BladeTerminal & Special Purpose Fuses
481 Series Alarm Indicating Fuse
RoHS
481 Series Alarm Indicating Fuse
Description
481 series alarm indicating fuses are designed to reduce
down time by immediately pinpointing the blown (open)
circuit while triggering an LED or audio alarm. This item
requires 482 series mating fuse holder.
All ranges of 481 series fuses are available as our original
design, and the 2-20 amp range is now available as a RoHS
compliant option (use the “P” designator when ordering).
See the part numbering section of this data sheet for related
ordering instructions.
Agency Approvals
Features
tꢀ $PMPSꢁDPEFEꢀJOEJDBUPSꢀ
flags indicate ampere
rating.
tꢀ #PEZꢀJTꢀDPOTUSVDUFEꢀPGꢀ
black plolyphenylene
sulfide with UL-94V0
flammability rating.
Agency
Agency File Number
E71611
tꢀ $MFBSꢀQMBTUJDꢀMFOTꢀPQUJPOꢀ
available for additional
safety.
LR 29862
tꢀ $POUBDUTꢀNBEFꢀPGꢀCSJHIUꢀ
alloy-plated beryillioum
copper.
Electrical Characteristics
% of Ampere
Rating
Applications
OpeningTime
100%
150%
10 Minutes, Minimum
5 Minutes, Maximum
Ideal for telecommunications and control panel circuits
Electrical Characteristics
Agency
Approvals
Max
Ampere
Rating
(A)
Body
Color
Code
Nominal
Cold Resistance
(Ohms)
Amp
Code
Voltage
Interrupting
Rating
Nominal Melting
I2t (A2 Sec.)
Rating
(V)
0.180*
0.200*
0.250*
0.375*
0.500*
0.650*
0.750*
1.00*
1.33*
1.50*
2.00
2.50
3.00
3.50
4.00
5.00
7.50
10.0
12.0
.180
.200
.250
.375
.500
.650
.750
001.
1.33
01.5
002.
02.5
003.
03.5
004.
005.
07.5
010.
012.
015.
020.
Yellow
3FEꢂ#MBDL
Violet
(SBZꢂ8IJUF
Red
Black
Brown
Gray
8IJUF
:FMMPXꢂ8IJUF
Orange
0SBOHFꢂ8IJUF
Blue
#MVFꢂ8IJUF
#SPXOꢂ8IJUF
Green
#MBDLꢂ8IJUF
3FEꢂ8IJUF
(SFFOꢂ:FMMPX
3FEꢂ#MVF
(SFFOꢂ8IJUF
6.25
5.70
4.20
2.00
1.52
1.25
.980
.665
.480
0.00808
0.0140
0.0356
0.028
0.139
0.278
0.363
0.733
1.58
2.55
5.29
9.46
11.2
10.5
15.4
26.2
42.8
115.3
222.5
294.22
570.0
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
450A @ 60 VDC
300A @ 125 VAC
(up to 20A)
.385
.120
125 VAC
&
125 VDC
300A @ 125 VDC
(up to 15A)
.0904
.0670
.0415
.0350
.0285
.0113
.00840
.00660
.00580
.00394
200A @ 125 VDC
(up to 20A)
15.0
20.0**
* 0.180A thru 1.5A items are not available for sale as a RoHS compliant “P” option
**20A Fuseholder must be used. Fuse is keyed to prevent insertion in lower rated holders.
20A Fuseholder is designed to accept all ratings up to 20 amperes.
www.littelfuse.com
27
Revised: January 9, 2008
Alarm Indicating Fuse 481 Series
©2007 Littelfuse
Specifications are subject to change without notice.