Ems Development Corporation · Electronic Components
258S030-1
Transformer, Power
Part Number258S030-1
ManufacturerEms Development Corporation
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-01-172-8564 (NSN)
Federal Item NameTRANSFORMER,POWER
Federal Supply Class5950 — Coils and Transformers
Reliability IndicatorNOT ESTABLISHED
Winding Operating Voltage440.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Center To Center Distance Between3.495 INCHES MINIMUM AND 3.505 INCHES MAXIMUM SINGLE MOUNTING FACILITY SINGLE CENTER GROUP
Input Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Maximum Operating Temp130.0 CELSIUS
Body Length5.200 INCHES MINIMUM AND 5.300 INCHES MAXIMUM
Winding Shielding MethodINTERNAL SHIELD BROUGHT OUT TO TERMINAL SINGLE COMPONENT
Mounting MethodUNTHREADED HOLE(S) SINGLE GROUP
Inclosure TypeFULLY INCLOSED
Mounting Facility Quantity4 SINGLE GROUP
Winding Function And Quantity1 PRIMARY AND 1 SECONDARY SINGLE COMPONENT
Vendor Part NumbersB83A
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 258S030-1 available?
We can source 258S030-1 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 258S030-1 by Ems Development Corporation obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 258S030-1 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 258S030-1?
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 258S030-1?
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.