QO240 - Square D - 40 Amp Circuit Breaker

Plug-In - 40 Amp - 2 Pole - 240 Volt

QO240 - Square D 40 Amp Double Pole Circuit Breaker
QO240 - Square D - 40 Amp Circuit Breaker

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QO240 - Square D - 40 Amp Circuit Breaker

Plug-In - 40 Amp - 2 Pole - 240 Volt

Regular price $38.00 Sale price $23.00 Save $15
  • In stock and ready to ship
  • Inventory on the way
Rush shipping options calculated at checkout.
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  • FREE & fast shipping on orders over $49
  • CSA approved with 1 year warranty
  • 30 day returns

QO240 - Square D QO 2 Pole 40 Amp Breaker

QO Circuit Breakers provide the high level of protection you expect from Square D. When it comes to electrical protection, fast response is critical and QO Circuit Breakers can trip faster than the blink of an eye.


  • Manufacturer : Schneider Electric
  • Type QO Series
  • For use in Square D branded QO residential panels.
  • Cat. No. : QO240
  • Dimensions (H x W x L): 3" x 1.50" x 3"
  • 2 Pole
  • 40 Amp
  • 120/240 Volt
  • Connection : Plug-In
  • Phase : 1
  • Interrupting Rating 10000 Ampere
  • Authentic Square D Product
  • CSA Approved and UL Listed

Alt Model: q0240

Returns are easy

You may return items within 30 days of delivery for a full refund.

View our return policy

FREE Shipping on orders over $49.

Canada Breakers offers one to five day delivery in Canada & United States. The variation depends on the warehouse location for the product(s).

Same Day Shipping

We strive to ship out your items within one business day.

In rare circumstances, Canada Breakers may reserve up to 5 business days to complete shipment. Feel free to contact us if your order is time sensitive.

Product Warranty - QO240 - Square D - 40 Amp Circuit Breaker

All products carry a 1-year warranty from Canada Breakers. All products sold by Canada Breakers are authentic, factory new and CSA approved.

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Customer Reviews

Based on 36 reviews
Dan Laing
Very good

Order shipped complete and on time

Andrew Colgan

QO240 - Square D - 40 Amp Circuit Breaker


Canada Breakers is one of the best companies I've dealt with for online electrical. Good pricing and very fast shipping is very much appreciated!

Shane Steele
quick and fast and low cost

price is great and quick delivery, will be ordering again

Hassle free order and return and reorder

Easy order parts. Orders the wrong breaker spot returned done and ordered the right one. Fast, easy purchase and refund process.


QO240 - Square D - 40 Amp Circuit Breaker

Henry Woodings
ORDER 69104-C, Charged twice

Charge 2 times for one order.............

Hi Henry,

Without seeing what you see on your end, I'm guessing this is confusion over a posted and not posted transaction on your online banking activity. If that's the case, one of those transactions will eventually disappear.

If this doesn't resolve itself, it might be worth reaching out to your bank to confirm there's an issue. I'd be very surprised if you were actually double charged by Shopify's payment processor but if there's an issue, please let us know and we can escalate it to Shopify.

Zia Siddiqui

QO240 - Square D - 40 Amp Circuit Breaker