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The SQDLLA36400U43X is a robust Square D 3-pole circuit breaker designed for reliable performance in demanding environments. With a rating of 400A and 600V, it ensures optimal protection for your electrical systems. Ideal for industrial applications, this breaker offers durability and reliability you can count on. Perfect for your heavy-duty needs.
The Square D LLA frame is an industrial molded-case circuit breaker (MCCB) series rated for heavy-duty applications up to 600V. The SQDLLA36400U43X carries a high interrupting rating suitable for demanding industrial environments — the exact AIC rating is noted on the breaker nameplate. Contact us and we can help verify the full interrupt spec for your application.
No — the LLA-frame is an industrial MCCB and is not compatible with residential Square D QO or Homeline loadcentres. It is designed to bolt into Square D industrial-grade panelboards and switchboards rated for 600V, 3-phase service. If you need a residential or light commercial breaker, we can help you find the right Square D QO equivalent.
Square D LLA-frame breakers at this ampacity can be difficult to find through standard distribution channels. Northern Breaker Group specializes in sourcing obsolete and hard-to-find breakers across Canada. Whether new, surplus, or reconditioned, we can often locate the SQDLLA36400U43X — reach out to our Calgary, Edmonton, or Vancouver counter for availability and lead time.
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