MIL-SPEC · Electronic Components
M55629/4-040
Circuit Breaker
Part NumberM55629/4-040
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-259-3927 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Ultimate Trip Rating Of Continuous115.0 ALL LOCATIONS
Operating Voltage Type And Rating240.0 AC ALL LOCATIONS
Reset MethodMANUAL
Maximum Continuous Load Current Ra4.0 AMPERES AC ALL LOCATIONS
Thread Pitch Diameters+0.1177 TO 0.1214 INCHES
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC)
Switch Location And Position DesigINTERNAL AT POLE ONE
MaterialPLASTIC CASE
External Actuator Linkage ArrangemONE AND TWO LINKED
Inclosure Protection Type For WhicSHOCK RESISTANT AND VIBRATION RESISTANT
Distance Between Centerlines Of Mo2.046 INCHES MINIMUM AND 2.078 INCHES MAXIMUM
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 M55629/4-040 available?
We can source M55629/4-040 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 M55629/4-040 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If M55629/4-040 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 M55629/4-040?
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 M55629/4-040?
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.