L3Harris Maritime Power & Energy Solutions, Inc. · Electronic Components
ET74434
Circuit Breaker
Part NumberET74434
ManufacturerL3Harris Maritime Power & Energy Solutions, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-929-3976 (NSN)
Federal Item NameCIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Trip Release CharacteristicINSTANTANEOUS ALL LOCATIONS
Reset MethodMANUAL
Main Contact Tripping Mechanism TyTRIP FREE
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
Ultimate Trip Rating Of Continuous150.0 ALL LOCATIONS
Maximum Interrupting Capacity Curr15000.0 AC AND 10000.0 DC ALL LOCATIONS
Operating Voltage Type And Rating500.0 AC AND 250.0 DC ALL LOCATIONS
Trip Release MethodTHERMAL-MAGNETIC ALL LOCATIONS
Maximum Continuous Load Current Ra75.0 AMPERES AC AND 75.0 AMPERES DC ALL LOCATIONS
Body Height3.875 INCHES NOMINAL
Boss Height0.187 INCHES NOMINAL
Vendor Part NumbersETN277300S41
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 ET74434 available?
We can source ET74434 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 ET74434 by L3Harris Maritime Power & Energy Solutions, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If ET74434 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 ET74434?
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 ET74434?
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.