High Speed Fuses
Square body flush end contact — 1000V (IEC): 50–1400A
1000V (IEC) 50–1400A
Specifications
Description:
Square body flush
end contact high speed fuses.
Dimensions:
See dimensions
illustration.
Ratings:
Volts: — 1000Vac.
Amps: — 50-1400A
IR: — 150kA (Est.300kA) RMS Sym.
Agency Information:
CE, Designed and tested to IEC
60269: Part 4, UL Recognized.
Electrical Characteristics
Total clearing I
2
t
The total clearing I t at
rated voltage and at power
factor of 15% are given
in the electrical
characteristics. For other
voltages, the clearing I
2
t is
found by multiplying by
correction factor, K, given
as a function of applied
working voltage, Eg, (rms).
2
Arc Voltage
This curve gives the peak
arc voltage, UL, which may
appear across the fuse
during its operation as a
function of the applied
working voltage Eg, (rms)
at a power factor of 15%.
Power Losses
Watts loss at rated current
is given in the electrical
characteristics. The curve
allows the calculation of
the power losses at load
currents lower than the
rated current. The
correction factor, Kp, is
given as a function of the
RMS load current, Ib, in %
of the rated current.
3
U
L
2,5
2
1,8
1,6
1,4
1,2
10
3
8
7
6
5
4
3
500
1,0
0,8
0,7
0,6
0,5
0,4
0,3
0,2
0,15
0,1
30
600
700
800
900
Eg
1000
K
p
High Speed
Fuses
1,5
1,0
K
*
I
b
40
50
60
70
80
90 100%
0,5
0,4
0,3
0,2
Eg
500
600
700
800
900
1000
Features and Benefits
• Excellent dc performance
• Low arc voltage and low energy let-through (I
2
t)
• Low watts loss
• Superior cycling capability
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters
*Rated voltage 900V
Dimensions (mm)
Type –BKN/- and –GKN/-
Size
Size
A
1*
BKN/75+GKN/75
72.5
1
BKN/75+GKN/75
73.2
2
BKN/75+GKN/75
73.2
3
BKN/75+GKN/75
73.3
3
BKN/90+GKN/90
80.3
** Valid for fuses type –GKN/-.
1mm = 0.0394” / 1” = 25.4mm
B
74
74
74.4
75.4
91.4
Max D
61
69
77
92
92
E
43
52
59
74
74
F
M8
M8
M10
M12
M12
F** (in)
5
⁄
16
” – 18 UNC-2B
5
⁄
16
” – 18 UNC-2B
3
⁄
8
” – 16 UNC-2B
1
⁄
2
” – 13 UNC-2B
1
⁄
2
” – 13 UNC-2B
Min G
5
8
10
10
10
H
ø17.5
ø20
ø24
ø30
ø30
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
155
High Speed Fuses
Square body flush end contact — 1000V (IEC): 50–1400A
Catalog Numbers
Catalog Numbers
-BKN/-
-GKN/-
Type K
Type K
Indicator for Indicator for
Micro
Micro
Size
170M3951
170M3921
1*
170M3952
170M3922
170M3953
170M3923
170M3954
170M3924
170M3955
170M3925
170M3956
170M3926
170M3957
170M3927
170M3958
170M3928
170M3959
170M3929
170M3960
170M3930
170M3961
170M3931
170M4951
170M4921
1
170M4952
170M4922
170M4953
170M4923
170M4954
170M4924
170M4955
170M4925
170M4956
170M4926
170M4957
170M4927
170M4958
170M4928
170M4959
170M4929
170M4960
170M4930
170M5952
170M5922
2
170M5953
170M5923
170M5954
170M5924
170M5955
170M5925
170M5956
170M5926
170M5957
170M5927
170M5958
170M5928
170M5959
170M5929
170M5960
170M5930
170M5961
170M5931
170M8600
170M8500
3
170M8601
170M8501
170M8602
170M8502
170M8603
170M8503
170M8604
170M8504
170M8605
170M8505
170M8606
170M8506
170M8607
170M8507
170M8608
170M8508
170M8609
170M8509
170M8610
170M8510
170M8611
170M8511
170M8612** 170M8512**
170M8613** 170M8513**
Electrical Characteristics
I
2
t (A
2
Sec)
