Square D QO340 40A 3P 120/240V QO Plug-In Circuit Breaker

Retail Price: $48.99
Price: $38.00
  • SKUCR076D
In stock - 1 units available.
- +
Square D QO340 Circuit Breaker

Stock photo shown for reference only. You will receive a unit of the listed catalog number in the condition stated above, inspected and tested to ESP Product Standards. Cosmetic appearance may vary.

1-Year Operational Guarantee Every breaker we sell — new, surplus, reconditioned, or used — is guaranteed to operate normally for one year from date of sale. Product Standards
Same-Day Shipping In-stock orders placed before 12pm PST typically ship the same business day, with UPS tracking provided. Shipping details
30-Day Returns Return authorization available within 30 days of receipt. Return policy
Talk to a Real Person Questions about fit, condition, or availability? Call 800-664-4377. Credit terms available for approved accounts.
Found this part for less somewhere else? Surplus and reconditioned prices vary widely with scarcity and condition — tell us what you found and make us an offer. Include the catalog number and we’ll respond same business day: call 800-664-4377 or email us. Every ESP unit is tested and backed by our 1-year operational guarantee — make sure you’re comparing like for like.

Description

Square D QO340 Specifications

ManufacturerSquare D / Schneider Electric
Catalog NumberQO340
SeriesQO
Amperage40 A
Voltage120/240V AC · 48V DC
Poles3-Pole, common trip
MountingPlug-In
Trip functionThermal-Magnetic — common trip, individual element per pole calibrated at 40°C
Interrupting rating10 kAIC @ 120/240V AC
IndicationVisi-Trip® visual trip indication
Panel spaces3
PanelboardsQO load centers · NQOD
Wire range14–8 AWG Cu/Al
RatingsHACR rated · SWD rated
ListingsUL File E84967 · CSA Master Contract 153555
Shipping weight1.0 lb
ConditionReconditioned — 1-year operational guarantee

Sold reconditioned, inspected and tested to ESP Product Standards, and guaranteed to operate normally for one year from the date of sale.

More Details

What distinguishes the QO line is how it meets the bus: this breaker is stabbed onto the load center bus, which is why it belongs in QO load centers. The connection resists the loosening that vibration and thermal cycling work on a plug-in stab over years of service. At 40 amps and 3 poles the usual application is mid-size three-phase equipment and small motor control centers. Each unit is bench-tested and carries ESP's one-year operational guarantee from the date of sale.Wire lands under a saddle clamp, and the terminal should be torqued to the value on the breaker label rather than by feel — loose terminations account for most heat damage in panels of this age.

What is "surplus new"?

Surplus new means the item has never been installed or put into service. It may not arrive in its original packaging, but it has never been used.

What does "reconditioned" mean?

Reconditioned items have been inspected, cleaned, and tested to confirm they operate to the manufacturer's original specifications. Every reconditioned item we sell carries a one-year operational guarantee.

How fast will my order ship?

In-stock orders placed before 12pm PST usually ship the same business day via UPS, with tracking provided.

What if I can't find the item I need?

Call 800-664-4377 — we stock thousands of obsolete and hard-to-find electrical parts that may not yet be listed online.

Also in Category

Thomas & Betts QCAL-60 Circuit Breaker

Zinsco QCAL-60 60A 2-Pole 120/240V Circuit Breaker

Zinsco / GTE Sylvania / Challenger / Thomas & Betts QCAL-60 60A 2-Pole 120/240V AC Plug-In Circuit Breaker — Original Manufacture, Individually Tested (Connecticut Electric UBIZ260 equivalent)

$85.00
Other products by Square D