P/N: 510.293, Type: HC510-OC-480-10-SL obsolete/alternative P/N: 510.431, Type: HC510-OC2-480-10-I-SL
P/N:510.304(Type HC510-RK-4) obsolete,alternatives 510.324(Type HC510-RK-4-230) or 510.315(Type HC510-RK-4-115)