Telephone Company Of America Incorporated · Electronic Components
B40421-1
Circuit Breaker
Part NumberB40421-1
ManufacturerTelephone Company Of America Incorporated
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-240-3424 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Operating Voltage Type And Rating230.0 AC SINGLE LOCATION230.0 AC SINGLE LOCATION
Ultimate Trip Rating Of Continuous125.0 SINGLE LOCATION125.0 SINGLE LOCATION
Maximum Continuous Load Current Ra6.5 AMPERES AC SINGLE LOCATION6.5 AMPERES AC SINGLE LOCATION
Trip Release MethodMAGNETIC-HYDRAULIC SINGLE LOCATIONMAGNETIC-HYDRAULIC SINGLE LOCATION
Main Contact Tripping Mechanism TyTRIP FREETRIP FREE
Maximum Interrupting Capacity Curr5000.0 AC SINGLE LOCATION5000.0 AC SINGLE LOCATION
Trip Release CharacteristicTIME DELAY SINGLE LOCATIONTIME DELAY SINGLE LOCATION
Reset MethodMANUALMANUAL
Thread Quantity Per Inch3232
Arc Quenching MethodMAGNETIC BLOWOUTMAGNETIC BLOWOUT
Center To Center Distance Between4.303 INCHES MINIMUM AND 4.303 INCHES MINIMUM AND 4.323 INCHES MAXIMUM4.323 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 B40421-1 available?
We can source B40421-1 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 B40421-1 by Telephone Company Of America Incorporated obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If B40421-1 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 B40421-1?
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 B40421-1?
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.