Bussmann · Electronic Components
4121
BUSS TWIN CLIP ASSY
Part Number4121
ManufacturerBussmann
AvailabilityAvailable to order — request a quote
Specifications
NSN5950-00-219-8681 (NSN)
Federal Item NameTRANSFORMER,POWER
Federal Supply Class5950 — Coils and Transformers
Body Height3.781 INCHES NOMINAL
Thread Series DesignatorUNIFIED NATIONAL COARSE (UNC) SINGLE GROUP
Reliability IndicatorNOT ESTABLISHED
Inclosure TypeHERMETICALLY SEALED
Center To Center Distance Between1.859 INCHES NOMINAL SINGLE MOUNTING FACILITY SINGLE CENTER GROUP
Winding Function And Quantity1 PRIMARY AND 3 SECONDARY SINGLE COMPONENT
Mounting MethodTHREADED STUD(S) SINGLE GROUP
Mounting Facility Quantity4 SINGLE GROUP
Winding Operating Voltage120.00 AC VOLTS NOMINAL SINGLE COMPONENT SINGLE PRIMARY
Body Width2.5715 INCHES NOMINAL
Terminal Type And Quantity9 EYELET
Vendor Part NumbersE4121-001
Cancelled NSN5950-00-219-8687 (cancelled)
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 4121 available?
We can source 4121 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 4121 by Bussmann obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 4121 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 4121?
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 4121?
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.