Littelfuse · Electronic Components
312020
Fuse, Cartridge
Part Number312020
ManufacturerLittelfuse
AvailabilityAvailable to order — request a quote
Specifications
NSN5920-01-518-8941 (NSN)
Federal Item NameFUSE,CARTRIDGE
Federal Supply Class5920 — Fuses and Lightning Arresters
Overall Diameter0.250 INCHES NOMINAL
Circuit Over Current InterruptionNORMAL INSTANTANEOUS
Overall Length1.250 INCHES NOMINAL
Maximum Voltage Rating In Volts32.0 AC
Body StyleTUBE TYPE
Interruption Indicator MethodVISIBLE ELEMENT
Continuous Current Rating In Amps20.000
Vendor Part NumbersPS304794-03
ESD/EMICode A — ESD/EMI sensitive item
RH Electronics, Inc. — independent stocking distributor since 1982.
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Every shipment inspected on receipt · ISO 9001:2015 · ANSI/ESD S20.20 · ERAI member since 1998 · GIDEP participant
Frequently asked
Is 312020 available?
We can source 312020 even if it isn't in our active stock list. As an independent distributor we reach inventory outside the franchise channel — including hard-to-find and obsolete parts. Send us a quote request.
Is 312020 by Littelfuse obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 312020 has been discontinued, we can often source remaining stock or qualified alternates. Contact us with your quantity and target date.
How does RH Electronics verify parts like 312020?
Every incoming shipment is inspected under our ISO 9001:2015 quality system — documentation, markings, and construction checked against known-good references. For deeper analysis, we direct work through accredited independent labs. We've been an ERAI member since 1998 and a GIDEP participant.
Can you find a cross-reference or alternate for 312020?
Yes. Our team reads part numbers the way they were designed — decoding family, speed, temperature grade, package, and reliability level — to identify acceptable alternates when the exact part isn't available. Submit a quote request and we'll advise.