Date:- 18 Mar, 2005
Data Sheet Issue:- 1
Ultra Rapid
Semiconductor Protection Fuse
European Square Body Type
French Standard End Contact
Voltage Rating 650V to 1250V
Current Rating 63A to 1800A
aR Characteristics
Sizes 0, 1, 2, 3
Key Features:
Extremely high interrupting rating fuses for the protection of power semiconductors in accordance with
IEC standard 60269.1 and 4.
Exceptionally low I
2
t watt losses
Conform to UL Recognition for many devices, CSA investigated, IEC, DIN and VDE standards
Increased technical performance giving higher ratings and reduction in volume and weight
Non Magnetic construction
Highly reliable low voltage , integrated trip indicator system
Microswitch reference MS 7V 1-5
Data Sheet. 125URxSxxxxB
Issue 1
Page 1 of 8
March, 2005
WESTCODE
An
IXYS Company
French Standard 600 to 1250V End Contact Fuses
Main Characteristics:
Current
rating
I
N
(A)
63
80
100
125
160
200
250
280
315
350
Pre-arcing
I
2
t @ 1 ms
I
2
t
p
(kA
2
s)
0.21
0.47
0.83
1.3
2.5
4.7
9.6
14.0
20.0
28
Tested
Interrupting
rating
Size
Voltage
U
N
(V)
Ref:
125UR0S0063B
125UR0S0080B
125UR0S0100B
Total Clearing
I
2
t @ U
N
(kA
2
s)
1.2
2.7
4.8
7.5
15
27
55
82
115
158
Watt Losses
0.8I
N
I
N
13
13.5
15
19
22.5
27
29
30.5
33
34
26
27
30
38
45
54
58
61
66
68
1250V
0
125UR0S0125B
125UR0S0160B
125UR0S0200B
125UR0S0250B
100kA @ 1250V
1200V
120UR0S0280B
120UR0S0315B
100kA @ 1200V
150kA @ 1100V
1100V
110UR0S0350B
Notes: Minimum operating voltage for integrated trip indicator = 20V
Microswitch reference : MS 7V 1-5
Size
Voltage
U
N
(V)
Ref:
125UR1S0160B
125UR1S0200B
125UR1S0250B
Current
rating
I
N
(A)
160
200
250
280
315
350
400
450
500
550
630
Pre-arcing
I
2
t @ 1 ms
I
2
t
p
(kA
2
s)
2.6
4.7
8.9
12
16
22
38
47
68
84
125
Total Clearing
I
2
t @ U
N
(kA
2
s)
15
27
51
68
92
127
220
270
390
485
725
Watt Losses
0.8I
N
I
N
23
27
30.5
34
36.5
38
38
43.5
45
49
52.5
46
54
61
68
73
76
76
87
90
98
105
Tested
Interrupting
rating
1250V 125UR1S0280B
125UR1S0315B
1
125UR1S0350B
125UR1S0400B
125UR1S0450B
110UR1S0500B
1100V
110UR1S0550B
110UR1S0630B
100kA @ 1250V
150kA @ 1100V
Notes: Minimum operating voltage for integrated trip indicator = 20V
Microswitch reference : MS 7V 1-5
Data Sheet. 125URxSxxxxB
Issue 1
Page 2 of 8
March, 2005
WESTCODE
An
IXYS Company
French Standard 600 to 1250V End Contact Fuses
Size
Voltage
U
N
(V)
Ref:
125UR2S0280B
125UR2S0315B
125UR2S0350B
Current
rating
I
N
(A)
280
315
350
400
450
500
550
630
700
800
Pre-arcing
I
2
t @ 1 ms
I
2
t
p
(kA
2
s)
10
15
21
32
44
57
68
105
145
215
Total Clearing
I
2
t @ U
N
(kA
2
s)
60
87
120
190
255
330
390
610
815
1240
Watt Losses
0.8I
N
I
N
36
38
38.5
40
46.5
47
55
56.5
61
62.5
72
76
77
80
87
94
110
113
122
125
Tested
Interrupting
rating
1250V 125UR2S0400B
2
125UR2S0450B
125UR2S0500B
125UR2S0550B
125UR2S0630B
1100V 110UR2S0700B
110UR2S0800B
100kA @ 1250V
150kA @ 1100V
Notes: Minimum operating voltage for integrated trip indicator = 20V
Microswitch reference : MS 7V 1-5
Size
Voltage
U
N
(V)
Ref:
125UR3S0315B
125UR3S0350B
125UR3S0400B
125UR3S0450B
Current
rating
I
N
(A)
315
350
400
450
500
550
630
700
800
900
1000
1100
1250
-
-
-
1400
1600
1800
Pre-arcing
I
2
t @ 1 ms
I
2
t
p
(kA
2
s)
12
17
25
35
44
57
84
110
190
250
370
445
585
755
1430
2040
Total Clearing
I
2
t @ U
N
(kA
2
s)
68
100
145
205
255
330
485
640
640
1090
2130
2430
3080
3700
5740
7150
Watt Losses
0.8I
N
I
N
42,0
43,0
46,5
49,5
55,0
58,8
62,5
67,5
68,0
75,0
76,0
84,0
93,0
105,0
-
-
84
86
93
99
110
116
125
135
136
150
152
168
186
210
203
206
Tested
Interrupting
rating
1250V
125UR3S0500B
125UR3S0550B
125UR3S0630B
100kA @1250V
3
1200V
1000V
950V
900V*
850V
690V
600V
125UR3S0700B
125UR3S0800B
120UR3S0900B
100UR3S1000B
095UR3S1100B
090UR3S1250B
085UR3S1400B
069UR3S1600B
100kA @1200V
150kA @1000V
150kA @950V
150kA @900V
150kA @850V
180kA @690V
120kA @600V
060UR3S1800B
* Not available with Blades
Notes: Minimum operating voltage for integrated trip indicator = 20V
Micro switch reference : MS 7V 1-5
Data Sheet. 125URxSxxxxB
Issue 1
Page 3 of 8
March, 2005
WESTCODE
An
IXYS Company
French Standard 600 to 1250V End Contact Fuses
Electrical Characteristics:
Times vs current characteristics
The following curves indicate the pre-arcing time for each rated current as a function of RMS value of
pre-arcing current I:
-
Tolerances on this current ± 8%
-
Beyond 30 sec, small overloads must be eliminated by another device.
Curve CC’ represents the maximum times taken by the associated device to clear small overloads; only its
horizontal line is represented. Its oblique line must be plotted according to sketch in top right corner:
- The intersection of the fuse and CC’ curves indicates the minimum breaking current I
pm
of the fuse.
Size 0
Size 1
Size 2
Size 3
Total clearing I²T:
Data Sheet. 125URxSxxxxB
Issue 1
Page 4 of 8
March, 2005
WESTCODE
An
IXYS Company
French Standard 600 to 1250V End Contact Fuses
The horizontal curves given below indicate the maximum values of total operating I
2
t (I
2
t
t
) as a function
of prospective current Ip @ 1000V or 850V, cosϕ = 0.15.
Oblique lines indicate the corresponding total operating time T
t
, with pre-arcing time in brackets.
Size 0
Size 1
Size 2
Size 3
Data Sheet. 125URxSxxxxB
Issue 1
Page 5 of 8
March, 2005
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