Miniature Circuit Breaker, QO Series, 40A, 3 Pole, 120/240V AC, 10kA at 120/240V AC MPN:QO340
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Free Shipping
In Stock
Free Shipping
In Stock
SKU
510-G0837435
Miniature Circuit Breaker, QO Series, 40A, 3 Pole, 120/240V AC, 10kA at 120/240V AC
Protect your electrical system with the Square D QO Series 40A 3-Pole Miniature Circuit Breaker. This reliable device is designed for use with QO Load Centers and NQ Panelboards, providing maximum protection against overloads and short circuits. With a 10kA at 120/240V AC rating, you can trust it to safeguard your electrical system. Ideal for residential and commercial applications, this circuit breaker is perfect for use in areas with high electrical demands. Its compact size and easy installation make it a convenient solution for electrical upgrades and new construction projects, ensuring a safe and reliable electrical system.
Top product features:
- Trip protection for 40A of current
- Three-pole configuration for phase protection
- 10kA short-circuit interrupt rating for safe operation
Top product applications:
- Residential electrical panel upgrade
- Commercial electrical panel installation
- Industrial electrical panel replacement
Miniature Circuit Breaker, Amps 40 A, AC Voltage Rating 120/240V AC, Circuit Breaker Type Standard, Number of Poles 3, DC Voltage Rating 48V DC, Circuit Breaker Actuator Paddle, Circuit Breaker Mounting Style Plug In, Compatible Panelboard/Load Center Series QO, Phase Three, Series QO, Max. AIR Rating 10kA at 120/240V AC, For Use With QO Load Centers and NQ Panelboards, Terminal Connection Lug, Frame Size 100A/QO, Length 3 in, Width 2.25 in, Depth 2.91 in, Min. Operating Temp. 77 Degrees F
Additional Information
- Country of Origin: MX
- Drop Ship Item: No
- Blind Ship Eligible: No
- LTL Freight Required: No
- Lead Time: Ships in 1 days
- Minimum Order Quantity: 1
- Unit of Measure: EA
- Package Length: 3.20
- Package Width: 2.30
- Package Height: 3.30
- Package Weight: 0.83
Product info last updated on February 3, 2026 5:52pm UTC
Category: Circuit Protection