Essex Electro Engineers · Electronic Components
A578-1301
Ammeter — Test Instruments
Part NumberA578-1301
ManufacturerEssex Electro Engineers
AvailabilityAvailable to order — request a quote
Specifications
NSN6625-01-045-0440 (NSN)
Federal Item NameAMMETER
Federal Supply Class6625 — Test Instruments
Power SourceEXTERNAL
Mounting Facility Type And Quantit3 SCREW AND 3 UNTHREADED HOLE(S)
Scale Graduation TypeLINEAR SINGLE INDICATOR ALL RANGES
Mounting Bolt Circle Diameter3.160 INCHES NOMINAL
Dial Scale Marking ColorBLACK SINGLE INDICATOR ALL RANGES
Pointer ColorBLACK SINGLE INDICATOR ALL RANGES
Circuit Construction TypeNONELECTRONIC
Mounting Hole Diameter0.150 INCHES NOMINAL
Measurement Range+0.0 TO 50.0 AMPERES, AC SINGLE INDICATOR FIRST RANGE
Movement TypeMOVING IRON VANE
Meter Depth Behind Mounting Flange1.250 INCHES MAXIMUM
Vendor Part Numbers637-17137, 73C5110A0067
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 A578-1301 available?
We can source A578-1301 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 A578-1301 by Essex Electro Engineers obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If A578-1301 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 A578-1301?
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 A578-1301?
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.