
Brand: Square D | Product No: QO240
Square D QO240 2-Pole 40-Amp Circuit Breaker
Pickup available at Sonic Distribution Center
Usually ready in 2-4 daysPairs well with
Top-Rated Store • Read Reviews
Fast Shipping • Ships in 1–2 Business Days
30-Day Returns • See Terms
Secure Checkout • SSL Encrypted
Product details
Description
QO 2-Pole Circuit Breaker - 40A, 120/240VAC Plug-In Mounting
-
Overview: QO Circuit Breakers deliver dependable overcurrent protection and switching for AC systems. Featuring a thermal magnetic mechanism and VisiTrip trip indication, these breakers ensure efficient operation and clear status feedback.
-
Key Features:
- Over-center, trip-free toggle mechanism
- Quick make, quick break action
- Positive handle indication
- VisiTrip trip indication for visual feedback
- Rated at 40A, 120/240VAC
- 10kA breaking capacity
- Plug-in mounting for easy installation
-
Additional Accessories: Explore a range of factory-installed accessories such as shunt trips, auxiliary switches, and alarm switches for enhanced functionality.
-
Certifications: UL Listed and CSA Certified, ensuring compliance with stringent safety standards.
-
Specifications:
- Number of Poles: 2P
- Circuit Breaker Type: Standard
- Electrical Connection: Box lugs
- Wire Size Compatibility: AWG 8 to AWG 2 (copper or aluminum)
- Dimensions: 3.11" (H) x 1.50" (W) x 2.91" (D)
- Weight: 0.50 lb (0.227 kg)
- Ambient Rating: Up to 104°F (40°C)
-
Ordering Details:
- Category: US1DE2A00004
- GTIN: 785901400486
- Returnability: Yes
- Country of Origin: US
Discover a hassle-free solution for your electrical protection needs with the QO 2-Pole Circuit Breaker.
Customer Reviews
If you have any questions, you are always welcome to contact us. We'll get back to you as soon as possible, within 24 hours on weekdays.
-
Shipping Information
Orders placed before 12:00 PM (PST) ship the same day or within 2 business days, with tracking provided within 72 hours. Learn more in our Shipping Policy.
-
Returns & Exchanges
Non-defective items may be returned within 30 days with a 30% restocking fee. Shipping costs are non-refundable, and return shipping is the customer’s responsibility. See our full Return Policy.
-
Top Rated Service
With a perfect 5-star rating on Google, our customers say it best—great prices, outstanding service, and a company that delivers. See why professionals choose Sonic Electric.
-
Expert Support, Anytime
Our team is ready to assist you via chat, email, or phone with product recommendations and technical guidance.
Google Rating
Years of Excellence
Happy Customers
Orders Shipped
Ways to Save on Every Order
Smart, simple savings—powered by Sonic.

3% off your First Order
Subscribe to our emails and enjoy 3% off your first purchase—exclusively for new subscribers.

5% off Malibu Products
Use code PLATINUM at checkout.

Free Ground Shipping
Available on all orders over $500. No code needed.

Lowest Price Guarantee
Found a lower price? We’ll match it.
If you see a lower price for the same in-stock item from another retailer, let us know. Just send us the ad, website link, screenshot, or photo through email or chat.
We’ll verify it and match the total price—including shipping or delivery—if the item is available to ship to your location.