L3Harris Maritime Power & Energy Solutions, Inc. · Electronic Components
ETN5978
Tripper, Circuit Breaker
Part NumberETN5978
ManufacturerL3Harris Maritime Power & Energy Solutions, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-257-9111 (NSN)
Federal Item NameTRIPPER,CIRCUIT BREAKER
Federal Supply Class5925 — Circuit Breakers
Mounting Facility Type And Quantit6 TERMINAL
Actuator FunctionTRIP-RESET
Adjustable Trip Setting Current Ra+650.0 TO 1300.0 AC AND +650.0 TO 1300.0 DC ALL LOCATIONS
Frequency In Hertz60.0 ALL LOCATIONS
Trip Delay Time In Seconds Per Rat3600.000 NOMINAL AT 150 PCT ALL LOCATIONS
Trip Release Ambient Temp Rating50.0 CELSIUS NOMINAL ALL LOCATIONS
Manual Actuator Type And Quantity1 TOGGLE
Terminal Type And Quantity6 SCREW
Actuator Position DesignationAT EACH POLE
Overall Length8.438 INCHES NOMINAL
Trip Release CharacteristicINSTANTANEOUS AND TIME DELAY 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 ETN5978 available?
We can source ETN5978 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 ETN5978 by L3Harris Maritime Power & Energy Solutions, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If ETN5978 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 ETN5978?
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 ETN5978?
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.