MIL-SPEC · Electronic Components
M55629/4-066
Circuit Breaker
Part NumberM55629/4-066
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-026-5844 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Maximum Interrupting Capacity Curr1000.0 AC ALL LOCATIONS1000.0 AC ALL LOCATIONS
Operating Voltage Type And Rating240.0 AC ALL LOCATIONS240.0 AC ALL LOCATIONS
Reset MethodMANUALMANUAL
Main Contact Tripping Mechanism TyTRIP FREETRIP FREE
Trip Release MethodMAGNETIC ALL LOCATIONSMAGNETIC ALL LOCATIONS
Ultimate Trip Rating Of Continuous125.0 ALL LOCATIONS125.0 ALL LOCATIONS
Trip Release CharacteristicTIME DELAY ALL LOCATIONSTIME DELAY ALL LOCATIONS
Circuit Protection TypeOVERCURRENT ALL LOCATIONSOVERCURRENT ALL LOCATIONS
Body StyleMULTIPOLE-MULTIPLE ACTUATOR TYPEMULTIPOLE-MULTIPLE ACTUATOR TYPE
Maximum Continuous Load Current Ra8.0 AMPERES AC ALL LOCATIONS8.0 AMPERES AC ALL LOCATIONS
Mounting Facility Type And Quantit4 THREADED HOLE(S)4 THREADED HOLE(S)
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 M55629/4-066 available?
We can source M55629/4-066 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 M55629/4-066 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If M55629/4-066 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 M55629/4-066?
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 M55629/4-066?
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.