Square D · Electronic Components
QO2L40RB
LOAD CENTER QO MLO 240V 40A 1PH 2SP
Part NumberQO2L40RB
ManufacturerSquare D
AvailabilityAvailable to order — request a quote
Specifications
NSN5925-01-316-3065 (NSN)
Federal Item NameCIRCUIT BREAKER BOX
MaterialSTEEL
Mounting MethodUNTHREADED HOLE(S)
Overall Width4.810 INCHES NOMINAL
Overall Height9.180 INCHES NOMINAL
Special FeaturesITEM IS RAINPROOF AND UL LISTED
Circuit Breaker Type And Quantity2 SINGLE POLE
Main Line Maximum Current Rating I40.0
System For Which DesignedTHREE WIRE SINGLE PHASE
Style DesignatorRECTANGULAR, SURFACE MOUNTING
Unthreaded Mounting Hole Diameter0.281 INCHES NOMINAL
Federal Supply Class5925 — Circuit Breakers
Overall Depth3.190 INCHES NOMINAL
Main Line Maximum Ac Voltage Ratin240.0
Center To Center Distance Between1.500 INCHES NOMINAL
Cancelled NSN5925-00-191-5035 (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 QO2L40RB available?
We can source QO2L40RB 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 QO2L40RB by Square D obsolete or end-of-life?
We specialize in obsolete, end-of-life, and discontinued components. If QO2L40RB 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 QO2L40RB?
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 QO2L40RB?
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.