Square D · Electronic Components
QO120HM
MINI CIRCUIT BREAKER 120/240V 20A_
Part NumberQO120HM
ManufacturerSquare D
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-028-2492 (NSN)
Federal Item NameCIRCUIT BREAKER
MaterialPLASTIC CASEPLASTIC CASE
Terminals1 CLIP AND 1 CLIP AND 1 SCREW1 SCREW
Body StyleSINGLE POLE TYPESINGLE POLE TYPE
Reset MethodMANUALMANUAL
Operating Voltage Type And Rating240.0 AC SINGLE LOCATION240.0 AC SINGLE LOCATION
Circuit Protection TypeOVERCURRENT SINGLE LOCATIONOVERCURRENT SINGLE LOCATION
Trip Release MethodMAGNETIC SINGLE LOCATIONMAGNETIC SINGLE LOCATION
Body Height2.312 INCHES NOMINAL2.312 INCHES NOMINAL
Main Contact Tripping Mechanism TyTRIP FREETRIP FREE
Maximum Continuous Load Current Ra20.0 AMPERES AC SINGLE LOCATION20.0 AMPERES AC SINGLE LOCATION
Federal Supply Class5925 — Circuit Breakers
Ultimate Trip Rating Of Continuous125.0 SINGLE LOCATION125.0 SINGLE LOCATION
Maximum Interrupting Capacity Curr10000.0 AC SINGLE LOCATION10000.0 AC SINGLE LOCATION
Trip Release CharacteristicTIME DELAY SINGLE LOCATIONTIME DELAY SINGLE LOCATION
Mounting Facility Type And Quantit1 TERMINAL1 TERMINAL
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 QO120HM available?
We can source QO120HM 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 QO120HM by Square D obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If QO120HM 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 QO120HM?
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 QO120HM?
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.