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参数资料
| 型号： | 550FMM |
| 元件分类： | 保险丝 |
| 英文描述： | Fuse |
| 中文描述： | 保险丝 |
| 文件页数： | 2/2页 |
| 文件大小： | 42K |
| 代理商： | 550FMM |
Form No.
Page 2 of 2
BIF Doc #720024
Bussmann
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.
British Style BS 88
690V
6-700A
Total Clearing I2t
The total clearing I
2t at rated voltage and
at power factor of 15% are given in the
electrical characteristics. For other volt-
ages, the clearing I
2t is found by multi-
plying by correction factor, K , given as
a function of applied working voltage,
Eg, (RMS).
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%.
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, Kp ,
is given as a function of the RMS load
current, Ib , in % of the rated current .
Electrical Characteristics
Dimensions
200
300
400
500
600 660
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1)
2)
E
g
K
1500
1000
500
200
400
600 660
E
g
U
L
1)
2)
Kp
1.0
0.8
0.4
0.5
0.6
0.3
0.2
0.1
30 40 50
60
70
80 90 100%
I
b
77
63.5
48
17.1
19.1
12.7
7.1
9.7
94
70
46
37
19
31.8
8.7
11.9
113
A
50
41
38.1
25.4
10.3
13.5
113
A
50
83
38
25.4
10.3
14
Fig. 2: ET, FE
74.6
64.3
54.8
6.4
8.7
4
5.5
Fig. 1: CT
Fig. 3: EET, FEE
Fig. 4: FM, MT
Fig. 5: FMM, MMT
Dimensions in mm.
1mm = 0.0394∑
1∑ = 25.4mm
1) CT, ET, EET, FE, FEE, MT, MMT
2) FM, FMM
1) CT
2) ET, FE, EET, FEE, FM, FMM
“A”
Type
Dimension
FM
80-85
FMM
80-85
MT
85
MMT
85
1-17-01
SB00233
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