Littelfuse BF1 58V User Manual
BF1 FUSE RATED 58V
Bolt-down Fuses
Specifications
Housing: Out of thermoplastic (UL 94-V0, heat-resistant)
Visible melting element
Terminals: Copper alloy, gal. Sn
2 x M5 bolts, distance 30 mm
Mounting Torque: 4.5 Nm +/- 1Nm
Interrupting Rating: 1000A @ 58 VDC
Complies with: ISO 8820-5
UL 248 Special Purpose Fuses
Operating temperature: -40 to 125 degrees C
Ordering Information
Part Number Package Size
142.5631.xxx2 500
Time-Current Characteristics
Description
This BF1 fuse is rated at 5 8V and offers a bolt-on fuse for
high current wiring protection. Current rating 30A - 200A;
with transparent housing for easy detection of blown fuses.
% of Rating
75 – / – 360,000 s / –
100 360,000 s / – – / –
110 14,400 s / – – / –
150 90 s / 3,600 s – / –
200 3 s / 100 s 1 s / 15 s
300 0.300 s / 3 s – / –
350 – / – 0.300 s / 5 s
500 0.100 s / 1 s – / –
600 – / – 0.100 s / 1 s
Opening Time Min / Max (s)
30-150A Fuses
Ratings
Part Number Current Rating Housing Color Typ. Voltage Drop Cold Resistance I2t
142.5631.5302
142.5631.5402 40 A
142.5631.5502 50 A
142.5631.5602 60 A
142.5631.5702 70 A
142.5631.5802 80 A
142.5631.6102 100 A
142.5631.6122 125 A
142.5631.6152 150 A
142.5631.6202
Corresponding holder see Section “Fuse Holders.”
Note 1: Not UL rated Note 2: Short Circuit Protector only
1
2
30 A 105 mV 2.70 mΩ 5,100 A²s
90 mV 1.56 mΩ 6,800 A²s
80 mV 1.03 mΩ 6,900 A²s
75 mV 0.75 mΩ 16,200 A²s
70 mV 0.64 mΩ 22,000 A²s
70 mV 0.55 mΩ 25,600 A²s
70 mV 0.44 mΩ 42,500 A2s
70 mV 0.34 mΩ 62,500 A²s
70 mV 0.29 mΩ 83,400 A²s
200 A 70 mV 0.24 mΩ 126,000 A²s
200A Short Circuit
Protectors
www.littelfuse.com © 2012 Littelfuse • Transportation Products Catalog
BF1 FUSE RATED 58V
Bolt-down Fuses
Dimensions
Dimensions in mm
Pre-Arcing Time-Limits
30 A - 150 A: FI = 1.25 (max. operating current: 0.8 x I
200 A: FI = 2.00 (max.operating current: 0.5 x I
at 23°C)
rat
at 23°C)
rat
Derating
Individual derating curves by rating can be ordered through your
Littelfuse contact person.
www.littelfuse.com © 2012 Littelfuse • Transportation Products Catalog
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