481 Datasheet, PDF (1/1 Pages) Littelfuse – Blade Terminal & Special Purpose Fuses

Blade Terminal & Special Purpose Fuses
481 Series Alarm Indicating Fuse
®
®
• Ideal for telecommunications and control panel circuits.
• Eliminates down time by immediately pinpointing the blown (open)
circuit while triggering LED or audio alarm, while placed in mating
holder (482 Series).
• Clear plastic lens option available for additional safety.
ELECTRICAL CHARACTERISTICS:
% of Ampere
Rating
100%
Opening Time
10 minutes, Minimum
150%
5 minutes, Maximum
AGENCY APPROVALS: Recognized under the Components Program
of Underwriters Laboratories and the Components Acceptance Program
of CSA.
AGENCY FILE NUMBERS: UL E71611, CSA LR 29862
INTERRUPTING RATINGS:
450 amperes at 60 VDC
300 amperes at 125 VAC (up to 20 amperes)
300 amperes at 125 VDC (up to 15 amperes)
200 amperes at 125 VDC (up to 20 amperes)
ENVIRONMENTAL SPECIFICATION:
Operating Temperature: –55°C to +125°C
PHYSICAL SPECIFICATIONS:
Construction Materials:
Body:
Polyphenylene Sulfide (UL 94V0)
Terminations: Beryllium Copper/Tin Plated
Optional Lens: Nylon
PACKAGING SPECIFICATIONS:
Available in five (5) packs or boxes of one hundred (100). When ordering
a Five (5) Pack, please add the letter ‘V’ after the catalog number. When
ordering a one hundred (100) piece box, add a ‘H’. To order the part with
a Protective Lens, add the letters ‘XL’ after the package code.
ORDERING INFORMATION:
Catalog
Number
0481.180
0481.200
0481.250
0481.375
0481.500
0481.650
0481.750
0481001.
04811.33
048101.5
0481002.
048102.5
0481003.
048103.5
0481004.
0481005.
048107.5
0481010.
0481012.
0481015.
0481020.
0481000.
Ampere
Rating
(A)
18/100
1/5
1/4
3/8
1/2
65/100
3/4
1
1¹/3
1¹/2
2
2¹/2
3
3¹/2
4
5
7¹/2
10
12
15
20*
Dummy
Voltage
Rating
Body
Color
Code
Yellow
Red/Black
Violet
Gray/White
Red
Black
Brown
125 VAC
&
125 VDC
Gray
White
Yellow/White
Orange
Orange/White
Blue
Blue/White
Brown/White
Green
Black/White
Red/White
Green/Yellow
Red/Blue
Green/White
ø
Nominal Cold
Resistance
Ohms
6.25
5.70
4.20
2.00
1.52
1.25
.980
.665
.480
.385
.120
.0904
.0670
.0415
.0350
.0285
.0113
.00840
.00660
.00580
.00394
Minimum
Melting I²t
(A² Sec.)
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
*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.
Reference Dimensions:
22.9mm
(.90") MIN.
17.8mm (.70")
19.6mm
(.77")
11.7mm
(.46")
LENS
21.3mm
(0.84")
REF.
16.9mm
(.665") MAX.
5.8mm
(.23")
5.3mm
(.21")
2.77
(.109")
4.45
(.175")
2.79
(.110")
1-15A
20A*
*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.
Average Time Current Curves
1000
100
10
1
0.1
0.01
0.1
1
10
100
CURRENT IN AMPERES
1000
460
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