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 1FN1910-0AA20-3AA0 SIEMENS 1FN3050-4SA00-0AA0 SIEMENS 1FK7022-5AK71-1AG0 SIEMENS 1FK7044-7AF71-1EG0 SIEMENS 1FK6042-6AF71-1TB0 SIEMENS 1FN1910-0AA20-1AA0