Square D · Electronic Components
QOU120
CIRCUIT BREAKER, THERMAL MAG, 1P, 20A
Part NumberQOU120
ManufacturerSquare D
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-040-7979 (NSN)
Federal Item NameCIRCUIT BREAKER
MaterialPLASTIC CASEPLASTIC CASE
Terminals1 CLIP AND 1 CLIP AND 1 SCREW1 SCREW
Body StyleSINGLE POLE TYPESINGLE POLE TYPE
Operating Voltage Type And Rating240.0 AC SINGLE LOCATION240.0 AC SINGLE LOCATION
Ultimate Trip Rating Of Continuous125.0 SINGLE LOCATION125.0 SINGLE LOCATION
Trip Release MethodTHERMAL-MAGNETIC SINGLE LOCATIONTHERMAL-MAGNETIC SINGLE LOCATION
Trip Release CharacteristicTIME DELAY SINGLE LOCATIONTIME DELAY SINGLE LOCATION
Reset MethodMANUALMANUAL
Main Contact Tripping Mechanism TyTRIP FREETRIP FREE
Maximum Interrupting Capacity Curr10000.0 AC SINGLE LOCATION10000.0 AC SINGLE LOCATION
Federal Supply Class5925 — Circuit Breakers
Maximum Continuous Load Current Ra20.0 AMPERES AC SINGLE LOCATION20.0 AMPERES AC SINGLE LOCATION
Circuit Protection TypeOVERCURRENT SINGLE LOCATIONOVERCURRENT SINGLE LOCATION
Boss Height0.160 INCHES NOMINAL0.160 INCHES NOMINAL
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 QOU120 available?
We can source QOU120 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 QOU120 by Square D obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If QOU120 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 QOU120?
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 QOU120?
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.