Siemens Miniature circuit breaker, 3-pole, 400V, 15kA, 40AProduct Overview The 5SY7 series miniature circuit breaker is a robust protective device designed for three phase electrical installations in commercial and industrial applications. This 3 pole circuit breaker provides comprehensive protection against overload and short circuit conditions with 15 kA breaking capacity, featuring C curve tripping characteristics optimized for general applications including motor circuits, lighting, and power
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