Hydro-Aire Aerospace Corp. · Electronic Components
4791
Relay, Electromagnetic
Part Number4791
ManufacturerHydro-Aire Aerospace Corp.
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-539-2955 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Thread Quantity Per Inch32 SINGLE MOUNTING FACILITY
Duty TypeCONTINUOUS
Overall Length1.930 INCHES NOMINAL
Main Contact Maximum Voltage Ratin29.0 DC
Main Contact Load Current Rating A6.0 AMPERES DC RESISTIVE LOAD
Coil Quantity1
Nonpile Up Main Contact Arrangemen2 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Terminal Type And Quantity8 PIN ALL FUNCTIONS
Operating Voltage Rating And Type24.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Overall Height1.540 INCHES NOMINAL
Overall Width1.250 INCHES NOMINAL
Cancelled NSN5945-00-589-7715 (cancelled)
Adjustment Device Type And Quantit1 SLOTTED SCREW
Application DesignTRANSMISSION LINE
Frequency Range4.000 GIGAHERTZ MINIMUM AND 18.000 GIGAHERTZ MAXIMUM
Mounting Facility Type And Quantit2 CONNECTOR
Voltage Standing Wave Ratio1.30 AND 1.50
Coaxial Connector Series DesignatiSMA
Power Rating5.0 WATTS AVERAGE AND 3.0 KILOWATTS PEAK
Vendor Part Numbers91489467
Reliability IndicatorNOT ESTABLISHED
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 4791 available?
We can source 4791 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 4791 by Hydro-Aire Aerospace Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 4791 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 4791?
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 4791?
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.