Square D · Electronic Components
QO2100
MINIATURE CIRCUIT BREAKER 120/240V 100A
Part NumberQO2100
ManufacturerSquare D
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-089-9928 (NSN)
Federal Item NameCIRCUIT BREAKER
MaterialPLASTIC CASE
Terminals2 CLIP AND 2 COMPRESSION
Body StyleMULTIPOLE-SINGLE ACTUATOR TYPE
Boss Height0.156 INCHES NOMINAL
Distance Between Centerlines Of Mo0.750 INCHES NOMINAL
Trip Release Ambient Temp Rating40.0 CELSIUS NOMINAL ALL LOCATIONS
Unthreaded Mounting Hole Diameter0.190 INCHES NOMINAL
Fragility FactorMODERATELY RUGGED
Pole Quantity2
Center To Center Distance Between1.000 INCHES NOMINAL
Federal Supply Class5925 — Circuit Breakers
Storage TypeGENERAL PURPOSE WAREHOUSE
Mounting Facility Type And Quantit4 UNTHREADED HOLE(S)
Terminal Type And Quantity2 CLIP AND 2 COMPRESSION
Cancelled NSN5925-01-355-0658 (cancelled)
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 QO2100 available?
We can source QO2100 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 QO2100 by Square D obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If QO2100 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 QO2100?
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 QO2100?
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.