General Electric Company · Electronic Components
157B2178PIECE4
Relay, Electromagnetic
Part Number157B2178PIECE4
ManufacturerGeneral Electric Company
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-01-165-5194 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Overall Length5.600 INCHES NOMINAL
Environmental ProtectionDUSTPROOF
Duty TypeCONTINUOUS
Nonpile Up Auxiliary Contact Arran1 POLE, SINGLE THROW, NORMALLY OPEN, MOMENTARY ACTION AND 1 POLE, SINGLE THROW, NORMALLY CLOSED, MOMENTARY ACTION
Unthreaded Mounting Hole Diameter0.219 INCHES NOMINAL SINGLE MOUNTING FACILITY
Main Contact Maximum Voltage Ratin480.0 AC
Overall Height5.160 INCHES NOMINAL
Auxiliary Contact Maximum Voltage115.0 AC
Auxiliary Contact Load Current Rat10.0 AMPERES AC RESISTIVE LOAD
Center To Center Distance Between4.000 INCHES NOMINAL SINGLE MOUNTING FACILITY
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Vendor Part NumbersIC5181D101A6AA
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 157B2178PIECE4 available?
We can source 157B2178PIECE4 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 157B2178PIECE4 by General Electric Company obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 157B2178PIECE4 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 157B2178PIECE4?
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 157B2178PIECE4?
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.