Square D Q1B290 90A 2P 240V Q1 Frame Bolt-On Circuit Breaker

Retail Price: $403.00
Price: $235.00
  • SKUCB190D
In stock - 2 units available.
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Square D Q1B290 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 Q1B290 Specifications

ManufacturerSquare D / Schneider Electric
Catalog NumberQ1B290
SeriesQ1 Frame
Amperage90 A
Voltage240V AC
Poles2-Pole, common trip
MountingBolt-On
Trip functionThermal-Magnetic — common trip across all poles
Interrupting rating10 kAIC @ 240V AC
IndicationVisi-Trip® visual trip indication
Panelboardslegacy Square D NQO and NQOB panelboards
Wire range4 AWG–1/0 AWG Cu/Al
RatingsHACR rated
ListingsUL 489 listed · CSA certified
Shipping weight4.8 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

At 90 amps across 2 poles, this Q1 Frame device handles large single-phase equipment circuits and subpanel feeders. It mounts bolt-on into legacy Square D NQO and NQOB panelboards. The Q1 Frame line has been out of production long enough that matching an existing installation means the surplus channel rather than a distributor shelf, and substituting a current-production breaker means changing the panel interior as well. Each unit is inspected and tested to ESP Product Standards, including a trip test. Where the panel schedule is missing, the catalog number on the breaker face is the most reliable record of what the circuit was designed around.

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.

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