### COOPER 170M5766

```High Speed Fuses
Square Body US Style — 690V/700V (IEC):
40-2000A
690V/700V (IEC) 40-2000A
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%.
Specifications
Description: Square body US
style high speed fuses.
Dimensions: See dimensions
illustration.
Ratings:
Volts: — 690Vac (IEC)
— 700Vac (UL)
Amps: — 40-200A
IR: — 200kA RMS Sym.
Ag ency Information: CE, Designed and tested to IEC
60269: Part 4, UL Recognized. Consult Cooper Bussmann
for UL Recognition/ CSA Component Acceptance status.
Power Losses
Watts loss at rated current
is given in the electrical
characteristics. The curve
allows the calculation of
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.
Total Clearing I2t
1.5
K
2) 1)
1.0
0.5
0.4
0.3
•
•
•
•
Dimensions (mm)
Type -FU/-, -FKE/-, FU/115-, -FKE/115
B
110
136
135
135
B**
148
157
159
155
C1
85
104
105
106
C1**
123
126
125
125
4
Eg
200
C2
72
78
78
77
C2**
110
100
99
97
D
59
69
77
92
E
45
53
61
76
H
20
25
25
36
I
10
14
14
16
0.3
0.2
Ib
0.1
30 40 50
126
60
70
Typical Applications
DC common bus
DC drives
Power converters/rectifiers
Reduced voltage starters
For Other Voltage Ratings in This Body Style
• See pages 150 (1000V) and 164 (1250V/1300V)
A
C1
C2
I
600 690
0.4
6
E
500
0.6
0.5
B
E
400
1.0
Kp
0.8
**Valid for fuses type -FU/115 & -FKE/115.
1mm = 0.0394” / 1” = 25.4mm
D
300
0.2
1) Rated voltage 600V.
2) Rated voltage 550V
A
50
50
50
51
5
Features and Benefits
• Excellent DC performance
• Low arc voltage and low energy let-through (I2t)
• Low watts loss
• Superior cycling capability
100 200 300 400 500 600 690
Siz e
1*
1
2
3
UL
3
Electrical Characteristics
The total clearing I2t at rated
voltage and at power factor
of 15% are given in the
electrical characteristics. For
other voltages, the clearing
I2t is found by multiplying by
correction factor, K, given as
a function of applied working
voltage, Eg, (rms).
1.4
1.2
103
9
8
7
6
H
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa
80 90 100%
High Speed Fuses
Square Body US style — 690V/700V (IEC): 40-2000A
Catalog Numbers
-FKE/115
Type K
Indicator
for Micro
170M3758
170M3759
170M3760
170M3761
170M3762
170M3763
170M3764
170M3765
170M3766
170M3767
170M3768
170M3769
170M3770
170M3771
170M3772
170M3773
170M4758
170M4759
170M4760
170M4761
170M4762
170M4763
170M4764
170M4765
170M4766
170M4767
170M4768
170M4769
170M5758
170M5759
170M5760
170M5761
170M5762
170M5763
170M5764
170M5765
170M5766
170M5767
170M5768
170M6758
170M6759
170M6760
170M6761
170M6762
170M6763
170M6764
170M6765
170M6766
170M6767
170M6768
170M6769
170M6770
170M6771
Electrical Characteristics
Siz e
1*
1
2
3
Rated
Current
RMS-Amps
40
50
63
80
100
125
160
200
250
315
350
400
450
500
550
630
200
250
315
350
400
450
500
550
630
700
800
‡900
400
450
500
550
630
700
800
900
1000
1100
1250
500
550
630
700
800
900
1000
1100
1250
1400
1500
1600
†1800
‡2000
I2t (A2 Sec)
Clearing
Pre-arc
at 660V
40
270
77
515
115
770
185
1250
360
2450
550
3700
1100
7500
2200
15000
4200
28500
7000
46500
10000
68500
15000
105000
21000
140000
27000
180000
34000
230000
48500
325000
1650
11500
3100
21000
6200
42000
8500
59000
13500
91500
17000
120000
25000
170000
34000
230000
52000
350000
69500
465000
105000
725000
155000
‡850000
11000
74000
15500
105000
21500
145000
28000
190000
41000
275000
60500
405000
86000
575000
125000
840000
180000
1250000
245000
1600000
365000
2400000
14000
95000
19500
135000
31000
210000
44500
300000
69500
465000
100000
670000
140000
945000
190000
1300000
290000
1950000
370000
2450000
460000
3100000
580000
3900000
880000
†5250000
1150000
‡6350000
Watts
Loss
9
11
14
18
21
26
30
35
40
50
55
60
65
70
75
80
45
55
58
60
65
70
72
75
80
85
95
100
65
70
75
80
90
95
105
110
115
120
130
95
100
105
110
115
120
125
130
140
155
160
160
165
175
High Speed
Fuses
-FU/Without
Indicator
170M3608
170M3609
170M3610
170M3611
170M3612
170M3613
170M3614
170M3615
170M3616
170M3617
170M3618
170M3619
170M3620
170M3621
170M3622
170M3623
170M4608
170M4609
170M4610
170M4611
170M4612
170M4613
170M4614
170M4615
170M4616
170M4617
170M4618
170M4619
170M5608
170M5609
170M5610
170M5611
170M5612
170M5613
170M5614
170M5615
170M5616
170M5617
170M5618
170M6608
170M6609
170M6610
170M6611
170M6612
170M6613
170M6614
170M6615
170M6616
170M6617
170M6618
170M6619
170M6620
170M6621
Catalog Numbers
-FKE/Type K
-FU/115
Indicator
Without
for Micro
Indicator
170M3658
170M3708
170M3659
170M3709
170M3660
170M3710
170M3661
170M3711
170M3662
170M3712
170M3663
170M3713
170M3664
170M3714
170M3665
170M3715
170M3666
170M3716
170M3667
170M3717
170M3668
170M3718
170M3669
170M3719
170M3670
170M3720
170M3671
170M3721
170M3672
170M3722
170M3673
170M3723
170M4658
170M4708
170M4659
170M4709
170M4660
170M4710
170M4661
170M4711
170M4662
170M4712
170M4663
170M4713
170M4664
170M4714
170M4665
170M4715
170M4666
170M4716
170M4667
170M4717
170M4668
170M4718
170M4669
170M4719
170M5658
170M5708
170M5659
170M5709
170M5660
170M5710
170M5661
170M5711
170M5662
170M5712
170M5663
170M5713
170M5664
170M5714
170M5665
170M5715
170M5666
170M5716
170M5667
170M5717
170M5668
170M5718
170M6658
170M6708
170M6659
170M6709
170M6660
170M6710
170M6661
170M6711
170M6662
170M6712
170M6663
170M6713
170M6664
170M6714
170M6665
170M6715
170M6666
170M6716
170M6667
170M6717
170M6668
170M6718
170M6669
170M6719
170M6670
170M6720
170M6671
170M6721
†Rated voltage (IEC) 600V.
‡Rated voltage (IEC) 550V.
• Watts loss provided at rated current.
• Microswitch indicator ordered separately. See accessories on pages 185-186.
• For fuse curves see pages 130 and 131.
For product data sheets, visit www.cooperbussmann.com/datasheets/ulcsa
127
```