NEW ARRIVAL: Siemens SIPROTEC 4 7UM6211-6EB92-0CB0 Multifunction Motor Protection Relay Now in Stock
We are pleased to announce the immediate availability of the Siemens SIPROTEC 4 7UM6211-6EB92-0CB0 multifunction machine protection relay, a comprehensive protection solution for asynchronous motors and industrial drives. This 1/2x19" flush-mounting device provides seven binary inputs, twelve output relays plus watchdog contact, delivering complete motor protection in a compact form factor. Current transformer inputs support 1A secondary with sensitive earth fault detection (IEE). The relay operates from 110V to 250V DC and 115V/230V AC supply voltages, with 73V DC binary input triggering level. Screw terminals accommodate direct wiring or ring lugs, supporting robust connections in harsh industrial environments. The device features IEC/ANSI configurable protection curves and world region settings with changeable language support, enabling deployment across global manufacturing facilities, process industries, and critical infrastructure applications.

The 7UM6211-6EB92-0CB0 provides comprehensive motor protection functions including ANSI 49 (thermal overload), 50/51 (instantaneous/time overcurrent), 66 (restart inhibit), 48 (motor starting time supervision), and 51V (voltage-controlled overcurrent). Thermal modeling calculates stator winding temperature using single-body differential equations, considering coolant temperature via RTD inputs. Rotor earth-fault protection options include traditional 64R and sensitive 1-3Hz square-wave injection methods for detection through high transition resistances. The relay monitors starting current, locked rotor conditions, and acceleration time, blocking restart until safe thermal conditions are restored. Four analog outputs (0-20mA) provide real-time operational data to control systems. Integrated metering captures peak values, min/max measurements, and energy consumption statistics. Operational temperature range spans -20°C to +55°C with IP51 front protection. System interface supports PROFIBUS DP slave via rear Port B, while Port C provides DIGSI/modem connectivity via RS485 for remote diagnostics and parameter management.
The SIPROTEC 7UM6 family offers scalable protection solutions for rotating machines. The 7UM6211-5EB92-0CB0 features identical I/O configuration with alternative CT ratio options. For enhanced protection functionality, the 7UM6221-5EB92-0CB0 expands binary outputs to 20 in a full 1x19" housing. The 7UM6225-6EB92-0CB0 accommodates 5A CT secondaries for higher current applications. Customers requiring graphical display can select the 7UM6231-5EB92-0CB0 with integrated LCD and function keys. The 7UM6211-2EB91-0AA0 provides surface-mounting variant for flexible panel design. All models share consistent protection algorithms, measurement accuracy, and communication protocols, enabling standardized motor protection strategies across facility-wide deployments.