Master Control Systems · Electronic Components
A-303-191
Voltmeter — Test Instruments
Part NumberA-303-191
ManufacturerMaster Control Systems
AvailabilityAvailable to order — request a quote
Specifications
NSN6625-01-466-3589 (NSN)
Federal Item NameVOLTMETER
Federal Supply Class6625 — Test Instruments
Overall Length1.750 INCHES NOMINAL
Overall Height2.500 INCHES NOMINAL
Power SourceEXTERNAL
Circuit Current For Which DesignedAC
Overall Width3.250 INCHES NOMINAL
Installation DesignCABINET
Meter Depth Behind Mounting Flange0.615 INCHES NOMINAL
Indicator TypeDIAL W/POINTER
Style DesignatorRECTANGULAR FLUSH MTG
Circuit Attachment Method And Quan4 SOLDER STUD
Dial Scale Marking ColorBLACK SINGLE INDICATOR ALL RANGES
ESD/EMICode A — ESD/EMI sensitive item
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 A-303-191 available?
We can source A-303-191 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 A-303-191 by Master Control Systems obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If A-303-191 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 A-303-191?
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 A-303-191?
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.