Bussmann
®
Square Body – Flush End Contact
690V (IEC)
Rated
Current
RMS-
Norm.
Cool.
Rated
Current
RMS-
Liquid
Cool.
1000-4000A
Ordering Information
Watts
Loss
Norm.
Cool.
Watts
Loss
Liquid
Cool.
-BKN/-
Type K
Indicator
for Micro
-GKN/-
Type K
Indicator
for Micro
I
2
t (A
2
S)
®
Electrical Characteristics
Curves
Size
Pre-arc
Clearing
at 660V
-B/-
Visual
Indicator
-G/-
Visual
Indicator
Carton
Carton Weight
Qty.
(kg)
BIF #
4
1000
1250
1400
1600
2000
2500
3000
3500
†4000
1350
1700
1900
2200
2700
3400
4100
4700
†5400
76000
145000
205000
305000
600000
1200000
2000000
3250000
4700000
505000
965000
1400000
2050000
3950000
7800000
13500000
22000000
†28000000
175
195
205
220
245
275
305
325
355
315
355
375
405
445
495
555
585
640
170M7058
170M7059
170M7060
170M7061
170M7062
170M7063
170M7064
170M7065
170M7066
170M7078
170M7079
170M7080
170M7081
170M7082
170M7083
170M7084
170M7085
170M7086
170M7098
170M7099
170M7100
170M7101
170M7102
170M7103
170M7104
170M7105
170M7106
170M7118
170M7119
170M7120
170M7121
170M7122
170M7123
170M7124
170M7125
170M7126
2
1.80
17056328
Interrupting rating 200kA (Estimated 300kA) RMS Symmetrical.
Watts loss provided at rated current.
Rated voltage (IEC) †600V
Liquid Cool. = Liquid cooling. Temperature on the terminals not to exceed 60°C.
Microswitch indicator ordered separately.
1 kg = 2.2 lbs.
1 lb = 0.45 kg
7-11-01
SB01191
Form No.
Page 1 of 2
BIF Doc #720020
Bussmann
®
Square Body – Flush End Contact
690V (IEC)
1000-4000A
Arc Voltage
This curve gives the peak arc voltage,
U L , which may appear across the fuse
during its operation as a function of the
applied working voltage, E g , (RMS) at a
power factor of 15%.
®
Electrical Characteristics
Total Clearing I
2
t
The total clearing I
2
t at rated voltage and
at power factor of 15% are given in the
electrical characteristics. For other volt-
ages, the clearing I
2
t is found by multi-
plying by correction factor, K, given as
a function of applied working voltage,
E g , (RMS).
1.5
K
1.0
1)
Power Losses
Watts loss at rated current is given in
the electrical characteristics. The curve
allows the calculation of the power loss-
es at load currents lower than the rated
current. The correction factor, K p , is
given as a function of the RMS load cur-
rent, Ib , in % of the rated current .
1.0
K
p
0.8
0.6
0.5
0.4
0.3
0.2
0.5
0.4
0.3
0.2
E
g
100 200 300 400 500 600 690
1) Rated voltage 600V
1.4
1.2
10
3
9
8
7
6
5
4
3
U
L
E
g
200
300
400
500
600 690
0.1
30 40 50
60
70
I
b
80 90 100%
Dimensions
Flush End Contact: Type 4B/-, 4BKN/-, 4G/-, 4GKN/-
Size
4B
4G
F
M10 10 deep
⁄Ω™∑
-13 UNC-2B 10 deep
G
33
38
Dimension in mm.
1mm = 0.0394∑
1∑ = 25.4mm
105
F
Ø4
G
105
15
Ø56
53
67
The only controlled copy of this BIF document is the electronic read-only version located on the Bussmann Network Drive. All other copies of this document are by definition uncontrolled. This bulletin
is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Bussmann reserves the right, without notice, to change
design or construction of any products and to discontinue or limit distribution of any products. Bussmann also reserves the right to change or update, without notice, any technical information contained
in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications.
7-11-01
SB01191
Form No.
Page 2 of 2
BIF Doc #720020
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