Square D · Electronic Components
QOB245
MINIATURE CIRCUIT BREAKER 120/240V 45A
Part NumberQOB245
ManufacturerSquare D
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-676-0122 (NSN)
Federal Item NameCIRCUIT BREAKER
Overall Length2.91 INCHES NOMINAL
Overall Width1.5 INCHES NOMINAL
Overall Height3.12 INCHES NOMINAL
Body StyleMULTIPOLE-SINGLE ACTUATOR TYPE
Special FeaturesTERMINAL: BOX LUGS; MOUNTING STYLE: BOLT ON; LINE RATED AT 45A; WIRE SIZE: 8AWG / 2 AWG (COPPER OR ALUMINUM); AMBIENT TE
Pole Quantity2
Operating Voltage Type And Rating120.0 AC AND 240.0 AC ALL LOCATIONS
Reset MethodMANUAL
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 QOB245 available?
We can source QOB245 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 QOB245 by Square D obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If QOB245 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 QOB245?
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 QOB245?
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.