L3Harris Maritime Power & Energy Solutions, Inc. · Electronic Components
ETN4979
Tripper, Circuit Breaker
Part NumberETN4979
ManufacturerL3Harris Maritime Power & Energy Solutions, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-248-1103 (NSN)
Federal Item NameTRIPPER,CIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Body StyleRECTANGULAR DIMENSIONAL ENVELOPE
Overall Length4.594 INCHES NOMINAL
Overall Height3.844 INCHES NOMINAL
Mounting Facility Type And Quantit2 TERMINAL
Trip Release MethodTHERMAL ALL LOCATIONS
Trip Release CharacteristicINSTANTANEOUS AND TIME DELAY ALL LOCATIONS
Internal Trip Release ConfiguratioSERIES TRIP ALL LOCATIONS
Ultimate Trip Rating Of Continuous150.0 ALL LOCATIONS
Overall Width3.531 INCHES NOMINAL
Operating Voltage Type And Rating250.0 DC ALL LOCATIONS
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
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 ETN4979 available?
We can source ETN4979 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 ETN4979 by L3Harris Maritime Power & Energy Solutions, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If ETN4979 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 ETN4979?
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 ETN4979?
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.