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© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
Special Application Fuses
481 Series Alarm Indicating Fuse
Average Time Current Curves
1000
100
10
1
0.1
0.01
10001001010.1
18/100 A 1/4 A 1/2 A 65/100 A 3/4 A 1 A 1 1/3 A 2 A 3 A 4 A 5 A 7 1/2 A 10 A 12 A 15 A 20 A
TIME IN SECONDS
CURRENT IN AMPERES
1481001
Material
Body: Polyphenylene Sulfide (UL 94VO)
Terminations: Beryllium Copper/Tin Plated
Optional Lens: Nylon
Vibration MIL-STD-202 Method 201
Product CharacteristicsProduct Characteristics
Dimensions
Part Numbering System
*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.
22.9mm
(.90") MIN.
5.8
mm
(.23")
5.3
mm
(.21")
16.9
mm
(.665") MAX.
11.7
mm
(.46")
17.8
mm
(.70")
19.6
mm
(.77")
21.3mm
(0.84")
REF.
LENS
2.77
(.109")
2.79
(.110")
4.45
(.175")
1-15A 20A*
Operating Temperature – 55
O
C to 125
O
C.
Thermal Shock
Withstands 5 cycles of – 55
O
C to
125
O
C
Insulation Resistance
(After Opening)
Greater than 10,000 ohms.
ACCESSORY:
RoHS ITEM OPTION CODE:
FUSE SERIES
AMP COLOR CODE:
QUANTITY CODE:
Blank = Standard design item
X = Filler
XL = Protective Lens
Blank = Standard design item
P = RoHS compliant version item
(available in 2-20 Amp Range only)
0481 .180 H XL M P
V = 5 pack
H = 100 pack
(See Electrical Characteristics Table)
AMPERAGE STAMPING MARK:
Blank = Standard design item
M = Front Side
Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and
test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications.
Read complete Disclaimer Notice at www.littelfuse.com/disclaimer-electronics.