Epco Products Co · Electronic Components
1285-28
Transformer, Power
Part Number1285-28
ManufacturerEpco Products Co
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-187-2674 (NSN)
Federal Item NameTRANSFORMER,POWER
Federal Supply Class5950 — Coils and Transformers
Terminal Type And Quantity9 TAB, SOLDER LUG
Winding Operating Voltage500.00 AC VOLTS NOMINAL SINGLE COMPONENT FIRST SECONDARY
Winding Operating Current4.0 AMPERES AC MAXIMUM SINGLE COMPONENT SECOND SECONDARY
Input Output Phase RelationshipSINGLE PHASE TO SINGLE PHASE SINGLE COMPONENT
Center To Center Distance Between3.562 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP
Mounting Facility Quantity4 SINGLE GROUP
Body Length3.625 INCHES NOMINAL
Inclosure TypeHERMETICALLY SEALED
Winding Function And Quantity1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
Body Outside Diameter4.438 INCHES NOMINAL
Mounting MethodFLANGE AND UNTHREADED HOLE(S) SINGLE GROUP
Vendor Part NumbersEP28
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 1285-28 available?
We can source 1285-28 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 1285-28 by Epco Products Co obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1285-28 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 1285-28?
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 1285-28?
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.