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US Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · Electronic Components
SM-A-973939-13
Circuit Breaker
Part NumberSM-A-973939-13
ManufacturerUS Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-166-9675 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Actuator Position DesignationAT EACH POLE
Trip Delay Time In Seconds Per Rat15.000 MINIMUM AT 200 PCT AND 95.000 MAXIMUM AT 200 PCT ALL LOCATIONS
Body Length7.115 INCHES MINIMUM AND 7.135 INCHES MAXIMUM
Boss Height0.208 INCHES MINIMUM AND 0.228 INCHES MAXIMUM
Pole Quantity3
Mounting Facility Type And Quantit4 THREADED HOLE(S) AND 6 UNTHREADED HOLE(S)
Unthreaded Mounting Hole Diameter0.031 INCHES NOMINAL
Distance Between Centerlines Of Mo1.490 INCHES MINIMUM AND 1.510 INCHES MAXIMUM
Thread Quantity Per Inch32
Fragility FactorMODERATELY RUGGED
Center To Center Distance Between1.500 INCHES NOMINAL
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 SM-A-973939-13 available?
We can source SM-A-973939-13 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 SM-A-973939-13 by US Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If SM-A-973939-13 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 SM-A-973939-13?
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 SM-A-973939-13?
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.