Square D · Electronic Components
QOB320
MINIATURE CIRCUIT BREAKER 240V 20A
Part NumberQOB320
ManufacturerSquare D
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-728-1968 (NSN)
Federal Item NameCIRCUIT BREAKER
MaterialPLASTIC CASE
Terminals3 CLIP AND 3 SCREW
Body StyleMULTIPOLE-SINGLE ACTUATOR TYPE
Trip Release MethodTHERMAL-MAGNETIC ALL LOCATIONS
Trip Release CharacteristicINSTANTANEOUS AND TIME DELAY ALL LOCATIONS
Maximum Interrupting Capacity Curr5000.0 AC ALL LOCATIONS
Maximum Continuous Load Current Ra20.0 AMPERES AC ALL LOCATIONS
Main Contact Tripping Mechanism TyTRIP FREE
Reset MethodMANUAL
Ultimate Trip Rating Of Continuous125.0 ALL LOCATIONS
Federal Supply Class5925 — Circuit Breakers
Body Length3.000 INCHES NOMINAL
Frequency In Hertz60.0 ALL LOCATIONS
Storage TypeGENERAL PURPOSE WAREHOUSE
Boss Height0.156 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 QOB320 available?
We can source QOB320 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 QOB320 by Square D obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If QOB320 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 QOB320?
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 QOB320?
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.