Brochure

© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
Axial Lead & Cartridge Fuses
5×20 mm > Slo-Blo
®
Fuse > 239 Series
Amp Code
Amp Rating
(A)
Voltage
Rating
(V)
Interrupting
Rating
Nominal Cold
Resistance
(Ohms)
Nominal
Melting
I
2
t (A
2
sec)
Agency Approvals
PS
E
.080 0.08 250
35A @ 250 VAC
10kA @ 125 VAC
28.1750 0.02500 x x
.10 0 0.1 250 17.3425 0.05500 x x
.125 0.125 250 11.6000 0.08500 x x
.150 0.15 250 8.1000 0.13000 x x
.200 0.2 250 3.8725 0.16500 x x x x
.250 0.25 250 3.0700 0.34000 x x x x
.300 0.3 250 2.3000 0.61500 x x x x
.400 0.4 250 1.4750 2.02000 x x x x
.500 0.5 250 0.9090 1.98500 x x x x
.600 0.6 250 0.6990 2.41500 x x x x
.700 0.7 250 0.5375 4.12000 x x x x
.750 0.75 250 0.4710 5.42500 x x x x
.800 0.8 250 0.4155 7.56500 x x x x
0 01. 1 250 0.2965 11.29500 x x x x x
1.25 1.25 250
10kA @ 125 VAC
100A @ 250 VAC
0.1980 19.52500 x x x x x
01. 6 1. 6 250 0.1205 30.43000 x x x x x
002. 2 250 0.0943 50.58500 x x x x x
02.5 2.5 250 0.0583 79.70500 x x x x x
003. 3 250 0.04877 129.51000 x x x x x
3.15 3.15 250 0.0414 128.05000 x x x x x
03.2 3.2 250 0.0385 128.05000 x x x
03.5 3.5 250 0.0370 128.05000 x x x
004. 4 125
10kA @ 125 VAC
0.0312 270.703 x x x x x
005. 5 125 0.0199 302.836 x x x x x
007. 7 125 0.0114 305.758 x x x x x
Electrical Characteristic Specification by Item
Average Time Current CurvesTemperature Re-rating Curve
CURRENT IN AMPERES
10000
0.200A 0.250A 0.300A 0.400A 0.500A 0.600A 0.700A 0.750A 0.800A 1A 1.25A 1.6A 2A 2.5A 3A 3.15A 4A 5A 7A
1000
100
10
1
0.1
0.01
0.1 110100 1000
0.001
TIME IN SECONDS
Note:
Rerating depicted in this curve is in addition to the standard derating of 25% for
continuous operation.