Northrop Grumman Systems Corporation · Electronic Components
21B001
Relay, Electromagnetic
Part Number21B001
ManufacturerNorthrop Grumman Systems Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-238-3042 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Overall Length3.560 INCHES NOMINAL
Frequency In Hertz50.0 MINIMUM AND 60.0 MAXIMUM
Operating Voltage Rating And Type115.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
Winding Quantity1
Coil Quantity1
Mounting Facility Type And Quantit2 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Overall Width2.810 INCHES NOMINAL
Nominal Operating Current Rating A10.0 AMPERES AC SINGLE WINDING
Winding Dc Resistance Rating400.0 OHMS NOMINAL SINGLE WINDING
Terminal Type And Quantity8 PIN ALL FUNCTIONS
Mounting Facility PatternIN-LINE SINGLE MOUNTING FACILITY
Vendor Part Numbers155AX8
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 21B001 available?
We can source 21B001 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 21B001 by Northrop Grumman Systems Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 21B001 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 21B001?
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 21B001?
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.