FA12070B SQUARE D 1P 70B 120/240V B PH I LINE
The FA12070B Square D 1P 70B 120/240V B PH I Line is a reliable single-pole circuit breaker designed for residential and commercial applications. With a voltage rating of 120/240V, it ensures optimal protection against overloads and short circuits. Experience durability and exceptional performance in your electrical systems with this essential component.
No, they are not interchangeable. The FA12070B belongs to Square D's FA-frame I-Line series and uses a B-phase plug-in connection designed for I-Line panelboards and switchboards. Square D QO breakers use a completely different plug-in bus design intended for QO residential loadcentres. Always verify your panel's bus type before selecting a replacement.
The 'B' in the part number indicates the Phase B position designation for I-Line bus systems. In I-Line panels, breakers are phase-specific due to the staggered bus design, so installing the wrong phase breaker can result in a poor connection or unsafe fit. Confirm your panel's phase layout before ordering — contact us and we'll help you identify the correct breaker for your position.
Yes. Sourcing obsolete and hard-to-find Square D breakers like the FA12070B is a core specialty of Northern Breaker Group. We maintain access to new-old-stock, refurbished, and equivalent-replacement inventory across our Calgary, Edmonton, and Vancouver locations. Reach out for a quote and we'll confirm availability and lead time.
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