Date:- 18 Mar, 2005
Data Sheet Issue:- 1
Ultra Rapid
Semiconductor Protection Fuse
BS 88 Round Body Type Fuses 690V
British Standard BS88-4
Voltage Rating - 690V
gR and aR Characteristics
Current Ratings from 12A to 100A
Size 17x49
Key Features:
Extremely high interrupting rating fuses for the protection of power semiconductors as per
IEC Standard 269.1 and 4.
690V voltage rating complying with IEC 33
Non Magnetic construction
gR Characteristics, current ratings from 12A to 90A in accordance with VDE 636-23 and EC 269.4
aR Characteristics for current rating 100A in accordance with VDE 636-23 and IEC 60269.4
Available with or without trip indicator switch
Microswitch reference : MS 6.3 GR 2-5N for fuse with separate trip indicator
These fuses are UL recognised
Data Sheet. xEW & xEWI
Issue 1
Page 1 of 5
March, 2005
WESTCODE
An
IXYS Company
BS 88 round body 690V
Main Characteristics:
EW : 17x27 Without trip indicator
Size
Voltage
U
N
(V)
Ref:
12EW
16EW
20EW
25EW
32EW
35EW
17x49
690
40EW
45EW
50EW
63EW
75EW
80EW
90EW
100EW*
Micro
Switch
N
N
N
N
N
N
N
N
N
N
N
N
N
N
Current
rating
I
N
(A)
12
16
20
25
32
35
40
45
50
63
75
80
90
100
Pre-arcing
I
2
t @ 1 ms
I
2
t
p
(A
2
s)
4.2
9.6
17.1
26.8
52.5
69
96
130
154
310
520
620
840
965
Total Clearing
I
2
t @ U
N
(A
2
s)
30
65
110
170
330
430
610
820
970
1950
3250
3900
5300
6150
Power Losses @
0.8 In
1.95
2.2
3
4.4
5
5.2
5.8
6.3
7.2
8
8.8
9.4
11
13
In
3.5
4
5.5
8
9
9.5
10.5
11.5
13
14.5
16
17
20
23.5
200kA @ 690V
Tested
Interrupting
rating
* aR characteristics
EWI : 17x27 With separate trip indicator
Size
Voltage
U
N
(V)
Ref:
12EWI
16EWI
20EWI
25EWI
32EWI
35EWI
17x49
690
40EWI
45EWI
50EWI
63EWI
75EWI
80EWI
90EWI
100EWI*
Micro
Switch
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Current
rating
I
N
(A)
12
16
20
25
32
35
40
45
50
63
75
80
90
100
Pre-arcing
I
2
t @ 1 ms
I
2
t
p
(A
2
s)
4.2
9.6
17.1
26.8
52.5
69
96
130
154
310
520
620
840
965
Total Clearing
I
2
t @ U
N
(A
2
s)
30
65
110
170
330
430
610
820
970
1950
3250
3900
5300
6150
Power Losses @
0.8 In
1.95
2.2
3
4.4
5
5.2
5.8
6.3
7.2
8
8.8
9.4
11
13
In
3.5
4
5.5
8
9
9.5
10.5
11.5
13
14.5
16
17
20
23.5
200kA @ 690V
Tested
Interrupting
rating
* aR characteristics
Notes: Minimum operating voltage for integrated trip indicator = 20V
Microswitch reference :
MS 6.3 GR 2-5N
Data Sheet. xEW & xEWI Issue 1
Page 2 of 5
March, 2005
WESTCODE
An
IXYS Company
BS 88 round body 690V
Electrical Characteristics:
Times vs current characteristics
These curves indicate, for each rated current, the pre-arcing time vs. the RMS pre-arcing current.
Tolerance for the mean pre-arcing current ± 9%
Total clearing I²T:
The horizontal curves show for each rated current maximum values of total clearing I
2
t (I
2
t
t
) as a
function of prospective current Ip @ 690V. cosϕ = 0.15.
Oblique lines indicate total clearing duration Tt and associated pre-arcing duration in brackets.
Data Sheet. xEW & xEWI Issue 1
Page 3 of 5
March, 2005
WESTCODE
An
IXYS Company
BS 88 round body 690V
Cut off Characteristics:
Curves show, for each rating, value of peak let-through current I
C
as a function of available
fault current Ip.
Corrective Factor
Peak Arc Voltage
The mean curves show the variation of the total
clearing time (I
2
t
t
) and the total clearing duration t
t
as a function of operating voltage U.
This curve shows 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.
Data Sheet. xEW & xEWI Issue 1
Page 4 of 5
March, 2005
WESTCODE
An
IXYS Company
BS 88 round body 690V
Outline Drawing & Ordering Information
EW – 40gm (10 pcs)
EWI – 60gm (10 pcs)
ORDERING INFORMATION
Style
BS 88 Round Body
Voltage
690V
Current Rating (A)
12 - 100
(Please quote code as below)
Type
EW
Trip Indicator
I
Order code: e.g.
45EW
= BS 88 Round Body 45 amp fuse without trip indicator.
IXYS Semiconductor GmbH
Edisonstraße 15
D-68623 Lampertheim
Tel: +49 6206 503-0
Fax: +49 6206 503-627
E-mail:
marcom@ixys.de
IXYS Corporation
3540 Bassett Street
Santa Clara CA 95054 USA
Tel: +1 (408) 982 0700
Fax: +1 (408) 496 0670
E-mail:
sales@ixys.com
Westcode Semiconductors Ltd
Langley Park Way Langley Park
Chippenham Wiltshire SN15 1GE
Tel: +44 (0)1249 444524
Fax: +44 (0)1249 659448
E-mail:
WSL.sales@westcode,com
Westcode Semiconductors Inc
3270 Cherry Avenue
Long Beach CA 90807 USA
Tel: +1 (562) 595 6971
Fax: +1 (562) 595 8182
E-mail:
WSI.sales@westcode.com
© Westcode Semiconductors Ltd.
www.westcode.com
www.ixys.com
The information contained herein is confidential and is protected by Copyright. The information may not be used or disclosed
except with the written permission of and in the manner permitted by the proprietors Westcode Semiconductors Ltd.
In the interest of product improvement, Westcode reserves the right to change specifications at any time without prior notice.
Data Sheet. xEW & xEWI Issue 1
Page 5 of 5
March, 2005
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