Naval Ship Systems Command · Electronic Components
29478
Circuit Breaker
Part Number29478
ManufacturerNaval Ship Systems Command
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-175-5237 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Main Contact Tripping Mechanism TyTRIP FREE
Internal Trip Release ConfiguratioSERIES TRIP ALL LOCATIONS
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
Trip Delay Time In Seconds Per Rat18.000 MINIMUM AT 200 PCT AND 105.000 MAXIMUM AT 200 PCT ALL LOCATIONS
Trip Release MethodTHERMAL ALL LOCATIONS
Maximum Interrupting Capacity Curr5000.0 AC AND 5000.0 DC ALL LOCATIONS
Trip Release CharacteristicTIME DELAY ALL LOCATIONS
Operating Voltage Type And Rating240.0 AC AND 240.0 DC ALL LOCATIONS
Ultimate Trip Rating Of Continuous122.0 ALL LOCATIONS
Unthreaded Mounting Hole Diameter0.188 INCHES NOMINAL
Pole Quantity2
Vendor Part NumbersAT21050, P7767053P10
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 29478 available?
We can source 29478 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 29478 by Naval Ship Systems Command obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 29478 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 29478?
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 29478?
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.