Square D · Electronic Components
QO280
CIRCUIT BREAKER, THERMAL MAG, 2P, 80A
Part NumberQO280
ManufacturerSquare D
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-674-6156 (NSN)
Federal Item NameCIRCUIT BREAKER
MaterialPLASTIC CASE
Terminals2 KNIFE BLADE
Body StyleMULTIPOLE-SINGLE ACTUATOR TYPE
Reset MethodMANUAL
Trip Release MethodSOLID STATE ALL LOCATIONS
Trip Release CharacteristicINSTANTANEOUS ALL LOCATIONS
Body Length3.5 INCHES NOMINAL
Body Width1.5 INCHES NOMINAL
Body Height2.91 INCHES NOMINAL
Mounting Facility Type And Quantit1 PLUG-IN
Federal Supply Class5925 — Circuit Breakers
Pole Quantity2
Terminal Type And Quantity2 KNIFE BLADE
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 QO280 available?
We can source QO280 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 QO280 by Square D obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If QO280 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 QO280?
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 QO280?
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.