FUSEHOLDER SELECTION Fuseholder Selection Guide DO W Lit N te LO lfu A se D .co C m AT /c A at LO alo G gs S A guide to selecting Littelfuse Fuseholder components for electronic applications. FUSEHOLDER SELECTION GUIDE www.littelfuse.com/fuseholders Wire Connector Terminals Fuse Holder Type In- Line Fuse Holders Panel Mount Fuse Enclosure 150274 4.5x14.5 mm (2AG) TH= Thru-Hole Solder SM= Surface Mount Solder ST= Screw Terminal CT= Wire Connector Terminal RS= Rivet/Screw Hole Circuit Board Mount Fuse Enclosure Fuse Blocks Fuse Clips Fuse Series Wire Fuse Type Circuit Connection Method 225 229 245001 Solder QC TH 254101 TH 111501 245002 NEMA QC TH 254121 SM 111505 286377 Flip Top CT Other 254 Series TH 111506 04450001 / 00300210 345 Series Int. Shock-Safe (old) 3452 Series Int. Shock-Safe 5x20 mm 6.3x32 mm (3AB/3AG) 213 215 216 217 218 219XA 232 233 234 235 239 312 313 314 322 326 150274 3455 Int. Shock-Safe TH 345121 Shocksafe TH 520 101 TH 345121 Int. Shock-Safe TH 646 / 649 / 656 Series CT 520 003 - 005 TH 05200001 286677 Flip Top TH 810 / 811 / 814 Series CT 647 Series TH 51800001009 800 / 801 / 802 / 821 Series TH 830 / 831 / 834 Series SM 658 Series TH 51900001009 820/820 - 20 Series Mini Shocksafe TH 852 / 853 / 862 Series TH 52000001009 823 Series Snap-in TH OPTF Series TH 52100001009 824/824-20 / 850 / 851 / 860 series TH 100 / 111 Series 870 Series Medical Grade TH 523 / 445 Series 150322 342006 Watertight TH 345101 Shocksafe CT 354 Series RS 101001 / 101002 150 Series 342021 (FHN26W) Water Tight TH 354101-GY ST 356 Series RS 101003 / 102064 155 Series 342024 (FHN26G2) Drip Proof TH 810 Series ST 359 Series TH 102071 / 102074 LHFB Series 342025 (FHN20G) Drip Proof TH 811 Series TH 102076 / 102078 346877 Flip Top TH 814 Series TH 102079 / 102080 340 Series RF Shielded / Watertight TH 862 Series RS 121001 / 121002 342 Series Traditional RS 121004 344 Series Snap / Panel Mount TH 100058 / 122083 345 Series Int. Shocksafe (old) TH 122087 / 122088 3453 Series Int. Shocksafe TH 122090 / 122093 348 Series Snap Mount TH 10207101009 800 Series Shocksafe TH 51800001009 801 / 802 / 803-01 Series 860 Series 570 Series TE5 / TR5® ® Micro™/ TR3® TH 571 0000 000 TH 559 / 560 / 562 Series SM 564 Series TH 576 Series 282001 Front mt. Neoprene TH 281005 Vertical Silver 282007 Front mt. Conductive TH 281007 Horizontal Silver 282002 Rear mt. Neoprene TH 281008 Vertical Tin 282008 Rear mt. Conductive TH 281010 Horizontal Tin 369 / 370 372 / 373 374 / 382 383 / 385 391 / 392 395 / 396 397 / 398 399 / 400 808 262 / 268 269 / 272 273 / 274 278 / 279 280004 32V indicating 4.5mm x 14.5mm (2AG) Size Fuse Series and Holder Options Interrupting Rating at Max Voltage Rating * (Amps) 0.1 - 10 250 / 125 35 - 500 • • • • • • • 0.25 - 7 250 / 125 35 - 400 • • • • • • • CQC CCC K PSE Semko Asia BSI VDE CE Europe QPL CSA UR Americas TUV Operating Temperature Range UL Very Fast Acting • • Max. Voltage Rating * (Volts) Lead Free 230 Agency Approvals * Device Range * (Operating Current Options in Amps) RoHS Compliant 225 Fast Acting Medium Acting Fuse Series Name Time Lag (Slo-Blo®) Fuse Options Holder Options Circuit Connection Method Wire Wire Connector Terminals Fuse Holder Type In- Line Fuse Holders Panel Mount Fuse Enclosure 150274 245001 Solder QC TH 245002 NEMA QC 286377 Flip Top TH= Thru-Hole Solder SM= Surface Mount Solder ST= Screw Terminal CT= Wire Connector