Siemens NSB 3UA5800-2C Relays

Siemens 3UA5800-2C overload relay is a thermal motor-protection device in the 3UA5800 family, designed to work with Siemens 3TF contactors to guard motors against overload and short-circuit conditions in automation panels. As a plug-in overload relay, it mounts with compatible Siemens contactors to monitor motor current and trip the circuit when preset overload or thermal limits are exceeded, helping to prevent motor damage and unplanned downtime. The 3UA5800-2C is part of a family that includes variants such as 3UA5800-2CZ1, 3UA5800-2DZ1, and 3UA5800-2EZ1, offering compatible options for different installation environments while maintaining the same plug-in interface and protection concept.