Mersen USA Ep · Electronic Components
18478
Fuseholder, Block
Part Number18478
ManufacturerMersen USA Ep
AvailabilityAvailable to order — request a quote
Specifications
NSN5920-01-316-7990 (NSN)
Federal Item NameFUSEHOLDER,BLOCK
Federal Supply Class5920 — Fuses and Lightning Arresters
Internal Circuit Configuration And1 POLE, MAINLINE, FUSED
Screw Thread Diameter0.312 INCHES NOMINAL
Body StyleOPEN TYPE
Overall Height2.500 INCHES NOMINAL
Screw Thread Quantity Per Inch18.0
Fuse Accommodation Quantity1
Center To Center Distance Between2.440 INCHES NOMINAL
Overall Length4.500 INCHES NOMINAL
Base Thickness1.000 INCHES NOMINAL
Accommodated Fuse Length4.500 INCHES NOMINAL
Overall Width1.500 INCHES NOMINAL
Vendor Part NumbersP243G
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 18478 available?
We can source 18478 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 18478 by Mersen USA Ep obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 18478 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 18478?
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 18478?
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.