Square D · Electronic Components
QON3B
CIRCUIT BREAKER OEM MOUNTING BASE QOB
Part NumberQON3B
ManufacturerSquare D
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-656-3013 (NSN)
Federal Item NameBASE,CIRCUIT BREAKER
Overall Length12.50 INCHES NOMINAL
Overall Width9.70 INCHES NOMINAL
Overall Height4.80 INCHES NOMINAL
Features ProvidedROHS DIRECTIVE COMPLIANCE
Special FeaturesLOAD CENTER MOUNTING BASE (QO), 100A, TIN PLATED COPPER, 3-PHASE,
Usage DesignCIRCUIT BREAKER OEM MOUNTING BASE QOB
Federal Supply Class5925 — Circuit Breakers
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 QON3B available?
We can source QON3B 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 QON3B by Square D obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If QON3B 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 QON3B?
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 QON3B?
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.