Cooper Wheelock, Inc. · Electronic Components
CRTT40
Relay, Electromagnetic
Part NumberCRTT40
ManufacturerCooper Wheelock, Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-825-7181 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Nonpile Up Main Contact Arrangemen1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION
Mounting Facility Type And Quantit2 SLOTTED HOLE AND 1 UNTHREADED HOLE(S) SINGLE MOUNTING FACILITY
Environmental ProtectionDUSTPROOF
Mounting Slot Width0.438 INCHES NOMINAL SINGLE MOUNTING FACILITY
Frequency In Hertz20.0 NOMINAL
Duty TypeCONTINUOUS
Winding Quantity1
Terminal Type And Quantity4 PIN ALL FUNCTIONS
Coil Quantity1
Main Contact Maximum Voltage Ratin115.0 AC
Overall Height3.500 INCHES NOMINAL
Vendor Part NumbersKS16626L8
Cancelled NSN5945-00-071-0411 (cancelled)
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 CRTT40 available?
We can source CRTT40 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 CRTT40 by Cooper Wheelock, Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If CRTT40 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 CRTT40?
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 CRTT40?
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.