High Speed Fuses
Square body DIN 43 653 — 1250V/1300V (IEC/UL):
50-1400A
1250V/1300V (IEC/UL) 50-1400A
Specifications
Description: Square body DIN 43
653 stud-mount high speed fuses.
Dimensions:
See dimensions
illustration.
Ratings:
Volts: —
—
Amps: —
IR: —
1250Vac (IEC)
1300Vac (UL)
50-1400A
100kA RMS Sym.
Arc Voltage
This curve gives the peak
arc voltage, UL, which may
1.8
1.4
appear across the fuse
during its operation as a
10
3
8
function of the applied
working voltage, Eg, (rms)
6
at a power factor of 15%.
5
4
3
2.5
UL
Power Losses
3
400
K
p
600
800
E
g
1000 1200 1400
Agency Information:
CE, Designed and tested to IEC
60269: Part 4, UL Recognized. Consult Cooper Bussmann for
UL Recognition/CSA Component Acceptance status.
Electrical Characteristics
Total Clearing I
2
t
2
The total clearing I t at
rated voltage and at power
factor of 15% are given in
the electrical characteris-
0.5
tics. For other voltages, the
0.4
clearing I
2
t is found by mul-
0.3
tiplying by correction factor,
K, given as a function of
0.2
applied working voltage,
400
Eg, (rms).
1.5
K
1.25
1.0
Watts loss at rated current
1.0
is given in the electrical
characteristics. The curve
0.8
0.6
allows the calculation of
0.5
the power losses at load
0.4
currents lower than the
rated current. The correc-
0.3
tion factor, Kp, is given as
0.2
a function of the RMS load
current, Ib, in % of the
rated current.
0.1
I
b
30 40 50
60
70
80 90 100%
Features and Benefits
• Excellent dc performance
• Low arc voltage and low energy let-through (I
2
t)
• Low watts loss
• Superior cycling capability
E
g
600 800 1000 1200 1400
Dashed lines (- - - - - -) apply to the
following amperages:.
Size
Amps.
1*
400A
1
500-630A
2
630-1000A
3
800-1400A
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters
Dimensions (mm)
Type -KN/110.
Size
1*
1
2
3
A
80
80
80
81
B
138
138
138
139
D
58
66
75
90
E
45
53
61
76
H
20
25
25
30
1mm = 0.0394” / 1” = 25.4mm
C
A
H
11
D
E
B
6
E
132
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
High Speed Fuses
Square body DIN 43 653 — 1250V/1300V (IEC/UL):
50-1400A
Catalog Numbers
Catalog Numbers
-KN/110
Type K
Visual
Indicator
for Micro
Size
170M3238
1*
170M3239
170M3240
170M3241
170M3242
170M3243
170M3244
170M3245
170M3246
170M3247
170M3248
170M4238
1
170M4239
170M4240
170M4241
170M4242
170M4243
170M4244
170M4245
170M4246
170M4247
170M5238
2
170M5239
170M5240
170M5241
170M5242
170M5243
170M5244
170M5245
170M5246
170M5247
170M5248
170M5249
170M5250
170M6238
3
170M6239
170M6240
170M6241
170M6242
170M6243
170M6244
170M6245
170M6246
170M6247
170M6248
170M6249
170M6250
170M6251
Electrical Characteristics
Rated
I2t (A2 Sec)
Current
Clearing
RMS-Amps Pre-arc at 1000V
50
135
815
63
215
1300
80
420
2500
100
750
4450
125
1450
9000
160
2600
16000
200
5150
31000
250
9200
54500
315
18500
115000
350
27000
165000
400
53000
265000
160
1900
11500
200
3800
22500
250
7750
46000
315
15000
90000
350
20000
125000
400
29500
175000
450
42000
250000
500
69500
340000
550
95000
465000
†630
130000
660000
250
6500
38500
280
9350
55500
315
13000
77500
350
16500
97500
400
23000
140000
450
34000
205000
500
48000
285000
550
62000
370000
630
115000
575000
700
160000
795000
800
245000 1200000
†900
360000 1750000
†1000
480000 2350000
315
9500
58000
350
13500
81500
400
19500
120000
450
31000
185000
500
39000
235000
550
55000
325000
630
83500
495000
700
115000
705000
‡800
205000
995000
‡900
305000 1500000
‡1000
450000 2150000
‡1100
575000 2800000
†1250
810000 3950000
†1400
1250000 6000000
Clearing
at 1250V
1100
1750
3350
5950
11500
21000
41000
73000
150000
220000
335000
15500
30000
61500
120000
165000
235000
335000
435000
590000
51500
74500
105000
135000
180000
270000
380000
495000
730000
1050000
1550000
77500
110000
160000
245000
310000
435000
665000
940000
1300000
1900000
2750000
3600000
Watts
Loss
15
20
25
30
35
40
45
55
60
65
70
45
50
60
65
70
75
80
85
95
100
65
70
75
80
85
90
95
100
110
115
120
125
135
85
90
95
100
105
110
115
120
125
130
135
140
145
150
High Speed
Fuses
†Rated voltage (IEC) 1100V.
