High Speed Fuses
Square body DIN 43 653 — 1000V (IEC): 50-1400A
1000V (IEC) 50-1400A
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 mount
high speed fuses.
Dimensions: See dimensions
illustrations.
Ratings:
Volts: — 1000Vac.
Amps:— 50-1400A
IR: — 150kA RMS Sym.
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.
Electrical Characteristics
Total clearing I2t
1,5
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).
1,0
K
*
0,5
B
138
138
138
139
C
108
108
108
108
4
Eg
500
1,0
0,8
0,7
0,6
0,5
600
0,2
Eg
500
600
700
800
900
1000
0,2
0,15
0,1
30
Ib
40
50
60
70
•
•
•
•
Features and Benefits
Excellent dc performance
Low arc voltage and low energy let-through (I2t)
Low watts loss
Superior cycling capability
Typical Applications
DC common bus
DC drives
Power converters/rectifiers
Reduced voltage starters
*Rated voltage 900V
Max D1 E
61
43
69
51
77
59
92
74
G
6
6
6
6
H
22
25
25
30
I.
11
11
11
11
Max D2 E
61
43
69
51
75
59
90
74
G
6
6
6
6
H
22
25
25
30
1000
0,3
•
•
•
•
0,3
900
0,4
Type-KN/110
I
11
11
11
11
Type-TN/110
124
800
Kp
Type –TN/110
Size
A
B
C
1*TN/110 80 138
108
1TN/110 80 138
108
2TN/110 80 138
108
3TN/110 81 139
108
1mm = 0.0394” / 1” = 25.4mm
700
0,4
Dimensions (mm)
Type –KN/110
A
80
80
80
81
8
7
6
5
3
Power Losses
Agency Information: CE, Designed and tested to IEC
60269: Part 4, UL Recognized.
Size
1*KN/110
1KN/110
2KN/110
3KN/110
3
UL
2,5
2
1,8
1,6
1,4
1,2
103
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
80
90 100%