Mersen USA Ep · Electronic Components
A50P40-4
Fuse, Cartridge
Part NumberA50P40-4
ManufacturerMersen USA Ep
AvailabilityAvailable to order — request a quote
Specifications
NSN5920-01-085-8373 (NSN)
Federal Item NameFUSE,CARTRIDGE
Federal Supply Class5920 — Fuses and Lightning Arresters
Surface TreatmentSILVER TERMINAL
Overall Length3.188 INCHES NOMINAL
Mounting Hole Diameter0.344 INCHES NOMINAL
Precious MaterialSILVER
Overall Diameter0.812 INCHES NOMINAL
Continuous Current Rating In Amps40.000
Center To Center Distance Between2.438 INCHES NOMINAL
Interruption Indicator MethodOPAQUE BODY
Terminal Thickness0.125 INCHES NOMINAL
Maximum Voltage Rating In Volts500.0 AC AND 500.0 DC
Circuit Over Current InterruptionNORMAL INSTANTANEOUS
Vendor Part NumbersA50P40
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 A50P40-4 available?
We can source A50P40-4 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 A50P40-4 by Mersen USA Ep obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If A50P40-4 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 A50P40-4?
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 A50P40-4?
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.