Square D · Electronic Components
QO330
CIRCUIT BREAKER, 3
Part NumberQO330
ManufacturerSquare D
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-828-4018 (NSN)
Federal Item NameCIRCUIT BREAKER
MaterialPLASTIC CASE
Terminals3 CLIP AND 3 SCREW
Body StyleMULTIPOLE-SINGLE ACTUATOR TYPE
Ultimate Trip Rating Of Continuous125.0 ALL LOCATIONS
Operating Voltage Type And Rating240.0 AC ALL LOCATIONS
Maximum Continuous Load Current Ra30.0 AMPERES AC ALL LOCATIONS
Main Contact Tripping Mechanism TyTRIP FREE
Trip Release CharacteristicTIME DELAY ALL LOCATIONS
Trip Release MethodTHERMAL-MAGNETIC ALL LOCATIONS
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
Federal Supply Class5925 — Circuit Breakers
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 QO330 available?
We can source QO330 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 QO330 by Square D obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If QO330 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 QO330?
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 QO330?
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.