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The FH26070AC SQUARE D 2P 70A 600/347V AC PH I LINE circuit breaker is designed for reliable protection in industrial and commercial applications. With a two-pole configuration and a robust 70A capacity, it ensures efficient power distribution. This breaker meets high-quality standards, ensuring optimal performance and safety for your electrical systems.
No, they cannot be interchanged. The FH frame is a full molded-case (MCCB) series rated up to 600V and designed for commercial/industrial panelboards and switchboards. Square D QO and QOB breakers are residential/light-commercial plug-in or bolt-on devices rated to 120/240V and are physically and electrically incompatible with FH-frame equipment.
Northern Breaker Group specialises in obsolete and hard-to-find breakers, so we may have new, reconditioned, or surplus FH26070AC units in stock. If unavailable, a compatible Square D replacement in the same frame with matching 2P/70A/600V/18kA ratings may be an option. Contact us with your full panel details and we'll source the best solution for you.
The 'AC' suffix on Square D FH-frame breakers denotes the breaker's application type and trip characteristics — in this case indicating standard AC service. It is important to specify the correct suffix when ordering a replacement, as other suffix variants (e.g. DC-rated or different trip classes) are not interchangeable even within the same frame size and amperage rating.
