Square D · Electronic Components
QOB3100
MINIATURE CIRCUIT BREAKER 240V 100A
Part NumberQOB3100
ManufacturerSquare D
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-252-7781 (NSN)
Additional NSNs5925-01-533-7008
Federal Item NameCIRCUIT BREAKER
MaterialPLASTIC CASE
Terminals3 TAB W/SCREW AND 3 CLIP
Body StyleMULTIPOLE-SINGLE ACTUATOR TYPE
Body Length3.000 INCHES NOMINAL
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
Arc Quenching MethodAIR
Ultimate Trip Rating Of Continuous130.0 ALL LOCATIONS
Maximum Continuous Load Current Ra100.0 AMPERES AC ALL LOCATIONS
Trip Release CharacteristicTIME DELAY ALL LOCATIONS
Main Contact Tripping Mechanism TyTRIP FREE
Federal Supply Class5925 — Circuit Breakers
Terminal Type And Quantity3 TAB W/SCREW AND 3 CLIP
Pole Quantity3
Maximum Interrupting Capacity Curr10000.0 AC ALL LOCATIONS
Reset MethodMANUAL
ESD/EMICode A — ESD/EMI sensitive item
Operating Voltage Type And Rating240.0 AC ALL LOCATIONS
Trip Release MethodTHERMAL-MAGNETIC ALL LOCATIONS
Frequency In Hertz50.0 ALL LOCATIONS
Vendor Part NumbersA3274001-208
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 QOB3100 available?
We can source QOB3100 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 QOB3100 by Square D obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If QOB3100 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 QOB3100?
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 QOB3100?
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.