Siemens 5SP3863-2 Description Description Siemens MAIN CONDUCTOR CIRCUIT-BREAKER (SHU),3X1-POLE,E 63 A,230/400 V FOR MOUNTING ONTO 40MM BUSBAR Related products SIEMENS 1FT5072-0AC01-0-Z SIEMENS 1FK7042-5AK71-1FB0 SIEMENS 1FK6060-6AF71-1TA0 SIEMENS 1FK6042-6AF71-1TB0 SIEMENS 1FK7022-5AK71-1DA0 SIEMENS 1FK7060-5AF71-1FH3