03450601H
Cartridge Fuse Holder, 1 Fuse, 20A, 250V, 6.3mm x 32mm, Quick Connect
- Manufacturer: LITTELFUSE
- Product type: Fuse Holders
- SVHC: No SVHC (27-Jun-2024)
- Fuse Current: 20A
- No. of Fuses: 1Fuses
- Product Range: 345 Series
- Fuse Size Held: 1/4" x 1.1/4", 6.3mm x 32mm
- Fuse Holder Type: Cartridge Fuse Holder
- Holder Terminals: Quick Connect
- Voltage Rating VAC: 250V
- Voltage Rating VDC: 250V
| Delivery and price | |
|---|---|
| Units per pack | 100 |
| Price | 2.65 € |
| Current stock | 50+ |
| Lead time | 30 days |
**Cartridge Fuse Holders** Enclosed Fuseholders > Circuit Board Mounted ## 345 Series Shock Safe Circuit Bo ~~ard Mount Enclosed Fuse Holders~~ ## **RoHS Pb** ~~LIOWM@ <>~~ ## ~~**Product Characteristics**~~ ## ~~**Dimensions**~~ |**Compatible Fuse**<br>**Types**<br>**Description**|**3AG**<br>**3AB**<br>**5×20mm**<br>Similar to our Shock-Safe panel mount fuseholders, this<br>series is designed per IEC Standards 60127-6. Two different<br>knob styles available are available for use with 3AG and 3AB<br>(¼” × 1¼”) or 5 × 20mm fuses.| |---|---| ||Insulation Resistance: 10,000 megohm minimum at 500 VDC.| |**Electrical**|Contact Resistance: Less than .005 ohm average at a current| ||of one ampere.| |**Dielectric Strength**|4000 volts minimum.<br>Mounting: Intended for soldering to printed circuit boards.| |**Molded Parts**|Body Material: Black glass-filled thermoplastic (UL 94V0).| ||Screwdriver slot, fuse extractor type with nickel- plated, copper| |**Knob**|alloy insert. Spring-loaded, bayonet style.<br>Knob Material: Grey or Black glass-filled thermoplastic (UL94| ||V-0)| |**Terminals**|Brass. Tin-plated.| **Ambient Temperature** –40ºC to +85ºC. **==> picture [466 x 237] intentionally omitted <==** **----- Start of picture text -----**<br> .49"<br>— 1.77" 1— Agency Approvals<br>4<br>.44" .48" Agency Agency File Number<br>Ti t | j a .20" f=U e .12" 4 E14721<br>.68"<br>.24" .040"<br>7316<br>eet P L J @.<br>Recommended hole Pattern<br>+} .598.602"" .698.702"" .242.246"" 133923<br>.056" * Please refer to Fuseology section for information on proper fuseholder re-rating.<br>DIA.<br>Ordering Information<br>Catalog Number Fuse Size<br>Additional Information 345 101 ¼” × 1¼” Fuses<br>345 121 5 × 20mm Fuses<br>Body only: 345 101-010<br>Knob only: 345 101-020 (¼” × 1¼”) Grey;<br>Si<br>345 121-020 (5 × 20mm) Black.<br>Datasheet Resources Samples<br>**----- End of picture text -----**<br> - Please refer to Fuseology section for information on proper fuseholder re-rating. © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Application testing is strongly recommended. Revised: 05/29/15 **Cartridge Fuse Holders** Enclosed Fuseholders > Panel Mounted ## 345 Series Panel Mount Enclose ~~d Fuse Holders~~ ## ~~**RoHS Pb** LIO WE~~ **==> picture [101 x 8] intentionally omitted <==** **----- Start of picture text -----**<br> Additional Information<br>**----- End of picture text -----**<br> **==> picture [197 x 9] intentionally omitted <==** **----- Start of picture text -----**<br> Datasheet Resources Samples<br>**----- End of picture text -----**<br> |~~**Product Characteristics**~~|~~**Product Characteristics**~~| |---|---| ||| |**Compatible**<br>**Fuses**|**For 3AB/3AG, 5×20mm Fuses**| |**Description**|Designed to eliminate the possibility of electrical<br>shock, as defined in IEC standards 60127-6. The<br>universal fuseholder body will accept 3AB, 3AG, and| ||5 × 20mm fuse sizes.| ||Insulation Resistance: 10,000 megohm minimum at| |**Electrical**|500 VDC. Contact Resistance: Less than .005 ohm<br>average at currents up to 1 ampere. Dielectric Strength:| ||4,000 volts minimum.| |**Mounting**|Threaded styles withstand 15 in.-lb. mounting torque.<br>Low profile and High profile panel thickness: .032”| ||min./.310” max.| |**Molded Parts**|Body Material: Black glass-filled thermoplastic (UL<br>94V0).| |**Knob Material**|Grey or black glass-filled thermoplastic (UL94 V-0) Hex<br>Nut Material: Black glass-filled thermoplastic.| ||Fuse Extractor type with plated copper alloy insert.| |**Knob**|Plated copper alloy contact clips. Spring loaded, locking<br>mechanism provides an anti-tease feature and will not| |**Terminals**|vibrate loose.<br>Plated cooper alloy, A-187; dual purpose terminal<br>accepts wire for soldering or a Quick-Connect<br>receptacle.