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The FA17070B is a reliable Square D circuit breaker designed for single-phase applications with a 70A capacity at 347V. Featuring a robust construction, it ensures optimal performance and safety in your electrical systems. Ideal for various applications, this breaker provides essential protection against overloads and short circuits. Perfect for both residential and commercial use.
No, they are not interchangeable. The FA17070B is an FA-frame molded-case breaker rated for 347V and 14kAIC, intended for commercial/light-industrial panelboards. QO and Homeline breakers are residential plug-in types with different frame dimensions, voltage ratings, and mounting systems. Always match the breaker frame and series to your specific panel.
Square D FA-frame breakers are considered a legacy/hard-to-find product line in many configurations. Northern Breaker Group specialises in obsolete and discontinued electrical equipment across Canada. Contact our Calgary, Edmonton, or Vancouver counters and we'll advise on current availability — new, reconditioned, or equivalent replacement options.
347V is a standard phase-to-neutral voltage on Canadian 600V (347/600V) distribution systems, widely used in commercial and industrial buildings across Canada. The FA17070B is specifically designed for single-phase protection on one leg of such a system — for example, protecting a 347V lighting circuit. Ensure your system voltage matches before installation.
