Bae Systems Information And Electronic Systems Integration Inc. · Electronic Components
555253-003
Relay, Thermal
Part Number555253-003
ManufacturerBae Systems Information And Electronic Systems Integration Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-023-1855 (NSN)
Federal Item NameRELAY,THERMAL
Federal Supply Class5945 — Relays and Solenoids
Contact ArrangementSINGLE POLE, SINGLE THROW, NORMALLY OPEN
Overall Height0.876 INCHES NOMINAL
Environmental ProtectionHERMETIC
Heater Voltage Rating In Volts26.0
Overall Length1.375 INCHES NOMINAL
Delay Time In Seconds40.0 FIXED OPERATE NOMINAL
Heater Power Rating In Watts4.0
Mounting Facility Type And Quantit2 UNTHREADED HOLE(S)
Contact Maximum Voltage Rating In115.0 AC AND 32.0 DC
Overall Width1.344 INCHES NOMINAL
Contact Maximum Current Rating In1.0 AC OR 0.05 DC
Vendor Part NumbersTDR0500, FR-40S-NO-28
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 555253-003 available?
We can source 555253-003 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 555253-003 by Bae Systems Information And Electronic Systems Integration Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 555253-003 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 555253-003?
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 555253-003?
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.