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High Speed Fuses
High Speed
Fuses
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 fac-
tor of 15%.
Power Losses
Watts loss at rated cur-
rent is given in the electri-
cal characteristics. The
curve allows the calcula-
tion 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.
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
Square body flush end contact — 690V (IEC):
1000-4000A
690V (IEC) 1000-4000A
Specifications
Description: Square body flush
end contact high speed fuses.
Dimensions: See dimensions
illustrations.
Ratings:
Volts: — 690Vac
Amps: — 1000-4000A
IR: — 200kA RMS Sym.
Agency Information: CE, Designed and tested to IEC
60269: Part 4, UL Recognized.
Electrical Characteristics
Total Clearing I2t
The total clearing I2t at
rated voltage and at power
factor of 15% are given in
the electrical characteris-
tics. For other voltages, the
clearing I2t is found by mul-
tiplying by correction fac-
tor, K, given as a function
of applied working voltage,
Eg, (rms).
K
1.5
1.0
0.5
0.4
0.3
0.2
Eg
1)
100 200 300 400 500 600 690
Kp
30 40 50 60 70 80 90 100%
Ib
1.0
0.8
0.4
0.5
0.6
0.3
0.2
0.1
1) Rated voltage 500V
UL
1.4
1.2
103
6
8
7
9
5
4
3
Eg
200 300 400 500 600 690
53
105
67
15
F
G
105
Ø4
Ø56
Dimensions (mm)
Type 4B/-, 4BKN/-, 4G/-, 4GKN/-
Size F (in) G
4B M10 10 deep 33
4G 1⁄2” -13 UNC-2B 10 deep 38
1mm = 0.0394” / 1” = 25.4mm
For product data sheets, visit www.cooperbussmann.com/products/datasheet.asp
154
High Speed Fuses
Square body flush end contact — 690V (IEC):
1000-4000A
1x103104105106
1x10–4
10–3
10–2
10–1
100
101
102
103
104
Prospective Current in Amperes RMS
Virtual Pre-Arcing Time In Seconds
1000A
1250A 1400A
1600A
2000A
2200A 2500A
3000A 3500A
4000A
A
A
Size 4 — 1000-4000A: 690V
Time-Current Curve
1x103104105106107
2x103
104
105
106
Prospective Short-Circuit Current Symmetrical RMS
Peak Let-Through Current
1000A 1250A
1400A 1600A
2000A 2200A
2500A 3000A
3500A
4000A
A
B
Peak Let-Through Curve
4000A fuse is derated to 500V (IEC).
Catalog Numbers
Catalog Numbers
-BKN/- -GKN/- Electrical Characteristics
-B/- Type K -G/- Type K Rated Current RMS I2t (A2 Sec) Watts Loss
Visual Indicator Visual Indicator Norm. Liquid Clearing Norm. Liquid
Indicator for Micro Indicator for Micro Size Cool. Cool. Pre-arc at 660V Cool. Cool.
170M7058 170M7078 170M7098 170M7118 4 1000 1350 76000 505000 175 315
170M7059 170M7079 170M7099 170M7119 1250 1700 145000 965000 195 355
170M7060 170M7080 170M7100 170M7120 1400 1900 205000 1400000 205 375
170M7061 170M7081 170M7101 170M7121 1600 2200 305000 2050000 220 405
170M7062 170M7082 170M7102 170M7122 2000 2700 600000 3950000 245 445
170M7063 170M7083 170M7103 170M7123 2500 3400 1200000 7800000 275 495
170M7064 170M7084 170M7104 170M7124 3000 4100 2000000 13500000 305 555
170M7065 170M7085 170M7105 170M7125 3500 4700 3250000 22000000 325 585
170M7066 170M7086 170M7106 170M7126 †4000 †5400 4700000 †28000000 355 640
†Rated voltage (IEC) 500V.
• Watts loss provided at rated current.
• Liquid Cool. = Liquid cooling. Temperature on the terminals not to exceed 60°C.
• Microswitch indicator ordered separately. See accessories on pages 179-180.
Data Sheet: 17056328
