Littelfuse FK1 User Manual
Blade Fuses
FK1 MINI® ST YLE BL ADE FUSE RATED 32V
Specifications
Insulating Body: Out of thermoplastic (UL 94-V0, heat-resistant)
Interrupting Rating: 1000 A @32 VDC
Cover: Out of thermoplastic (V0, transparent)
Visible melting-element
Shunt: Red, not transparent
Terminals: Blade contacts
Copper alloy, gal. Sn plated
Edge-protected
Complies with: ISO 8820-3:2002(E)
UL 248 Special Purpose Fuses
cULus Recognized: File No. E10480
Ordering Information
Part Number Package Size
168.6785.xxx2 8000
168.6785.xxx7 50
Description
The FK1 32V automotive standard fuse link in a MINI® package.
Three part construction with copper contacts for excellent
reliability in harsh environment conditions with low voltage drop.
Current ratings 1A thru 30A. See-through cover for easy detection
of blown fuses.
Time-Current Characteristics
% of Rating Opening Time Min / Max (s)
110 360,000 s / –
135 0.75 s / 1,800 s
200 0.15 s / 5 s
350 0.040 s / 0.500 s
600 0.020 s / 0.100 s
Ratings
Part Number Current Rating Housing Color Typ. Voltage Drop Cold Resistance I2t
168.6785.410_ 1 A 135 mV 100 mΩ 0.83 A²s
168.6785.420_ 2 A
168.6785.430_ 3 A
168.6785.440_ 4 A
168.6785.450_ 5 A
168.6785.475_ 7.5 A
168.6785.510_ 10 A
168.6785.515_ 15 A
168.6785.520_ 20 A*
168.6785.525_ 25 A*
168.6785.530_ 30 A*
160.6785.000_ Shunt*
110 mV 43.0 mΩ 3.31 A²s
110 mV 27.0 mΩ 7.45 A²s
110 mV 21.3 mΩ 16.7 A²s
105 mV 16.2 mΩ 19.8 A²s
100 mV 9.70 mΩ 44.5 A²s
110 mV 7.40 mΩ 79.2 A²s
105 mV 4.50 mΩ 178 A²s
100 mV 3.10 mΩ 331 A²s
120 mV 2.60 mΩ 653 A²s
105 mV 1.95 mΩ 1,264 A²s
60 mV 1.35 mΩ 1,800 A²s
* Not mentioned in the standards
Corresponding holder see Section “Fuse Holders.”
© 2012 Littelfuse • Transportation Products Catalogwww.littelfuse.com
Blade Fuses
FK1 MINI® ST YLE BLADE FUSE RATED 32V
Dimensions
Dimensions in mm
Pre-Arcing Time-Limits
FI = 1.33 (max. operating current: 0.75 x I
at 23°C)
rat
www.littelfuse.com © 2012 Littelfuse • Transportation Products Catalog
Loading...