Siemens 3UA54002A Thermal Overload Relay 10 to 16 A

Siemens 3UA54002A is a thermal overload relay from the 3UA family, designed for motor protection in industrial control panels by interrupting current when a motor draws unsafe levels. It covers a 10–16 A operating range (10-16 A) and is cataloged as 3UA54002A (also referenced as 3UA54-00-2A), a model within Siemens World Series overload relays. This device serves as the protection element in Siemens motor-starting schemes, typically pairing with compatible contactors to form a complete motor protection circuit. The 3UA54 series relays monitor line current and trip when the preset current is exceeded, helping prevent motor overheating and damage to connected equipment. It provides a compact thermal protection solution within Siemens' motor protection portfolio for a wide range of industrial motors.