FA26100AB SQUARE D 2P 100A 600/347V AB PH I LINE
The FA26100AB is a reliable Square D 2-pole circuit breaker designed for 100A at 600/347V. This advanced breaker features an AB Phase I Line configuration, ensuring optimal performance in demanding electrical systems. Perfect for both residential and commercial applications, it offers essential protection for your circuits and equipment.
The "AB" designation refers to the Phase I Line (AB phase) configuration of the breaker — it indicates a specific line-side terminal or phasing arrangement used in Square D FA-frame MCCBs. This is important when replacing an existing breaker or ordering for a specific bus configuration; confirm your panel's phasing requirements before ordering.
Certain variants of the Square D FA-frame series have been discontinued or are difficult to source through regular distribution channels. Northern Breaker Group specializes in obsolete and hard-to-find breakers — contact our Calgary, Edmonton, or Vancouver counters and we'll locate new, reconditioned, or equivalent stock for you.
Yes — the FA26100AB is rated for 347V (phase-to-neutral on a 600V system), making it well suited for Canadian 600/347V commercial distribution systems. Always verify that the interrupting rating of 18kA meets or exceeds the available fault current at the point of installation, as required by the Canadian Electrical Code (CEC).
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