High Speed Fuses
Square body flush end contact — 1250V/1300V (IEC/UL):
50-1400A
3
2.5
Arc Voltage
1250V/1300V (IEC/UL) 50-1400A
U
L
This curve gives the peak
Specifications
Description: Square body flush
end contact high speed fuses.
arc voltage, U , which may 1.8
L
1.4
appear across the fuse
during its operation as a
function of the applied
working voltage, E , (rms)
at a power factor of 15%.
103
8
Dimensions: See dimensions
illustrations.
6
5
g
Ratings:
Volts:— 1250Vac (IEC)
— 1300Vac (UL)
4
3
Eg
Power Losses
400 600
800 1000 1200 1400
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 correc-
Amps:— 50-1400A
IR:— 100kA RMS Sym.
1.0
0.8
Kp
Agency Information: CE, Designed and tested to IEC
60269: Part 4, UL Recognized. Consult Cooper Bussmann for
UL Recognition/CSA Component Acceptance status.
0.6
0.5
0.4
0.3
Electrical Characteristics
Total Clearing I2t
tion factor, K , is given as
p
0.2
a function of the RMS load
1.5
1.25
1.0
current, I , in % of the
2
b
The total clearing I t at rated
voltage and at power factor
of 15% are given in the elec-
trical characteristics. For
K
Ib
rated current.
0.1
30 40 50 60
80 90 100%
70
Features and Benefits
• Excellent dc performance
other voltages, the clearing
2
0.5
0.4
• Low arc voltage and low energy let-through (I t)
• Low watts loss
2
I t is found by multiplying by
correction factor, K, given as
a function of applied working
0.3
• Superior cycling capability
0.2
voltage, E , (rms).
Typical Applications
• DC common bus
• DC drives
• Power converters/rectifiers
• Reduced voltage starters
g
Eg
400 600 800 1000 1200 1400
Dashed lines (- - - - - -) apply to the
following amperages:.
Size
1*
1
Amps.
400A
500-630A
630-1000A
800-1400A
2
3
Dimensions (mm)
Type -BKN/-, -GKN/-
Size Type
A
B
D
E
F
M8
M8
M8
F** (in)
G
5
5
8
8
H
5
B
1*
1*
1
BKN + GKN/75 74
BKN/80 80
BKN + GKN/75 74
BKN/80 80
75
81
75
81
75
81
91
76
83
91
59
59
69
69
77
77
77
92
92
92
45
45
53
53
61
61
61
76
76
76
⁄16” - 18 UNC-2B
Ø17
Ø17
Ø20
Ø20
5
⁄16” - 18 UNC-2B
1
2
2
2
3
3
3
M8
3
BKN + GKN/75 74
BKN/80 80
BKN + GKN/90 80
BKN + GKN/75 74
BKN/80 81
M10
M10
M10
M12
M12
M12
⁄
8
” - 16 UNC-2B
10 Ø24
10 Ø24
10 Ø24
10 Ø30
10 Ø30
10 Ø30
3
⁄
8
” - 16 UNC-2B
1
2
⁄
” - 13 UNC-2B
1
BKN + GKN/90 81
⁄
2
” - 13 UNC-2B
**Valid for fuses type -GKN/-.
1mm = 0.0394” / 1” = 25.4mm
D
A
E
F
E
H
G
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
159