125LET [COOPER]
Electrical Characteristics, Total Clearing I2t, Arc Voltage, Power Losses; 电气特性，总结算的I2t ，电弧电压，功率损耗
| 型号： | 125LET |
| 厂家： | 
COOPER BUSSMANN, INC. |
| 描述： | Electrical Characteristics, Total Clearing I2t, Arc Voltage, Power Losses |
| 文件： | 总2页 (文件大小：49K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
®
Bu s s m a n n
Britis h Style BS 8 8
®
240V 6-900A
Electrical Characteristics
Ordering Information
Carton
Dimensions
Curves
BIF #
I2t (A2S)
Rated
Current
Clearing
at 120V
Clearing
at 240V
Watts
Loss
Part
Carton
Qty.
Weight
(kg)
Figure
Number
Type
RMS-Amps
Pre-arc
2
Number
6
10
6
12
9
22
1.0
2.5
6LCT
10LCT
3.8
LCT
12
16
7
20
22
50
32
100
2.5
2.5
12LCT
16LCT
20
0.110
Fig. 1
35785296
20
25
80
160
4.0
20LCT
25
18
120
250
4.0
25LET
32
32
200
450
5.0
32LET
35
50
320
600
5.0
35LET
50
100
500
1400
7.0
50LET
63
80
180
300
600
600
1100
1900
3800
3800
7000
12000
7000
10000
20000
35000
50000
70000
100000
35000
80000
150000
200000
300000
400000
2200
3800
7500
7500
9.0
63LET
80LET
LET
10
0.310
Fig. 2
35785293
10.0
10.0
16.0
20.0
21.0
17.0
28.0
28.0
35.0
35.0
40.0
42.0
60.0
64.0
75.0
77.0
82.0
97.0
100
125
160
180
160
200
250
315
355
400
450
400
500
630
710
800
900
100LET
125LET
160LET
180LET a
160LMT
200LMT
250LMT
315LMT
355LMT
400LMT
450LMT
400LMMT
500LMMT
630LMMT
710LMMT
800LMMT
900LMMT
1100
1600
1100
1500
3200
6000
8000
14000
18000
6000
14000
24000
32000
52000
75000
16000
29000
16000
20000
40000
75000
100000
160000
220000
80000
170000
300000
460000
600000
800000
Ⅲ 150 Vdc rating
LMT
1
1
0.180
0.370
Fig. 3
35785294
35785295
LMMT
Fig. 4
Ⅲ Interrupting rating 200kA RMS Symmetrical.
Ⅲ Watts loss provided at rated current.
1 kg = 2.2 lbs
1 lb = 0.45 kg
Ⅲ Note: 7LET, 10LET, 12LET and 16LET are available for replacement purposes on existing equipment.
Ⅲ All fuses above have been tested at 318 Vac.
See accesories on page 72.
Dim e ns ions
Fig. 1: LCT
Fig. 2: LET
4
7.1
5.5
28 38 47
26.2 41.8 56
9.7
6.4
12.7
17.7
19.1
8.4
8.7
Dimensions in mm.
1mm = 0.0394∑
1∑ = 25.4mm
Form No.
Page 1 of 2
SB01191
7-18-01
BIF Doc #720004
®
Bu s s m a n n
Britis h Style BS 8 8
240V 6-900A
®
Electrical Characteristics
Total Clearing I2t
Arc Voltage
Power Losses
The total clearing I2t at rated voltage and This curve gives the peak arc voltage,
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 .
at power factor of 15% are given in the
electrical characteristics. For other volt-
ages, the clearing I2t is found by multi-
plying by correction factor, K, given as
a function of applied working voltage,
Eg, (RMS).
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%.
1.6
K
1.0
Kp
750
UL
0.8
1.4
1.2
1.0
0.8
0.6
0.5
1)
500
0.4
0.3
2)
0.6
1)
0.4
0.2
250
0.2
2)
Ib
Eg
Eg
0.1
30 40 50 60
80 90 100%
70
50
100
150
200
250
100
200
300
1) LCT
1) LCT
2) LET, LMT, LMMT
2) LET, LMT, LMMT
Dimensions
25.4
25.4
Fig. 3: LMT
Fig. 4: LMMT
31 59 84
31
59
84
13.5
10.3
13.5
10.3
83
41
Indicator (Optional)
Dimensions in mm.
38.1
1mm = 0.0394∑
1∑ = 25.4mm
38
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.
Form No.
Page 2 of 2
SB01191
7-18-01
BIF Doc #720004
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