General Motors · Electronic Components
27D
Relay, Electromagnetic
Part Number27D
ManufacturerGeneral Motors
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-244-4328 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Nonpile Up Main Contact Arrangemen3 POLE, DOUBLE THROW, ONE POSITION MOMENTARY
Overall Height2.310 INCHES NOMINAL
Main Contact Maximum Voltage Ratin28.0 DC
Coil Quantity1
Mounting Facility Type And Quantit2 UNTHREADED HOLE(S) FIRST MOUNTING FACILITY
Winding Quantity1
Unthreaded Mounting Hole Diameter0.154 INCHES NOMINAL FIRST MOUNTING FACILITY
Center To Center Distance Between1.375 INCHES NOMINAL SINGLE MOUNTING FACILITY
Operating Voltage Rating And Type28.0 VOLTS DC 25 DEG CELSIUS SINGLE WINDING
Winding Dc Resistance Rating150.0 OHMS NOMINAL SINGLE WINDING
Overall Width1.620 INCHES NOMINAL
Vendor Part Numbers12957-1
Schematic Diagram DesignatorNO COMMON OR GROUNDED ELECTRODE(S)
Nonderated Operating Temp0.0 CELSIUS MINIMUM AND 85.0 CELSIUS MAXIMUM
Terminal Type And Quantity2 TAB, SOLDER LUG
Capacitive Electrode MaterialALUMINUM
Body StyleW/TWIST TAB MTG, TERMINAL(S) ON ONE END
Nonderated Continuous Voltage Rati25.0 DC SINGLE SECTION
Electrical PolarizationNONPOLARIZED
Capacitance Value Per Section2000.000 MICROFARADS SINGLE SECTION
Body Length3.000 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 27D available?
We can source 27D 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 27D by General Motors obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 27D 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 27D?
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 27D?
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.