Terminal RS= Rivet/Screw Hole Circuit Board Mount Fuse Enclosure Fuse Blocks Fuse Clips 254101 TH 111501 TH 254121 SM 111505 CT Other 254 Series TH 111506 345 Series Int. Shock-Safe (old) 3452 Series Int. Shock-Safe 5mm x 20mm Size Fuse Series and Holder Options 215 Agency Approvals * 250 35 - 63 • • • • • • • • • • 0.125 - 25 250 300 - 1500 • • • • • • • • • • • CQC CCC K PSE Semko Asia BSI VDE CE Europe QPL CSA UR Americas TUV Operating Temperature Range UL Very Fast Acting 0.2 - 6.3 • Fast Acting • Medium Acting Max. Voltage Rating * (Volts) Lead Free 213 Interrupting Rating at Max Voltage Rating * (Amps) Device Range * (Operating Current Options in Amps) RoHS Compliant Fuse Series Name Time Lag (Slo-Blo®) Fuse Options 216 • 0.05 - 16 250 750 - 1500 • • • • • • • • • • • 217 • 0.032 - 15 250 35 - 150 • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • • 218 • 0.032 - 16 250 35 - 100 219XA • 0.4 - 6.3 250 150 -55°C to +125°C 232 • 1 - 10 250 / 125 300 / 10,000 233 • 1 - 10 125 10,000 • 234 • 1 - 10 250 100 - 200 0.1 - 7 250 / 125 0.08 - 7 250 / 125 235 239 • • • • • • • • • • • • • • • • • • • • • 35 - 10,000 • • • • • • • 35 - 10,000 • • • • • • • Holder Options Circuit Connection Method Wire Wire Connector Terminals Fuse Holder Type In- Line Fuse Holders Panel Mount Fuse Enclosure 150274 TH= Thru-Hole Solder SM= Surface Mount Solder ST= Screw Terminal CT= Wire Connector Terminal RS= Rivet/Screw Hole Circuit Board Mount Fuse Enclosure Fuse Blocks Fuse Clips 3455 Int. Shock-Safe TH 345121 Shocksafe TH 520 101 TH 04450001 / 00300210 345121 Int. Shock-Safe TH 646 / 649 / 656 Series CT 520 003 - 005 TH 05200001 286677 Flip Top TH 810 / 811 / 814 Series CT 647 Series TH 51800001009 800 / 801 / 802 / 821 Series TH 830 / 831 / 834 Series SM 658 Series TH 51900001009 820/820 - 20 Series Mini Shocksafe TH 852 / 853 / 862 Series TH 52000001009 OPTF Series TH 52100001009 824/824-20 / 850 / 851 / 860 series 823 Series Snap-in TH TH 100 / 111 Series 870 Series Medical Grade TH 523 / 445 Series 6.3mm X 32mm (3AB / 3AG) Size Fuse Series and Holder Options 314 • 322 326 • • 0.01 - 35 250 / 125 / 32 35 - 300 • • • • • • • • 0.01 - 30 250 / 125 / 32 35 - 300 • • • • • • • • 0.125 - 40 250 35 - 1000 • • • • • • • • 1 - 30 250 / 65 100 - 1000 • • • • • 0.01 - 30 250 / 125 100 - 600 • • • • • • • • -55°C to +125°C CQC CCC K PSE Asia Semko BSI TUV CE Europe QPL Americas VDE Operating Temperature Range CSA Max. Voltage Rating * (Volts) UR Device Range * (Operating Current Options in Amps) UL Very Fast Acting Fast Acting • • Lead Free 313 Agency Approvals * Interrupting Rating at Max Voltage Rating * (Amps) RoHS Compliant 312 Medium Acting Fuse Series Name Time Lag (Slo-Blo®) Fuse Options Holder Options Circuit Connection Method Wire Wire Connector Terminals Fuse Holder Type In- Line Fuse Holders Panel Mount Fuse Enclosure 150322 342006 Watertight TH 345101 Shocksafe CT 354 Series RS 101001 / 101002 150 Series 342021 (FHN26W) Water Tight TH 354101-GY ST 356 Series RS 101003 / 102064 155 Series 342024 (FHN26G2) Drip Proof TH 810 Series ST 359 Series TH 102071 / 102074 LHFB Series 342025 (FHN20G) Drip Proof TH 811 Series TH 102076 / 102078 346877 Flip Top TH 814 Series TH 102079 / 102080 340 Series RF Shielded / Watertight TH 862 Series RS 121001 / 121002 TH= Thru-Hole Solder SM= Surface Mount Solder ST= Screw Terminal CT= Wire Connector Terminal RS= Rivet/Screw