Rated
Clearing
Current
at Rated
RMS-Amps Pre-arc
Voltage
50
135
815
63
215
1300
80
460
2750
100
860
5100
125
1450
8600
160
2850
17500
200
4950
29500
250
9550
57000
315
21500
130000
350
29000
175000
400
42000
250000
160
2200
13500
200
4150
24500
250
7750
46000
315
16500
98500
350
21500
130000
400
31000
185000
450
44500
265000
500
63000
375000
550
84500
500000
630
125000
755000
250
6750
40000
315
13500
81500
350
16500
99000
400
26000
155000
450
35500
210000
500
49500
295000
550
66000
390000
630
93500
555000
700
130000
770000
800
195000
1200000
315
9200
54500
350
13000
77500
400
19000
115000
450
27000
160000
500
37500
225000
550
52000
310000
630
82500
490000
700
115000
700000
800
170000
1050000
900
250000
1500000
1000
340000
2050000
1100
460000
2750000
1250
575000
3400000
1400
795000
4200000
Rated
Voltage
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
1000
900
Watts
Loss
20
25
30
35
40
45
48
50
60
65
70
40
45
52
60
65
70
80
85
90
98
65
75
80
85
90
95
100
110
115
125
90
95
105
107
110
115
120
125
135
145
150
155
175
185
**Overall length is 90mm, for all other fuses the overall length is 75mm.
• Watts loss provided at rated current.
• Microswitch ordered separately. See accessories on page 179-180.
156
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
High Speed Fuses
Square body flush end contact — 1000V (IEC): 50–1400A
Size 1* — 50-400A: 1000V
Time-Current Curve
Size 1 — 160-630A: 1000V
Time-Current Curve
10
4
10
3
10
2
Virtual Pre-arcing Time In Seconds
Virtual Pre-arcing Time In Seconds
10
High Speed
Fuses
1s
1
s
630A
500A
400A
315A
200A
125A
50A
200A
80A
400A
315A
10
-1
10
-1
550A
450A
350A
250A
160A
160A
63A
250A
350A
100A
10
-2
10
-2
10
-3
10
-3
10
-4
5x10
1
10
2
10
3
10
4
5x10
4
10
-4
10
2
10
3
10
4
10
5
Prospective Current In Ampere RMS
Prospective Current In Ampere RMS
Peak Let-Through Curve
Peak Let-Through Curve
10
5
630A 550A
A
500A 450
0A
400A 35
A
315 50A
2
10
5
Peak Let-Through Current In Amperes
250A 200A
Peak Let-Through Current In Amperes
400A
A
350A 315
160A 125A
100A 80A
630A 50A
10
4
10
4
200A 160A
10
3
10
3
2x10
2
10
2
10
3
10
4
10
5
Amp
10
6
2x10
2
10
2
10
3
10
4
10
5
Amp
10
6
Prospective Short-Circuit Current symmetrical RMS
Prospective Short-Circuit Current symmetrical RMS
Data Sheet: 17058564
Data Sheet: 17058566
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
157
High Speed Fuses
Square body flush end contact — 1000V (IEC): 50–1400A
Size 2 — 250-800A: 1000V
Time-Current Curve
Size 3 — 315-1400A: 1000V
Time-Current Curve
10
4
10
4
10
3
10
3
10
2
Virtual Pre-arcing Time In Seconds
Virtual Pre-arcing Time In Seconds
10
2
10
10
1
s
700A
550A
450A
350A
1
s
250A
*
1400A
1250A
1100A
1000A
900A
800A
700A
630A
550A
500A
450A
400A
350A
315A
10
-1
800A
630A
500A
400A
315A
10
-1
10
-2
10
-2
10
-3
10
-3
10
-4
10
2
10
3
10
4
10
5
10
-4
10
2
10
3
10
4
10
5
Prospective Current In Ampere RMS
Prospective Current In Ampere RMS
Peak Let-Through Curve
10
5
800A
630A
500A
400A
315A
700A
550A
450A
350A
250A
Peak Let-Through Curve
10
5
Peak Let-Through Current In Amperes
10
4
Peak Let-Through Current In Amperes
A
1400 A
1100
900A
700A
550A
450A
350A
*
1250A
A
1000
800A
630A
500A
400A
315A
10
4
10
3
10
3
2x10
2
10
2
10
3
10
4
10
5
Amp
10
6
2x10
2
10
2
10
3
10
4
10
5
Amp
10
6
Prospective Short-Circuit Current symmetrical RMS
Prospective Short-Circuit Current symmetrical RMS
* 1400A fuses are derated to 900V
Data Sheet: 17058568
Data Sheet: 17058570
158
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
