Blade Terminal & Special Purpose Fuses
Low Voltage
RoHS
ATO
廬
Fuse
Fast-Acting Type
UL
廬
廬
Designed and originated by Littelfuse for the automotive industry, the
ATO fuse has become the original equipment circuit protection standard
for foreign and domestic automobiles and trucks. Readily identifiable and
easily replaced, this fuse can be specified for a variety of low voltage
electronic applications.
ELECTRICAL CHARACTERISTICS:
% of Ampere
Rating
110%
135%
200%
350%
Ampere
Rating
1鈥?40 Amp
1鈥? Amp
3 鈥?40 Amp
1鈥? Amp
3 鈥?40 Amp
1鈥? Amp
3 鈥?40 Amp
Opening
Time
100 Hours
Minimum
.50 sec.,
Min.;
600 sec.,
Max.
.75 sec.,
Min.;
600 sec.,
Max.
.10 sec.,
Min.;
5 sec.,
Max.
.15 sec.,
Min.;
5 sec.,
Max.
.020 sec.,
Min.;
0.5 sec.,
Max.
.080 sec.,
Min.;
0.5 sec.,
Max.
Reference Dimensions
19.05
(.75")
12.19
(.48")
6.35
(.25")
4.064
(.16")
14.48
(.57")
0.66
(.026")
5.08
(.20")
AGENCY APPROVALS:
Listed by Underwriters Laboratories (1鈥?40
amperes). Certified by CSA (3 鈥?30 amperes).
DESIGN STANDARDS:
U.L. Standard for Automotive Blade Type
Fuses. SAE (Society of Automotive Engineers) J1284.
PATENTED
COLOR-CODING:
Autofuse
廬
fuses are color-coded for easy
amperage identification.
INTERRUPTING RATING:
1000A @ 32VDC
ORDERING INFORMATION:
Catalog
Number
257
001
257
002
257
003
257
004
257
005
257
07.5
257
010
257
015
257
020
257
025
257
030
257
035
257
040
Ampere
Rating
(A)
1
2
3
4
5
7
1
/
2
10
15
20
25
30
35
40
Voltage
Body
Rating
Color
(VDC)
Code
32
Black
32
Grey
32
Violet
32
Pink
32
Tan
32
Brown
32
Red
32
Blue
32
Yellow
32
Natural
32
Green
32
Blue Green
32
Orange
Nominal Cold
Resistance
Ohms
0.123
0.050
0.031
0.023
0.018
0.011
0.0077
0.0048
0.0033
0.0025
0.0019
0.0016
0.0014
Minimum
Melting I
2
t
(A
2
Sec.)
.4
1.4
7.4
14
26
60
115
340
520
1080
1510
2280
3310
Average Time Current Curves
1000
100
TIME IN SECONDS
10
1
0.1
0.01
1
10
100
1000
CURRENT IN AMPERES
Reference pg. 344, ATO
廬
Fuse Clip for P.C. Board mounting.
450
w w w. l i t t e l f u s e . c o m
2A
3A
4A
5A
7.5A
10A
15A
20A
25A
30A
35A
40A
1A
1
