Mersen USA Ep · Electronic Components
HSJ400
Fuse, Cartridge
Part NumberHSJ400
ManufacturerMersen USA Ep
AvailabilityAvailable to order — request a quote
Specifications
NSN5920-01-651-2987 (NSN)
Federal Item NameFUSE,CARTRIDGE
Federal Supply Class5920 — Fuses and Lightning Arresters
Overall Length8.0 INCHES NOMINAL
Continuous Current Rating In Amps400.0
Mounting Hole Diameter0.6875 INCHES NOMINAL
Overall Diameter2.5 INCHES NOMINAL
Center To Center Distance Between6.0 INCHES NOMINAL
Body StyleHOLE TYPE
Circuit Over Current Interruption3.0 130 PCT OF CURRENT RATING
Terminal Thickness0.375 INCHES NOMINAL
Features ProvidedNONRENEWABLE FUSIBLE ELEMENT
Maximum Voltage Rating In Volts500.0 DC AND 600.0 AC
Interruption Indicator MethodNO VISUAL INDICATION
ESD/EMICode A — ESD/EMI sensitive item
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 HSJ400 available?
We can source HSJ400 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 HSJ400 by Mersen USA Ep obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If HSJ400 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 HSJ400?
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 HSJ400?
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.