Square D · Electronic Components
QOU320
CIRCUIT BREAKER, THERMAL MAG, 3P, 20A
Part NumberQOU320
ManufacturerSquare D
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-316-1713 (NSN)
Federal Item NameCIRCUIT BREAKER
MaterialPLASTIC CASE
Terminals6 COMPRESSION
Overall Length5.000 INCHES NOMINAL
Overall Width2.980 INCHES NOMINAL
Overall Height2.250 INCHES NOMINAL
Body StyleRECTANGULAR DIMENSIONAL ENVELOPE
Storage TypeGENERAL PURPOSE WAREHOUSE
Fragility FactorMODERATELY RUGGED
Arc Quenching MethodMAGNETIC BLOWOUT
Mounting Facility Type And Quantit6 CLIP
Federal Supply Class5925 — Circuit Breakers
Pole Quantity3
Inclosure Protection Type For WhicDUSTPROOF
Internal Trip Release ConfiguratioSERIES TRIP ALL LOCATIONS
Manual Actuator Type And Quantity1 TOGGLE
Actuator FunctionTRIP-RESET
Actuator Position DesignationAT POLE TWO
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 QOU320 available?
We can source QOU320 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 QOU320 by Square D obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If QOU320 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 QOU320?
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 QOU320?
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.