Lockheed Martin Corp. · Electronic Components
740048-3
Circuit Breaker
Part Number740048-3
ManufacturerLockheed Martin Corp.
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-780-7926 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Operating Voltage Type And Rating120.0 AC AND 28.0 DC ALL LOCATIONS
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
Actuator Position DesignationAT EACH POLE
Mounting Surface To Terminal End D2.332 INCHES MAXIMUM
Center To Center Distance Between0.750 INCHES NOMINAL
Thread Quantity Per Inch32
Actuator FunctionTRIP-RESET
Manual Actuator Type And Quantity2 PUSH-PULL
Mounting Facility Type And Quantit1 THREADED BUSHING
Nominal Thread Size0.469 INCHES
MaterialPLASTIC CASE
Vendor Part Numbers1540-005-1
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 740048-3 available?
We can source 740048-3 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 740048-3 by Lockheed Martin Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 740048-3 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 740048-3?
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 740048-3?
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.