Littelfuse TF Series - Manual

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TF ATO ® STYLE BLADE FUSE RATED 90V
Dimensions
Dimensions in mm
Description
The TF is an ATO ® style blade fuse rated at 90V, featuring a three
part construction with copper contacts for excellent reliability in
harsh environment conditions and low voltage drop. With see-
through cover for easy detection of blown fuses. The fuses were
defined over the I²t value, not via t/c curve requirements.
Specifications
Insulating Body: Out of thermoplastic (UL 94-V0, heat-resistant)
Cover: Out of thermoplastic (UL 94-V0, heat-resistant)
Visible melting element
Terminals: Blade contacts
Copper alloy, gal. Sn
Edge-protected
Test cable: 4 mm²
Ordering Information
Part Number Package Size
162.7049.xxx2 2000
Remark: TF-fuse links are back-up fuse links, see minimum fault current.
Corresponding holder see Section “Fuse Holders.”
Time-Current Characteristics
% of Rating Opening Time Min / Max (s)
110 14,400 s / –
200
(4A & 8A only)
– / 300 s
300 – / 10 s
500 0.20 s / –
Pre-arcing Time-limits
Ratings
Part Number Current Rating Housing Color Typ. Voltage Drop Cold Resistance I 2 t
162.7049.4402 4 A 115 mV 19.4 Ω > 100 A²s
162.7049.4802 8 A 80 mV 7.50 Ω > 300 A²s
162.7049.5102 10 A 70 mV 6.10 Ω > 580 A²s
162.7049.5152 15 A 65 mV 3.50 Ω > 1,700 A²s
Blade Fuses