Hughes · Electronic Components
PA4
Ammeter — Test Instruments
Part NumberPA4
ManufacturerHughes
AvailabilityAvailable to order — request a quote
Specifications
NSN6625-00-225-7657 (NSN)
Federal Item NameAMMETER
Federal Supply Class6625 — Test Instruments
Features ProvidedZERO ADJUSTER
Measurement Range+0.0 TO 500.0 AMPERES, AC SINGLE INDICATOR SINGLE RANGE
Circuit Attachment Method And Quan2 BINDING POST
Overall Width2.000 INCHES NOMINAL
Overall Height4.500 INCHES NOMINAL
Movement TypeMOVING IRON VANE
Circuit Current For Which DesignedAC
Accuracy In Percent-0.8 TO 0.8 AT FULL SCALE SINGLE INDICATOR ALL RANGES
Dial Scale Marking ColorBLACK ALL INDICATORS SINGLE RANGE
Overall Length4.5000 INCHES NOMINAL
Style DesignatorRECTANGULAR OR SQUARE
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 PA4 available?
We can source PA4 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 PA4 by Hughes obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If PA4 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 PA4?
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 PA4?
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.