High Current Fuses
BF2 Fuses Rated 32V
This BF2 fuse is rated at 32V and offers a bolt-on fuse for high current wiring protection.
Current rating 100A - 500A; with transparent housing material for easy detection of
blown fuses.
Specifications
Voltage Rating:
Interrupting Ratings:
Recommended Environmental Temperature:
Terminals Material:
Housing Material:
Clear Housing Material:
Mounting Torque M8:
Mounting Torque M6:
Refers to:
BF2 Fuses
32 VDC
100A - 300A: 2000A @ 32 VDC
400A - 500A: 1500A @ 32 VDC
-40˚C to + 125˚C
Tin plated copper alloy
PET-GF33 (U.L. 94 Flammability rating – V0)
PES (U.L. 94 Flammability rating – V0)
12.0 Nm +/- 1Nm
6.0 Nm +/- 1Nm
ISO 8820-5:2015, UL 248 Special Purpose
Time Current Characteristics
Ordering Information
Part Number
Rating
Package
Size
% of Rating
153.5395.xxxx
100 - 500
200
M6 Holes
153.7011.xxxx
Time-Current Characteristic Curves
100 - 500
200
100A
125A
150A
175A
200A
225A
250A
300A
400A
500A
TIME-CURRENT CHARACTERISTIC CURVES (RECORDED@23°C)
1000
100A - 250A
300A - 500A
–/–
14,400 / ∞
100
14,400 / ∞
–/–
135
120 / 1,800
–/–
200
1 / 15
1 / 15
350
0.3 / 5
0.5 / 5
600
0.1 / 1
0.1 / 1
75
Standard M8 Holes
Opening Time Min / Max (s)
Ratings
TIME [s]
100
10
1
Test Cable
Size (mm2)
Typ. Voltage
Drop (mV)
Typ. Cold
Resistance
(mΩ)
100
16
102
0.70
46,800
125
25
81
0.52
118,100
153.xxxx.6152
150
25
77
0.42
113,400
153.xxxx.6172
175
25
104
0.36
154,400
153.xxxx.6202
200
35
102
0.34
288,000
153.xxxx.6222
225
35
107
0.29
236,000
Part Number
Current
Rating
(A)
153.xxxx.6102
153.xxxx.6122
Housing
Color
Typ. I2t
(A2s)
153.xxxx.6252
250
50
86
0.25
292,500
153.xxxx.63021
300
70
68
0.21
486,000
153.xxxx.6402
1
400
70
70
0.13
964,000
153.xxxx.65021
500
70
60
0.12
1,449,000
0,1
10
100
1000
CURRENT [A]
100A-300A: FL=1,25 (max. operating current: 0,8 x Irat at 23°C)
10000
Note 1: Short Circuit Protector only
The typical I2t is an average value calculated from the breaking capacity tests by using the melting time before the arcing occurs.
400A-500A: FL=2,00 (max. operating current: 0,5 x Irat at 23°C)
REV07272021
Littelfuse ® products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for
surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse ®
product documentation. Warranties granted by Littelfuse ® shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse ® documentation. Littelfuse ® shall not be liable for any claims or
damages arising out of products used in applications not expressly intended by Littelfuse ® as set forth in applicable Littelfuse ® documentation. The sale and use of Littelfuse ® products is subject to Littelfuse Terms and Conditions of
Sale, unless otherwise agreed by Littelfuse ®.
45
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High Current Fuses
BF2 Fuse Rated 32V
Dimensions
Dimensions in mm for reference only. See outline drawing for dimensions and tolerances
67.3
51
29
16.3
M8: ø 8.5
M6: ø 6.5
0.5 (100-125A)
0.8 (150-200A)
1.0 (225-300A)
1.5 (400-500A)
9.3 (100-200A)
9.4 (225-300A)
10 (400- 500A)
Temperature Table
Typical Derating of Fuse Melting Element
max. allowed current load [A] at ambient temperature (typical derating)
Temperature Security Margin is 20%
Please contact Littelfuse® for Details Regarding Derating Test Set-Up.
Max. Allowed Current Load [A]
WITH CURRENT TAB NAMES
300
290
280
270
260
250
240
230
220
210
200
190
180
170
160
150
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
100A
125A
Max Recommended
Environmental
Temperature
150A
175A
200A
225A
250A
-40
-30
-20
-10
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
-40°C
0°C
20°C
65°C
85°C
110°C
125°C
100A
100
96
91
76
69
58
50
125A
125
115
108
90
80
67
58
150A
150
138
130
109
99
83
73
175A
167
151
142
120
108
92
80
200A
189
171
161
135
122
103
90
225A
200
180
170
143
129
109
94
250A
250
250
244
200
177
145
123
300A
225
225
225
201
181
153
133
400A
300
300
300
262
236
198
172
500A
364
329
311
263
238
202
177
180
Ambient Temperature [°C]
Derating curves may change depending on the final condition of the application
(terminals characteristics, wire size etc..).
Please ask Littelfuse for more information.
400
300A
380
360
400A
340
320
Max Recommended
Environmental
Temperature
300
280
Max. Allowed Current Load [A]
260
500A
240
220
200
180
160
140
120
100
80
60
40
20
0
-40
-3 0
-20
-10
0
10
20
30
40
50
60
70
80
90
100
110
120
13 0
140
150
160
170
180
Ambient Temperature [°C]
REV07272021
Littelfuse ® products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining or nuclear facility applications, devices intended for
surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal injury, death, or property damage) other than those expressly set forth in applicable Littelfuse ®
product documentation. Warranties granted by Littelfuse ® shall be deemed void for products used for any purpose not expressly set forth in applicable Littelfuse ® documentation. Littelfuse ® shall not be liable for any claims or
damages arising out of products used in applications not expressly intended by Littelfuse ® as set forth in applicable Littelfuse ® documentation. The sale and use of Littelfuse ® products is subject to Littelfuse Terms and Conditions of
Sale, unless otherwise agreed by Littelfuse ®.
46
littelfuse.com
