The Siemens 5SY4663-7 miniature circuit breaker is a high-performance protection device rated at 63 A and 400 V, with a breaking capacity of 10 kA. It features a 3+N-pole configuration with a C-type tripping characteristic, making it suitable for demanding applications in three-phase four-wire systems. With a compact 70 mm depth and standard DIN rail compatibility, this breaker is designed for seamless integration into modern electrical installations.
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