Cae Usa Inc. · Electronic Components
420439
Circuit Breaker
Part Number420439
ManufacturerCae Usa Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-409-3613 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Circuit Protection TypeOVERCURRENT SINGLE LOCATION
Trip Release CharacteristicTIME DELAY SINGLE LOCATION
Main Contact Tripping Mechanism TyTRIP FREE
Reset MethodMANUAL
Nominal Thread Size0.138 INCHES
Center To Center Distance Between1.940 INCHES NOMINAL
Mounting Facility Type And Quantit2 THREADED HOLE(S)
Distance Between Centerlines Of Mo2.060 INCHES NOMINAL
Boss Height0.130 INCHES NOMINAL
Mounting Surface To Terminal End D2.500 INCHES NOMINAL
Pole Quantity1
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 420439 available?
We can source 420439 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 420439 by Cae Usa Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 420439 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 420439?
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 420439?
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.