MIL-SPEC · Electronic Components
M55629/20NK
Circuit Breaker
Part NumberM55629/20NK
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-249-2717 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Body Width0.735 INCHES MINIMUM AND 0.765 INCHES MAXIMUM
Nominal Thread Size0.500 INCHES
Test Data Document81349-MIL-C-55629 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DA
Pole Quantity1
Nonturn Device Radius0.641 INCHES MINIMUM AND 0.671 INCHES MAXIMUM
Main Contact Tripping Mechanism TyTRIP FREE
Fragility FactorMODERATELY RUGGED
Center To Center Distance Between1.499 INCHES MINIMUM AND 1.561 INCHES MAXIMUM
Nonturn Device Diameter0.138 INCHES NOMINAL
Arc Quenching MethodMAGNETIC BLOWOUT
Maximum Continuous Load Current Ra10.0 AMPERES DC SINGLE LOCATION
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 M55629/20NK available?
We can source M55629/20NK 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 M55629/20NK by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If M55629/20NK 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 M55629/20NK?
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 M55629/20NK?
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.