‡Rated voltage (IEC) 1250V.
• Watts loss provided at rated current.
• Microswitch indicator ordered separately. See accessories on pages 179-180.
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
133
High Speed Fuses
Square body DIN 43 653 — 1250V/1300V (IEC/UL):
50-1400A
Size 1* — 50-400A:1250V
Time-Current Curve
Size 1 — 160-630A: 1250V
Time-Current Curve
160A
200A
250A
315A
350A
400A
450A
500A 550A
630A
A
Virtual Pre-Arcing Time In Seconds
10
1
A
1x10
2
10
3
10
4
Prospective Current In Amperes RMS
10
4
10
3
10
2
10
0
10
–1
10
–2
10
–3
1x10
–4
10
5
Peak Let-Through Curve
10
5
B
Peak Let-Through Curve
10
5
B
400A
350A
315A
250A
200A
160A
125A
100A
80A
63A
50A
630A
550A
500A
450A
400A
350A
315A
250A
200A
160A
10
4
Peak Let-Through Current
10
4
10
3
Peak Let-Through In Amperes
10
3
A
2x10
2
1x10
2
10
3
10
4
10
5
Prospective Short-Circuit Current Symmetrical RMS
10
6
A
2x10
2
1x10
2
10
3
10
4
10
5
Prospective Short-Circuit Current Symmetrical RMS
10
6
630A fuse is derated to 1100V (IEC).
Data Sheet: 17056630
Data Sheet: 17056632
134
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
High Speed Fuses
Square body DIN 43 653 — 1250V/1300V (IEC/UL):
50-1400A
Size 2 — 250-1000A: 1250V
Time-Current Curve
250A
280A
315A 350A
400A
450A
500A 550A
630A
700A
800A
900A
1000A
Size 3 — 315-1400A: 1250V
Time-Current Curve
10
4
10
3
10
2
A
Virtual Pre-Arcing Time In Seconds
A
High Speed
Fuses
10
1
10
0
10
–1
10
–2
10
–3
1x10
–4
1x10
2
10
3
10
4
Prospective Current In Amperes RMS
10
5
Peak Let-Through Curve
10
5
Peak Let-Through Curve
10
5
1400A
B
Peak Let-Through Current
Peak Let-Through Current
1000A
900A
800A
700A
630A
550A
500A
450A
400A
315A 350A
280A
250A
B
1250A
1100A
1000A
900A
800A
700A
630A
550A
500A 450A
400A
350A
315A
10
4
10
4
10
3
10
3
A
A
2x10
2
2x10
2
1x10
2
10
3
10
4
10
5
Prospective Short-Circuit Current Symmetrical RMS
10
6
1x10
2
10
3
10
4
10
5
Prospective Short-Circuit Current Symmetrical RMS
10
6
900-1000A fuses are derated to 1100V (IEC).
1250-1400A fuses are derated to 1100V (IEC).
Data Sheet: 17056634
Data Sheet: 17056636
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
135
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