Hole Circuit Board Mount Fuse Enclosure Fuse Blocks Fuse Clips 342 Series Traditional RS 121004 344 Series Snap / Panel Mount TH 100058 / 122083 345 Series Int. Shocksafe (old) TH 122087 / 122088 3453 Series Int. Shocksafe TH 122090 / 122093 348 Series Snap Mount TH 10207101009 800 Series Shocksafe TH 51800001009 801 / 802 / 803-01 Series 860 Series Fuseholder Re-Rating For 25°C ambient temperatures, it is recommended that fuseholders be operated at no more than 60% of the nominal current rating established using the controlled test conditions specified by Underwriters Laboratories. The primary objective of these UL test conditions is to specify common test standards necessary for the continued control of manufactured items intended for protection against fire, etc. A copper dummy fuse is inserted in the fuseholder by Underwriters Laboratories, and then the current is increased until a certain temperature rise occurs. The majority of the heat is produced by the contact resistance of the fuseholder clips. This value of current is considered to be the rated current of the fuseholder, expressed as 100% of rating. Some of the more common, everyday applications may differ from these UL test conditions as follows: fully enclosed fuseholders, high contact resistance, air movement, transient spikes, and changes in connecting cable size (diameter and length). Even small variations from the controlled test conditions can greatly affect the ratings of the fuseholder. For this reason, it is recommended that fuseholders be de-rated by 40% (operated at no more than 60% of the nominal current rating established using the Underwriter Laboratories test conditions). * In some cases for these categories the ratings, agency approvals and specifications vary by part number and are presented here as ranges representing the whole series. TE5®/TR5® Type Fuse Series and Holder Options Interrupting Rating at Max Voltage Rating * (Amps) 0.4 - 6.3 250 35 - 50 • • • • 0.4 - 6.3 250 35 - 50 • • • • • • • 0.5 - 10 250 50 • • 373 • -40°C to +85°C CQC CCC K PSE Asia Semko BSI VDE CE Europe QPL CSA UR Americas TUV Operating Temperature Range UL Very Fast Acting Max. Voltage Rating * (Volts) • Lead Free 372 Agency Approvals * Device Range * (Operating Current Options in Amps) RoHS Compliant 370 Fast Acting Medium Acting Fuse Series Name Time Lag (Slo-Blo®) Fuse Options • • • • • • • • • • • • • • • • • • • • 374 • 0.5 - 10 250 50 382 • 1 - 10 250 100 • • 383 • 1 - 10 300 50 - 100 • • 369 • 1 - 6.3 300 50 • 385 • 0.35 - 1.5 125 50 • • • 0.125 - 4 65 50 • • • 0.8 - 6.3 250 25 - 63 • • • 0.05 - 6.3 125 100 391 392 • • 395 • • • • • • • • • • • • • 396 • 0.05 - 6.3 125 100 397 • 0.35 - 1.5 125 50 0.125 - 4 65 50 • • • • • • • • • Lead Free -40°C to +85°C • RoHS Compliant • • • • • • 398 • • 399 • 0.125 - 4 65 50 • 400 • 0.5 - 6.3 250 130 • 1-5 250 100 • 808 • • • Holder Options Circuit Connection Method Wire Connector Terminals Fuse Holder Type Panel Mount Fuse Enclosure TH= Thru-Hole Solder SM= Surface Mount Solder ST= Screw Terminal CT= Wire Connector Terminal RS= Rivet/Screw Hole Circuit Board Mount Fuse Enclosure 570 Series TH 571 0000 000 TH 559 / 560 / 562 Series SM 564 Series TH 576 Series Micro™/TR3® Type Fuse Series and Holder Options Agency Approvals * -55°C to +125°C • • • 10,000 -55°C to +125°C • • • 273 / 274 / 279 • 0.002 - 5 125 10,000 -55°C to +85°C PSE Semko