Telephone Company Of America Incorporated · Electronic Components
50143-5
Circuit Breaker
Part Number50143-5
ManufacturerTelephone Company Of America Incorporated
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-299-7809 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Operating Voltage Type And Rating125.0 AC SINGLE LOCATION
Fragility FactorMODERATELY RUGGED
Trip Release MethodMAGNETIC-HYDRAULIC SINGLE LOCATION
Reset MethodMANUAL
Body Length3.709 INCHES MINIMUM AND 3.729 INCHES MAXIMUM
Main Contact Tripping Mechanism TyTRIP FREE
Circuit Protection TypeOVERCURRENT SINGLE LOCATION
MaterialPLASTIC CASE
Arc Quenching MethodMAGNETIC BLOWOUT
Distance Between Centerlines Of Mo2.740 INCHES MINIMUM AND 2.760 INCHES MAXIMUM
Mounting Facility Type And Quantit2 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 50143-5 available?
We can source 50143-5 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 50143-5 by Telephone Company Of America Incorporated obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 50143-5 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 50143-5?
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 50143-5?
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.