Mersen USA Ep · Electronic Components
OT250
Fuse, Cartridge
Part NumberOT250
ManufacturerMersen USA Ep
AvailabilityAvailable to order — request a quote
Specifications
NSN5920-00-553-6448 (NSN)
Federal Item NameFUSE,CARTRIDGE
Federal Supply Class5920 — Fuses and Lightning Arresters
Body StyleKNIFE BLADE TYPE
Maximum Voltage Rating In Volts250.0 DC
Nondefinitive Spec Std Data1 TYPE AND A STYLE
Features ProvidedNONRENEWABLE FUSIBLE ELEMENT
Continuous Current Rating In Amps250.000
Terminal Thickness0.250 INCHES NOMINAL
Interruption Indicator MethodOPAQUE BODY
Circuit Over Current InterruptionNORMAL INSTANTANEOUS
MaterialFIBER CASE
Terminal Length1.875 INCHES NOMINAL
Overall Diameter2.406 INCHES MAXIMUM
Vendor Part NumbersNON-250
Cancelled NSN5920-00-538-4137 (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 OT250 available?
We can source OT250 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 OT250 by Mersen USA Ep obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If OT250 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 OT250?
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 OT250?
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.