Evoqua Water Technologies · Electronic Components
30503A
Relay, Electromagnetic
Part Number30503A
ManufacturerEvoqua Water Technologies
AvailabilityAvailable to order — request a quote
Specifications
NSN5945-00-552-2195 (NSN)
Federal Item NameRELAY,ELECTROMAGNETIC
Federal Supply Class5945 — Relays and Solenoids
Duty TypeINTERMITTENT
Coil Quantity1
Mounting Facility PatternRECTANGULAR SINGLE MOUNTING FACILITY
Frequency In Hertz60.0 NOMINAL
Main Contact Maximum Voltage Ratin115.0 AC
Winding Dc Resistance Rating310.0 OHMS NOMINAL SINGLE WINDING
Overall Height1.870 INCHES NOMINAL
Overall Length2.060 INCHES NOMINAL
Center To Center Distance Between0.875 INCHES NOMINAL SINGLE MOUNTING FACILITY
Main Contact Load Current Rating A5.0 AMPERES AC RESISTIVE LOAD
Nominal Operating Current Rating A50.0 MILLIAMPERES AC SINGLE WINDING
Vendor Part Numbers31086DR3PC39
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 30503A available?
We can source 30503A 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 30503A by Evoqua Water Technologies obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If 30503A 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 30503A?
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 30503A?
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.