MIL-SPEC · Electronic Components
M55629/18FNFNFN
Circuit Breaker
Part NumberM55629/18FNFNFN
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-440-5440 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Trip Release MethodMAGNETIC ALL LOCATIONS
Operating Voltage Type And Rating240.0 AC ALL LOCATIONS
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
Terminal Type And Quantity6 COMPRESSION
Boss Height0.220 INCHES NOMINAL
Distance Between Centerlines Of Mo1.026 INCHES NOMINAL
Pole Quantity3
Center To Center Distance Between1.026 INCHES NOMINAL
Mounting Surface To Terminal End D2.610 INCHES NOMINAL
Mounting Facility Type And Quantit6 THREADED HOLE(S)
Trip Delay Time In Seconds Per Rat20.000 MINIMUM AT 200 PCT AND 200.000 MAXIMUM AT 200 PCT ALL LOCATIONS
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 M55629/18FNFNFN available?
We can source M55629/18FNFNFN 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 M55629/18FNFNFN by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If M55629/18FNFNFN 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 M55629/18FNFNFN?
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 M55629/18FNFNFN?
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.