MIL-SPEC · Electronic Components
M55629/1-121
Circuit Breaker
Part NumberM55629/1-121
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-308-7179 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Trip Release CharacteristicTIME DELAY SINGLE LOCATION
Main Contact Tripping Mechanism TyTRIP FREE
Maximum Interrupting Capacity Curr2000.0 DC SINGLE LOCATION
Actuator FunctionTRIP-RESET
Ultimate Trip Rating Of Continuous115.0 SINGLE LOCATION
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Operating Voltage Type And Rating50.0 DC SINGLE LOCATION
Internal Trip Release ConfiguratioSERIES TRIP SINGLE LOCATION
Pole Quantity1
Mounting Surface To Terminal End D2.475 INCHES NOMINAL
Storage TypeGENERAL PURPOSE WAREHOUSE
Cancelled NSN5925-00-902-8028 (cancelled)
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 M55629/1-121 available?
We can source M55629/1-121 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 M55629/1-121 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If M55629/1-121 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 M55629/1-121?
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 M55629/1-121?
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.