Excelitas Technologies Corp. · Electronic Components
77-2878
Relay, Electromagnetic
Part Number77-2878
ManufacturerExcelitas Technologies Corp.
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-01-296-0573 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Main Contact Maximum Voltage Ratin250.0 AC
Nonpile Up Main Contact Arrangemen2 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Main Contact Load Current Rating A30.0 AMPERES AC INDUCTIVE LOAD
Center To Center Distance Between1.859 INCHES NOMINAL SINGLE MOUNTING FACILITY
Overall Width2.516 INCHES NOMINAL
Unthreaded Mounting Hole Diameter0.188 INCHES NOMINAL SINGLE MOUNTING FACILITY
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Operating Voltage Rating And Type120.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
Mounting Facility Type And Quantit2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Winding Quantity1
Overall Length2.500 INCHES NOMINAL
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 77-2878 available?
We can source 77-2878 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 77-2878 by Excelitas Technologies Corp. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 77-2878 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 77-2878?
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 77-2878?
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.