Siemens SENTRON 5SY4 MCB, 1P, 20A, Type A, 5 kA Breaking Capacity

The Siemens Sentron miniature circuit breakers, are a type of switch used to automatically turn off electrical circuits during abnormal conditions. MCBs often replace fuses in low voltage electrical circuits as they can be more reliable, much more sensitive and are resettable. Miniature circuit breaker 230/400 V 10kA, 1-pole, A, 20A, D=70 mm.protection class IP20