Siemens 3UA5000-0A is a thermal-delayed overload relay designed for mounting on Siemens contactors to protect small three-phase motors. It provides a current setting range of 0.1 to 0.16 A and includes a 1NO+1NC auxiliary contact for signaling. The unit is intended for mounting onto Siemens starters, with compatibility noted for 3TF30/31 contactors. This 3UA overload relay sits within Siemens' low-voltage motor-control products and offers thermal protection by interrupting motor current when overheating is detected.
