Siemens Miniature circuit breaker 230/400V 6kA 1-pole, C, 4AProduct Overview The Siemens 5SY6104 7 is a high performance miniature circuit breaker designed for reliable electrical protection in commercial and industrial applications. This 1 pole circuit breaker features a 4 A current rating with 230 400 V operational voltage and 6 kA breaking capacity, making it ideal for protecting low current single phase electrical circuits and sensitive equipment from overloads and short circuits. Key Features 6 kA