Siemens 6ES7392-1AJ00-0AA0 SIMATIC S7-300, Front connector for signal modules with screw contacts, 20-pole (Siemens 6ES73921AJ000AA0)
Siemens 6ES7392-1AM00-0AA0 SIMATIC S7-300, Front connector with screw contacts, 40-pole (Siemens 6ES73921AM000AA0)
Siemens 6ES7392-1BJ00-0AA0 SIMATIC S7-300, Front connector for signal modules with spring-loaded contacts, 20-pole (Siemens 6ES73921BJ000AA0)
Siemens 6ES7392-1BM01-0AA0 SIMATIC S7-300, Front connector for signal modules with spring-loaded contacts, 40-pole (Siemens 6ES73921BM010AA0)