Filnor Inc. · Electronic Components
1143J
Switch, Knife
Part Number1143J
ManufacturerFilnor Inc.
AvailabilityAvailable to order — request a quote
Specifications
NSN5930-00-224-4938 (NSN)
Federal Item NameSWITCH,KNIFE
Federal Supply Class5930 — Switches
Terminal Type And Quantity4 THREADED STUD
Contact Load Current Rating At Max30.000 AMPERES RESISTIVE DC AND 30.000 AMPERES RESISTIVE AC
Maximum Voltage Rating In Volts250.0 AC AND 250.0 DC
Center To Center Distance Between3.513 INCHES NOMINAL
Body StyleHOLE MOUNTED
Mounting MethodUNTHREADED HOLE(S)
Body Width2.093 INCHES NOMINAL
Body Height4.531 INCHES NOMINAL
Nonpile Up Contact Arrangement2 POLE, SINGLE THROW, BOTH POSITIONS MAINTAINED SINGLE SWITCH UNIT
Body Length9.312 INCHES NOMINAL
Vendor Part NumbersA-1143-J
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 1143J available?
We can source 1143J 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 1143J by Filnor Inc. obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 1143J 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 1143J?
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 1143J?
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.