MIL-SPEC · Electronic Components
FM01A125V4A
Fuse, Cartridge
Part NumberFM01A125V4A
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5920-00-777-6490 (NSN)
Federal Item NameFUSE,CARTRIDGE
Federal Supply Class5920 — Fuses and Lightning Arresters
Test Data Document81349-MIL-F-23419 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DA
Continuous Current Rating In Amps4.000
Terminal Diameter0.039 INCHES MINIMUM AND 0.043 INCHES MAXIMUM
Interruption Indicator MethodOPAQUE BODY
Overall Length0.420 INCHES NOMINAL
Center To Center Distance Between0.142 INCHES MINIMUM AND 0.152 INCHES MAXIMUM
Circuit Over Current InterruptionNORMAL INSTANTANEOUS
Overall Diameter0.270 INCHES NOMINAL
Features ProvidedNONRENEWABLE FUSIBLE ELEMENT
Maximum Voltage Rating In Volts125.0 AC AND 125.0 DC
Terminal Length0.170 INCHES NOMINAL
Cancelled NSN5920-00-885-8363 (cancelled)
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 FM01A125V4A available?
We can source FM01A125V4A 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 FM01A125V4A by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If FM01A125V4A 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 FM01A125V4A?
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 FM01A125V4A?
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.