Rated voltage (IEC) †600V ‡550V (Consult Bussmann for U.L. Recognition/ CSA Component Acceptance status.)
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 #720015
Bussmann
Square Body – DIN 43 653
®
690V/700V (IEC/U.L.)
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
2) 1)
40-2000A
R
®
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%.
Power Losses
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, K
p
,
is given as a function of the RMS load
current, I
b
, 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
2) Rated voltage 550V
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
DIN 43 653: Type -KN/80, -KN/110
Size
1*
1
2
3
A
50
50
50
51
B
104
108
108
109
B§
134
138
138
139
C
78
78
78
78
C§
108
108
108
108
D
59
69
77
92
E
45
53
61
76
H
22
25
25
30
C
A
§Valid for fuse type -KN/110.
Dimension in mm.
1mm = 0.0394∑
1∑ = 25.4mm
H
11
D
E
B
6
E
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.
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