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The SIEMENS SIEND63B1200 is a robust 3-pole circuit breaker with a 1200A capacity, designed for 600V applications. It features advanced thermal-magnetic protection, ensuring reliable performance and safety for your electrical systems. Ideal for industrial and commercial use, this breaker guarantees efficient circuit protection and easy installation.
The SIEND63B1200 is a bolt-on MCCB rated for industrial and commercial panelboards and switchboards that accept the Siemens SIEND frame series at 1200A/600V. It is not designed for residential loadcentres. Exact panelboard compatibility depends on bus rating and frame provisions — contact our team with your panelboard model and we'll confirm compatibility.
Yes. At 1200A and 600V (3-pole), the SIEND63B1200 is well-suited for use as a main breaker in large service entrance applications or as a feeder breaker protecting downstream distribution equipment in industrial and commercial settings. Confirm your application's available fault current (AIC) rating requirements before installation.
Large-frame MCCBs like the SIEND63B1200 can become difficult to source through standard channels. Northern Breaker Group specializes in obsolete and hard-to-find breakers, with counter locations in Calgary, Edmonton, and Vancouver. Contact us for availability and lead time — we'll do our best to source this unit for you quickly.
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