Special Application Fuses 481 Series Alarm Indicating Fuse 481 Series Alarm Indicating Fuse RoHS 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 Agency Features • Color-coded indicator flags indicate ampere rating. Agency File Number E71611 0.080A - 20A 29862 0.080A - 20A • Clear plastic lens option available for additional safety. Electrical Characteristics • RoHS compliant % of Ampere Rating Opening Time 100% 10 Minutes, Minimum 150% 5 Minutes, Maximum • Body is constructed of black plolyphenylene sulfide with UL-94V0 flammability rating. • Contacts made of bright alloy-plated beryillioum copper. Applications Ideal for telecommunications and control panel circuits Electrical Characteristics Ampere Rating (A) Amp Code 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 15.0 20.0** .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. Max Voltage Rating (V) 40A @ 175 VDC 450A @ 60 VDC 125 VAC & 125 VDC Body Color Code Nominal Cold Resistance (Ohms) Nominal Melting I2t (A2 Sec.) Yellow Red/Black Violet Gray/White Red Black Brown Gray White Yellow/White Orange Orange/White Blue Blue/White Brown/White Green White/Black White/Red Yellow/Green Blue/Red White/Green 6.25 5.70 4.20 2.00 1.52 1.25 .980 .665 .480 .385 .120 0.093 .0670 .0415 .0350 .0285 .0113 .00840 .00660 .00580 .00394 0.0400 0.0576 0.0625 0.230 0.490 0.723 1.32 1.82 3.13 2.55 10.2 16.0 25.0 10.5 36.0 64.0 121.0 380.3 571.2 900.0 1024.0 Interrupting Rating 300A @ 125 VAC (up to 20A) 300A @ 125 VDC (up to 15A) 200A @ 125 VDC (up to 20A) 460A @ 60 VDC (up to 15A) * 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. Agency Approvals 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 Additional Information 20A Fuseholder is designed to accept all ratings up to 20 amperes. Datasheet Resources Samples © 2015 Littelfuse, Inc. Specifications are subject tostrongly change recommended. without notice. Specifications are subject to change without notice. Application testing is Revised: 09/17/15 Special Application Fuses 481 Series Alarm Indicating Fuse Product Characteristics Body: Polyphenylene Sulfide (UL 94VO) Terminations: Beryllium Copper/Tin Plated Material Optional Lens: Nylon MIL-STD-202 Method 201 Vibration Dimensions Operating Temperature – 55OC to 125OC. Thermal Shock Withstands 5 cycles of – 55OC to 125OC Insulation Resistance (After Opening) Greater than 10,000 ohms. 22.9mm (.90") MIN. 17.8mm (.70") 21.3mm (0.84") REF. LENS 11.7mm (.46") 16.9mm (.665") MAX. 100 2.77 (.109") 5.8mm (.23") 4.45 (.175") 2.79 (.110") 5.3mm (.21") 1-15A 20A* TIME IN SECONDS 19.6mm (.77") 1000 18/100 A 1/4 A 1/2 A 65/100 A 3/4 A 1A 1 1/3 A 2A 3A 4A 5A 7 1/2 A 10 A 12 A 15 A 20 A Average Time Current Curves 10 1 *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. Part Numbering System 0.1 0.01 0.1 1 10 100 CURRENT IN AMPERES 0481 .180 H XL P RoHS ITEM OPTION CODE: Blank = Standard design item P = RoHS compliant version item (available in 2-20 amp range only) OPTION CODE: Blank = Standard XL = Protective Lens QUANTITY CODE: V = 5 pack H = 100 pack M = 1000 Pack AMP CODE (See Electrical Characteristics Table) SERIES © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 09/17/15 1481001 1000