Square D · Electronic Components
QOB220
MINIATURE CIRCUIT BREAKER 120/240V 20A
Part NumberQOB220
ManufacturerSquare D
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-00-967-9874 (NSN)
Federal Item NameCIRCUIT BREAKER
MaterialPLASTIC CASE
Terminals2 QUICK DISCONNECT, MALE AND 2 SCREW
Body StyleMULTIPOLE-SINGLE ACTUATOR TYPE
Trip Release CharacteristicINSTANTANEOUS AND TIME DELAY ALL LOCATIONS
Maximum Interrupting Capacity Curr5000.0 AC ALL LOCATIONS
Main Contact Tripping Mechanism TyTRIP FREE
Circuit Protection TypeOVERCURRENT ALL LOCATIONS
Inclosure Protection Type For WhicFUNGUS RESISTANT
Frequency In Hertz60.0 ALL LOCATIONS
Operating Voltage Type And Rating240.0 AC 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 QOB220 available?
We can source QOB220 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 QOB220 by Square D obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If QOB220 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 QOB220?
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 QOB220?
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.