| |**Ambient**<br>**Temperature**|–40ºC to +85ºC.| * Please refer to Fuseology section for information on proper fuseholder re-rating. |**Agency Approval**|||| |---|---|---|---| |**Agency**|**Agency File**<br>**Number**|**3AG/AB**|**5×20mm**| |~~\~~|E14721|20A, 600V|20A, 600V| |G.|7316|20A, 600V|20A, 600V| © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/02/17 Application testing is strongly recommended. **Cartridge Fuse Holders** Enclosed Fuseholders > Panel Mounted **==> picture [94 x 32] intentionally omitted <==** ## ~~**Dimensions**~~ **==> picture [522 x 620] intentionally omitted <==** **----- Start of picture text -----**<br> Low Profile Screwdriver Slot Knob Terminal Styles<br>.65" DIA. KNOB - GRAY: 0345601, 0345611<br>(16.5) BLACK: 0345621, 0345631 .090" x .160"<br>HOLE<br>.187"<br>1/2-32 (2A)<br>0.37(9.4) (38.1)1.50 DOUBLE-LEADTHREAD 3/16" DUALPURPOSE<br>1.66 SOLDER/QUICKCONNECT<br>(42.2)<br>High Profile Screwdriver Slot Knob Bottom Terminal<br>.65" DIA. KNOB - GRAY: 0345602, 0345612 Suggested Mounting Holes Right Angle Straight<br>(16.5) BLACK: 0345622, 0345632 .475" .460" B<br>.480" .465" C<br>.502" A<br>.510"<br>1/2-32 (2A) A B C<br>DOUBLE-LEAD .62" .37" .020"<br>0.37 1.21 THREAD<br>(9.4) (30.7)<br>1.66 "Push-On" Type Retaining Nut<br>Low Profile Fingergrip Knob (42.2) for Quick Mount Fuseholder Plastic Hex Nut with Flange<br>.65" DIA. .65"<br>(16.5) .19" DIA.<br>.63"<br>1/2-32 (2A)DOUBLE-LEAD .91" DIA. 1/2" THREADSPECIAL .558"HEX.<br>0.37 1.21 THREAD<br>(9.4) (30.7)<br>1.66<br>(42.2)<br>Fast Mount Low Profile Screwdriver Slot Knob<br>KNOB - GRAY: 0345701, 0345711<br> BLACK: 0345721, 0345731<br>.65" DIA. +5|<br>(16.5) -3|<br>8|<br>0.80<br>.020 (20.3)<br>(.51)<br>Rear Mount Fingergrip Knob<br>.65" DIA.<br>(16.5)<br>1/2-32 (2A)<br>DOUBLE-LEAD<br>0.37 1.50 THREAD<br>(9.4) (38.1)<br>1.66<br>(42.2)<br>Part Numbering System<br>Part Number Low High Front Rear Rt. Angle Straight<br>Knob Type Packing<br>(3AG/AB) 5x20mm Profile Profile Mount Mount Terminal Terminal<br>03450601H 03450621H Screwdriver Slot X X X Bulk (100 pieces)<br>03450602H 03450622H Screwdriver Slot X X X Bulk (100 pieces)<br>03450603H 03450623H Finger Grip X X X Bulk (100 pieces)<br>03450611H 03450631H Screwdriver Slot X X X Bulk (100 pieces)<br>03450612H 03450632H Screwdriver Slot X X X Bulk (100 pieces)<br>03450613H 03450633H Finger Grip X X X Bulk (100 pieces)<br>03450701H -- Screwdriver Slot X X X Bulk (100 pieces)<br>03450711H -- Screwdriver Slot X X X Bulk (100 pieces)<br>03450903H 03450923H Finger Grip X X X Bulk (100 pieces)<br>03450913H 03450933H Finger Grip X X X Bulk (100 pieces)<br>**----- End of picture text -----**<br> © 2017 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 06/02/17
Updated at June 10, 2026
Founded in 1927 and headquartered in Chicago, Illinois, Littelfuse is a premier global manufacturer of circuit protection, power control, and sensing technologies. Widely recognized for pioneering the first small, fast-acting protective fuse, the company has grown into an industry leader whose highly reliable components are essential to modern industrial, transportation, and consumer electronics applications worldwide. At the core of the Littelfuse portfolio is an expansive and industry-leading range of circuit protection solutions. This encompasses a massive selection of traditional fuses, fuse holders, and resettable PTC thermistor fuses designed to safely interrupt overcurrent conditions. To defend against electrical overstress, Littelfuse also provides advanced transient voltage suppression (TVS) technologies, including thousands of specialized TVS diodes, TVS varistors, and gas discharge tubes (GDTs) that ensure robust defense against voltage spikes and environmental hazards. Beyond its foundational protection components, Littelfuse manufactures a diverse array of discrete semiconductors, sensors, and switching devices. Engineers rely on their high-performance thyristors, including TRIACs and SCRs, alongside power-efficient Schottky diodes and MOSFETs for demanding power control applications. Complemented by precision proximity sensors and highly reliable reed and solid-state relays, Littelfuse delivers the critical building blocks required for secure, efficient, and complete system design.
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