Siemens Circuit Breakers Circuit breaker 613669 - Siemens 5SY43066, The Siemens 5SY43066 5SY4306-6 circuit breaker is a reliable device with a current rating of 6 A, suitable for voltages of 230 V and 400 V. This circuit breaker is used to protect electrical installations from overload and short circuits. It is typically employed in residential and light commercial applications. Siemens 5SY43066 Circuit Breaker 6 A 230/400 V pin Busbar touch-safe
