Cooper Bussmann, LLC · Electronic Components
MDB4
Fuse, Cartridge
Part NumberMDB4
ManufacturerCooper Bussmann, LLC
AvailabilityAvailable to order — request a quote
Specifications
NSN5920-00-284-6790 (NSN)
Federal Item NameFUSE,CARTRIDGE
Federal Supply Class5920 — Fuses and Lightning Arresters
Surface TreatmentSOLDER TERMINAL
Features ProvidedNONRENEWABLE FUSIBLE ELEMENT
Continuous Current Rating In Amps4.000
Maximum Voltage Rating In Volts125.0 AC
Overall Diameter0.281 INCHES NOMINAL
Interruption Indicator MethodVISIBLE ELEMENT
Circuit Over Current Interruption3.0 500 PCT OF CURRENT RATING
Overall Length1.250 INCHES NOMINAL
Body StyleTUBE TYPE
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 MDB4 available?
We can source MDB4 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 MDB4 by Cooper Bussmann, LLC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If MDB4 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 MDB4?
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 MDB4?
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.