Littelfuse BF2 58V User Manual

BF2 FUSE RATED 58V

Bolt-down Fuses

Specifications

Housing: Out of thermoplastic (UL 94-V0, heat-resistant)
Visible melting element
Terminal: Copper alloy, gal. Sn
2 x M8 bolts, Distance 51 mm
Mounting Torque: 12.0 Nm +/- 1Nm
Breaking Capacity: 1000A, 58V DC
Complies with: ISO 8820-5

UL 248 Special Purpose Fuses

Ordering Information

Part Number Package Size

142.5395.xxx2 200

Description

This BF2 fuse is rated at 58V and offers a bolt-on fuse for
high current wiring protection. Current rating 100A - 300A; with
transparent housing for easy detection of blown fuses.

Time-Current Characteristics

Opening Time Min / Max (s)

% of Rating

100A - 250A 300A

75 – / – – / –

100 4 h / – 4 h / –

135 120 s / 1,800 s – / –

200 1 s / 15 s 1 s / 15 s

350 0.300 s / 5 s 0.500 s / 5 s

600 0.100 s / 1 s 0.100 s / 1 s

Ratings

Part Number Current Rating Housing Color Typ. Voltage Drop Cold Resistance I2t

142.5395.6102 100 A 110 mV 0.70 mΩ 46,800 A²s

142.5395.6122 125 A

142.5395.6152 150 A

142.5395.6172 175 A

142.5395.6202 200 A

142.5395.6222 225 A

142.5395.6252 250 A

142.5395.6302¹ 300 A

110 mV 0.52 mΩ 118,100 A²s

110 mV 0.42 mΩ 113,400 A²s

110 mV 0.36 mΩ 154,400 A²s

110 mV 0.34 mΩ 288,000 A²s

110 mV 0.29 mΩ 236,000 A²s

110 mV 0.25 mΩ 292,500 A2s

110 mV 0.21 mΩ 486,000 A²s

Note 1: Short circuit protectors only.

www.littelfuse.com © 2012 Littelfuse • Transportation Products Catalog

BF2 FUSE RATED 58V

Bolt-down Fuses

Dimensions

Dimensions in mm

Pre-Arcing Time-Limits

FI = 1.25 (max. operating current: 0.8 x I

at 23°C)

rat

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