
values give the minimum
DC interrupting current in amps.
URGS
URZ
5
6
10
12
15
20
25
32
7
100
125
150
160
180
5
5
5
5
5
5
5
5
5
4
3
2
2
1
40
50
55
80
100
130
175
255
40
190
250
300
330
400
for URGS class fuses, consult us.
12/04
SCAC
205
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