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The SIELD63T600 is a Siemens 600A low voltage frame trip circuit breaker designed for reliable overload and short-circuit protection. Engineered for optimal performance in industrial applications, its robust construction ensures durability and safety. Suitable for various settings, this versatile breaker meets stringent standards, making it a dependable choice for your electrical needs.
The 'LD' designation refers to Siemens' large-frame MCCB series rated up to 600A. 'Frame trip' (sometimes called 'rated trip') indicates the breaker is set at the full frame rating of 600A, meaning the thermal-magnetic trip unit is calibrated to the breaker's maximum current rating. This makes it ideal for feeder and main protection applications where the full 600A capacity is required.
Yes — the SIELD63T600 is well-suited for use as a main disconnect or feeder breaker in industrial switchboards and panelboards rated for 600V, 3-phase service. It should not be installed in residential loadcentres, as it is a large-frame MCCB intended strictly for commercial and industrial distribution equipment. Always verify your switchboard's bus rating and breaker mounting compatibility before installation.
Availability of specific Siemens LD-frame breakers can vary depending on production status. Northern Breaker Group specializes in sourcing obsolete and hard-to-find circuit breakers across Canada, including legacy Siemens MCCB frames. Whether you need a new, reconditioned, or surplus unit, contact our Calgary, Edmonton, or Vancouver counter for a quote and availability check.
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