Lockheed Martin Librascope · Electronic Components
2638051-129
Circuit Breaker
Part Number2638051-129
ManufacturerLockheed Martin Librascope
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-231-8661 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Maximum Interrupting Capacity Curr300.0 AC SINGLE LOCATION
Maximum Continuous Load Current Ra750.0 MILLIAMPERES AC SINGLE LOCATION
Ultimate Trip Time Per Pole In Sec3.000 MINIMUM AND 60.000 MAXIMUM SINGLE LOCATION
Bushing Length0.280 INCHES MINIMUM AND 0.380 INCHES MAXIMUM
Main Contact Tripping Mechanism TyTRIP FREE
Ultimate Trip Rating Of Continuous115.0 SINGLE LOCATION
Body Length1.562 INCHES MAXIMUM
Trip Release CharacteristicTIME DELAY SINGLE LOCATION
Thread Quantity Per Inch32
Center To Center Distance Between0.906 INCHES MAXIMUM
Pole Quantity1
Vendor Part NumbersT505 004 329, AP1RC-114-129
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 2638051-129 available?
We can source 2638051-129 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 2638051-129 by Lockheed Martin Librascope obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 2638051-129 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 2638051-129?
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 2638051-129?
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.