BSI QPL CSA UR UL Holder Options Circuit Connection Method Wire Connector Terminals Fuse Holder Type Panel Mount Fuse Enclosure TH= Thru-Hole Solder SM= Surface Mount Solder ST= Screw Terminal CT= Wire Connector Terminal RS= Rivet/Screw Hole Circuit Board Mount Fuse Enclosure 282001 Front mt. Neoprene TH 281005 Vertical Silver 282007 Front mt. Conductive TH 281007 Horizontal Silver 282002 Rear mt. Neoprene TH 281008 Vertical Tin 282008 Rear mt. Conductive TH 281010 Horizontal Tin 280004 32V indicating CQC 10,000 125 Asia CCC 125 0.002 - 5 Europe K 0.002 - 5 • Fast Acting • 272 / 278 Medium Acting 262 / 268 / 269 Americas TUV Operating Temperature Range VDE Interrupting Rating at Max Voltage Rating * (Amps) Device Range * (Operating Current Options in Amps) Fuse Series Name CE Max. Voltage Rating * (Volts) Very Fast Acting Time Lag (Slo-Blo®) Fuse Options As the world's #1 brand in circuit protection, Littelfuse offers the broadest and deepest portfolio of circuit protection products and a global network of technical support backed by more than 80 years of application design expertise. Visit our design support center to access: > Reference Designs > Application Notes > Application Testing > SPICE Models > Local Technical Support > Product Samples > Technical Articles > Certification Documents > Data Sheets WWW.LITTELFUSE.COM/DESIGNSUPPORT Littelfuse offers technologies that protect electronic and electrical circuits and their users against electrostatic discharge (ESD), load switching surges, lightning strike effects, overloads, short circuits, power faults, ground faults and other threats. Overcurrent Protection Products: Fuses Littelfuse offers the world’s broadest range of fuse types and ratings, including cartridge, leaded, surface mount and thin film designs PTCs Positive Temperature Coefficient thermistor technology provides resettable current-limiting protection Protection Relays Electronic and microprocessor-based protection relays minimize damage to equipment and personnel caused by electrical faults Overvoltage Protection Products: Varistors Littelfuse offers surface mount Multi-Layer Varistors (MLVs) and industrial Metal Oxide Varistors (MOVs) to protect against transients GDTs Gas Discharge Tubes (GDTs) to dissipate transient voltage through a contained plasma gas Thyristors Solid state switches that control the flow of current in a wide range of appliances, tools and equipment SIDACtor Devices Overvoltage protection specifically designed for legacy telecom ® and today’s broadband connections TVS Diodes Silicon Transient Voltage Suppression (TVS) devices SPAs Silicon Protection Arrays designed for analog and digital signal line protection PulseGuard® ESD Suppressors Small, fast-acting Electrostatic Discharge (ESD) suppressors Special Application Products: PLED LED Protectors LED string reliability devices that offer open LED bypass, ESD protection and reverse connection protection Download catalogs at www.littelfuse.com/catalogs or contact your authorized Littelfuse product representative for more information. ©2010 Littelfuse, Inc. Printed in USA Specifications descriptions and illustrative material in this literature are as accurate as known at the time of publication, but are subject to changes without notice. Visit www.littelfuse.com for the most up-to-date technical information. FORM NO. EC118 Revision Code: EC1118v1E1007