Siemens 1MB2921-2BD2.-…. Description Description Siemens 1MB2921-2BD2.-…. Related products SIEMENS 1FK7103-5AF71-1DH0 SIEMENS 1FK6032-6AK71-1TA0 SIEMENS 1FK6042-6AF71-1TH0 SIEMENS 1FK6060-6AF71-1TG0 SIEMENS 1FK7042-5AK71-1FB0 SIEMENS 1FK6060-6AF71-1TA0