Square Body – Flush End Contact
1250V/1300V (IEC/U.L.)
50-1400A(-BKN/80 Type K Indicator)
®
Ordering info
1 kg = 2.2 lbs.
1 lb = 0.45 kg
Estimated Interrupting Rating 300kA RMS Symmetrical.
Watts loss provided at rated current.
Rated voltage (IEC) †1100V ‡1000V (Consult Bussmann for U.L. Recognition status.)
Individual Fuse Weight: Size 1* = 0.380 kg
Size 1 = 0.580 kg
Size 2 = 0.900 kg
Size 3 = 1.250 kg
For more information please contact our agent :
SOUTH CHINA ENTERPRISES (H.K.) LTD. Tel : (852)2790 1991 Fax : (852)2372 0008 Email : info@scehk.com
Square Body – Flush End Contact
1250V/1300V (IEC/U.L.)
50-1400A
®
Electrical Characteristics
Total Clearing I2t
The total clearing I2t at rated voltage and
at power factor of 15% are given in the
electrical characteristics. For other voltages, the clearing I2t is found by multiplying by correction factor, K, given as
a function of applied working voltage,
E g , (RMS).
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, Ib , in % of the rated current .
1.5
K
1.25
1.0
3
2.5
1.0
Kp
0.8
UL
0.6
0.5
1.8
1.4
0.4
0.5
0.4
103
8
0.3
0.3
6
5
0.2
0.2
4
Eg
400
600
800
Eg
3
400
1000 1200 1400
600
800
Ib
0.1
30 40 50
1000 1200 1400
60
70
80 90 100%
-----Dashed lines apply to the following amperages:
Size
Amp
1*
400
1
500-630
2
630-1000
3
800-1400
Dimensions
Flush End Contact: Type -BKN/-, -GKN/-
B
D
A
E
F
E
H
G
Size
1*
1*
1
1
2
2
2
3
3
3
Type
BKN + GKN/75
BKN/80
BKN + GKN/75
BKN/80
BKN + GKN/75
BKN/80
BKN + GKN/90
BKN + GKN/75
BKN/80
BKN + GKN/90
A
74
80
74
80
74
80
80
74
81
81
B
75
81
75
81
75
81
91
76
83
91
D
59
59
69
69
77
77
77
92
92
92
E
45
45
53
53
61
61
61
76
76
76
F
M8
M8
M8
M8
M10
M10
M10
M12
M12
M12
F§
fiΩ¡§∑ - 18 UNC-2B
fiΩ¡§∑ - 18 UNC-2B
‹Ω•∑ - 16 UNC-2B
‹Ω•∑ - 16 UNC-2B
⁄Ω™∑ - 13 UNC-2B
⁄Ω™∑ - 13 UNC-2B
G
5
5
8
8
10
10
10
10
10
10
H
Ø17
Ø17
Ø20
Ø20
Ø24
Ø24
Ø24
Ø30
Ø30
Ø30
§
Valid for fuses type -GK/Dimension in mm.
1mm = 0.0394∑
1∑ = 25.4mm
For more information please contact our agent :
SOUTH CHINA ENTERPRISES (H.K.) LTD. Tel : (852)2790 1991 Fax : (852)2372 0008 Email : info@scehk.com
Square Body – Flush End Contact
1250V/1300V (IEC/U.L.)
50-1400A
®
Size 1: 1250V (160-630)A
Time-Current Curve
160A
200A
250A
315A
350A
400A
450A
500A 550A
630A
Size 1*: 1250V (50-400)A
Time-Current Curve
104
103
102
Virtual Pre-Arcing Time In Seconds
A
A
101
100
10–1
10–2
10–3
1x10–4
Peak Let-Through Curve
10
1x102
105
B
400A
350A
315A
250A
200A
160A
125A
100A
80A
63A
50A
104
Peak Let-Through In Amperes
Peak Let-Through Current
105
Peak Let-Through Curve
5
B
630A
550A
500A
450A
400A
350A
315A
250A
200A
160A
104
103
103
A
A
2x10
103
104
Prospective Current In Amperes RMS
2x102
2
1x102
103
104
105
Prospective Short-Circuit Current Symmetrical RMS
106
1x102
103
104
105
Prospective Short-Circuit Current Symmetrical RMS
106
630 amp fuse is derated to 1100V (IEC).
For more information please contact our agent :
SOUTH CHINA ENTERPRISES (H.K.) LTD. Tel : (852)2790 1991 Fax : (852)2372 0008 Email : info@scehk.com
Square Body – Flush End Contact
1250V/1300V (IEC/U.L.)
50-1400A
®
Size 3: 1250V (315-1400)A
Time-Current Curve
Time-Current Curve
250A
280A
315A 350A
400A
450A
500A 550A
630A
700A
800A
900A
1000A
Size 2: 1250V (250-1000)A
104
103
102
Virtual Pre-Arcing Time In Seconds
A
A
101
100
10–1
10–2
10–3
1x10–4
1x102
103
104
Prospective Current In Amperes RMS
105
Peak Let-Through Curve
Peak Let-Through Curve
105
1000A
900A
800A
700A
630A
550A
500A
450A
400A
315A 350A
280A
250A
104
103
B
1250A
1100A
1000A
900A
800A
700A
630A
550A
500A 450A
400A
350A
315A
104
103
A
2x10
1400A
105
Peak Let-Through Current
Peak Let-Through Current
B
A
2
1x10
2
3
4
10
10
10
Prospective Short-Circuit Current Symmetrical RMS
5
900-1000 amp fuses are derated to 1100V (IEC).
6
10
2x10
2
1x102
103
104
105
Prospective Short-Circuit Current Symmetrical RMS
106
1250-1400 amp fuses are derated to 1100V (IEC).
For more information please contact our agent :
SOUTH CHINA ENTERPRISES (H.K.) LTD. Tel : (852)2790 1991 Fax : (852)2372 0008 Email : info@scehk.com