NAVAIR/NAVSEA Design Activity · Electronic Components
2938663-1
Arrester, Electrical Surge
Part Number2938663-1
ManufacturerNAVAIR/NAVSEA Design Activity
AvailabilityAvailable to order — request a quote
Specifications
NSN5920-01-121-8021 (NSN)
Federal Item NameARRESTER,ELECTRICAL SURGE
Federal Supply Class5920 — Fuses and Lightning Arresters
Terminal Quantity2
Overall Diameter2.750 INCHES NOMINAL
Overall Length2.750 INCHES MAXIMUM
Body MaterialCERAMIC
Terminal TypeTHREADED STUD AND SCREW
Usage DesignINDOOR AND OUTDOOR
Mounting ConfigurationSIX EQUALLY SPACED 0.177 IN. DIAMETER HOLES ON 2.375 IN. DIAMETER BOLT CIRCLE MTD IN ANY POSITION
Mounting MethodBOLT
Breakdown Voltage3.000 KILOVOLTS MINIMUM AND 12.000 KILOVOLTS 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 2938663-1 available?
We can source 2938663-1 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 2938663-1 by NAVAIR/NAVSEA Design Activity obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 2938663-1 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 2938663-1?
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 2938663-1?
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.