Miniature Circuit Breaker, QO Series, 40A, 3 Pole, 208/120V AC, 10kA at 208/120V AC, A Curve MPN:QO340GFI
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Free Shipping
In Stock
Free Shipping
In Stock
SKU
510-G3544055
Miniature Circuit Breaker, QO Series, 40A, 3 Pole, 208/120V AC, 10kA at 208/120V AC, A Curve
Protect your electrical system with the Square D QO Series 40A 3 Pole Miniature Circuit Breaker. This reliable device features a ground fault circuit interrupter (GFCI) with a 5mA Class A rating, ensuring safe and efficient operation. Suitable for use with QO load centers and NQ panelboards, it provides 10kA of maximum air rating at 208/120V AC. With its plug-in mounting style and toggle actuator, installation is easy and convenient. Ideal for residential and commercial applications, this circuit breaker offers peace of mind and helps prevent electrical fires and shocks. Trust Square D for quality and reliability.
Top product features:
- Provides ground fault circuit interrupter (Class A 5mA) protection
- Has a toggle actuator for easy manual reset
- Protects against overloads up to 10kA at 208/120V AC
Top product applications:
- Residential electrical panel
- Commercial electrical panel
- Industrial electrical panel
Miniature Circuit Breaker, Amps 40 A, AC Voltage Rating 120V AC, Circuit Breaker Type Ground Fault Circuit Interrupter (Class A - 5mA), Number of Poles 3, DC Voltage Rating Not Rated, Circuit Breaker Actuator Toggle, Circuit Breaker Mounting Style Plug In, Compatible Panelboard/Load Center Series NQ, QO, Phase Three, Series QO, Max. AIR Rating 10kA at 120V AC, For Use With QO Load Centers and NQ Panelboards, Terminal Connection Lug, Frame Size 100A/QO, Length 4.12 in, Width 2.25 in
Additional Information
- Country of Origin: MX
- Drop Ship Item: Yes
- Blind Ship Eligible: No
- LTL Freight Required: No
- Lead Time: Ships in 9 days
- Minimum Order Quantity: 1
- Unit of Measure: EA
- Package Length: 7.90
- Package Width: 7.10
- Package Height: 5.70
- Package Weight: 1.75
Product info last updated on March 21, 2026 12:04pm UTC
Category: Circuit Protection