Square D · Electronic Components
QOB120
CIRCUIT BREAKER, 1
Part NumberQOB120
ManufacturerSquare D
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-728-1289 (NSN)
Additional NSNs5925-01-533-7003
Federal Item NameCIRCUIT BREAKER
MaterialPLASTIC CASE
Terminals1 CLIP AND 1 COMPRESSION
Body StyleSINGLE POLE TYPE
Maximum Continuous Load Current Ra20.0 AMPERES AC SINGLE LOCATION
Ultimate Trip Rating Of Continuous125.0 SINGLE LOCATION
Circuit Protection TypeOVERCURRENT SINGLE LOCATION
Body Height3.180 INCHES NOMINAL
Mounting Facility Type And Quantit2 TERMINAL
Pole Quantity1
Storage TypeGENERAL PURPOSE WAREHOUSE
Federal Supply Class5925 — Circuit Breakers
Boss Height0.160 INCHES NOMINAL
Trip Delay Time In Seconds Per Rat15.000 NOMINAL AT 200 PCT AND 5.000 NOMINAL AT 300 PCT SINGLE LOCATION
Frequency In Hertz60.0 SINGLE LOCATION
Terminal Type And Quantity1 CLIP AND 1 COMPRESSION
Cancelled NSN5925-00-534-6593 (cancelled)
ESD/EMICode A — ESD/EMI sensitive item
Operating Voltage Type And Rating120.0 AC SINGLE LOCATION
Reset MethodMANUAL
Trip Release MethodTHERMAL-MAGNETIC SINGLE LOCATION
Vendor Part NumbersA3274001-210
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 QOB120 available?
We can source QOB120 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 QOB120 by Square D obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If QOB120 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 QOB120?
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 QOB120?
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.