Asco Power Technologies · Electronic Components
1054-188S57B
Relay, Electromagnetic
Part Number1054-188S57B
ManufacturerAsco Power Technologies
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-121-5826 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Terminal Type And Quantity2 SCREW ENERGIZING ELEMENT
Overall Length8.000 INCHES NOMINAL
Center To Center Distance Between7.000 INCHES NOMINAL SINGLE MOUNTING FACILITY
Operating Voltage Rating And Type208.0 VOLTS AC 25 DEG CELSIUS SINGLE WINDING
Frequency In Hertz60.0 NOMINAL
Main Contact Maximum Voltage Ratin240.0 AC
Duty TypeCONTINUOUS
Unthreaded Mounting Hole Diameter0.250 INCHES NOMINAL SINGLE MOUNTING FACILITY
Overall Width4.000 INCHES NOMINAL
Winding Quantity1
Main Contact Load Current Rating A25.0 AMPERES AC RESISTIVE LOAD
Vendor Part Numbers188S57
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 1054-188S57B available?
We can source 1054-188S57B 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 1054-188S57B by Asco Power Technologies obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1054-188S57B 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 1054-188S57B?
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 1054-188S57B?
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.