Square D · Electronic Components
QOU350
CIRCUIT BREAKER, THERMAL MAG, 3P, 50A
Part NumberQOU350
ManufacturerSquare D
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-411-0843 (NSN)
Federal Item NameCIRCUIT BREAKER
MaterialPLASTIC CASE
Terminals6 COMPRESSION
Body StyleMULTIPOLE-SINGLE ACTUATOR TYPE
Precious MaterialSILVER
Precious Material LocationCONTACTS SILVER
Maximum Continuous Load Current Ra50.0 AMPERES AC ALL LOCATIONS
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
Ultimate Trip Rating Of Continuous125.0 ALL LOCATIONS
Maximum Interrupting Capacity Curr10000.0 AC ALL LOCATIONS
Reset MethodMANUAL
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 QOU350 available?
We can source QOU350 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 QOU350 by Square D obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If QOU350 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 QOU350?
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 QOU350?
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.