MIL-SPEC · Electronic Components
M55629/5-128
Circuit Breaker
Part NumberM55629/5-128
ManufacturerMIL-SPEC
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-128-6694 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Trip Delay Time In Seconds Per Rat0.130 MINIMUM AT 200 PCT AND 1.400 MAXIMUM AT 200 PCT ALL LOCATIONS
Test Data Document81349-MIL-C-55629 SPECIFICATION (INCLUDES ENGINEERING TYPE BULLETINS, BROCHURES,ETC., THAT REFLECT SPECIFICATION TYPE DA
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
Reset MethodMANUAL
Ultimate Trip Rating Of Continuous125.0 ALL LOCATIONS
Trip Release MethodMAGNETIC ALL LOCATIONS
Maximum Interrupting Capacity Curr2000.0 DC ALL LOCATIONS
Operating Voltage Type And Rating50.0 DC ALL LOCATIONS
Main Contact Tripping Mechanism TyTRIP FREE
Maximum Continuous Load Current Ra50.0 AMPERES DC ALL LOCATIONS
Body Width2.156 INCHES MINIMUM AND 2.344 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 M55629/5-128 available?
We can source M55629/5-128 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 M55629/5-128 by MIL-SPEC obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If M55629/5-128 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 M55629/5-128?
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 M55629/5-128?
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.