BJA36040 SQUARE D 3P 40A 600Y/347V 25KA I LINE
The BJA36040 Square D 3P 40A circuit breaker is designed for reliable performance in 600Y/347V systems. With a 25kA short circuit interrupting capacity, this breaker ensures maximum protection for your electrical installations. Ideal for commercial and industrial applications, it combines durability with efficiency for peace of mind and safety.
The BJA36040 uses Square D's I-Line plug-in mounting system, so it is compatible with Square D I-Line panelboards and switchboards designed for that bus style — common in commercial and industrial facilities. It is not compatible with QO or Homeline residential loadcentres. Share your panelboard model number with us and we'll confirm compatibility before you order.
Yes — the BJA36040 is rated for 600Y/347V systems, meaning it supports both 347V line-to-neutral (single-phase loads) and 600V line-to-line (three-phase loads) within a wye-configured distribution system. This makes it well suited for Canadian commercial and industrial applications running on 600Y/347V services.
Absolutely. Sourcing obsolete and hard-to-find Square D breakers like the BJA36040 is our specialty. We maintain extensive stock of legacy I-Line frame breakers and work with a broad supplier network across Canada. Contact our Calgary, Edmonton, or Vancouver counter — or request a quote online — and we'll locate it for you.
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