Boeing · Electronic Components
74B059539-203
Circuit Breaker
Part Number74B059539-203
ManufacturerBoeing
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-431-7056 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Nominal Thread Size0.138 INCHES
Criticality Code JustificationFEAT
Trip Release CharacteristicINSTANTANEOUS SINGLE LOCATION
Center To Center Distance Between1.530 INCHES NOMINAL
Pole Quantity1
Mounting Facility Type And Quantit9 THREADED STUD(S)
Mounting Surface To Terminal End D2.232 INCHES MAXIMUM
Main Contact Tripping Mechanism TyNONTRIP FREE
Trip Release MethodSOLID STATE SINGLE LOCATION
Circuit Protection TypeERROR VOLTAGE SINGLE LOCATION
Ultimate Trip Rating Of Continuous41.0 SINGLE LOCATION
Vendor Part NumbersAPGN626-27846-1
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 74B059539-203 available?
We can source 74B059539-203 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 74B059539-203 by Boeing obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 74B059539-203 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 74B059539-203?
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 74B059539-203?
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.