or 250°F thermal protection when paired with the appropriate Siemens ASK791 series links

If the motor is hot to the touch or the run capacitor shows signs of bulging

the electronic actuator must be selected and purchased separately based on your control signal requirements

While both share the same 58-inch outside length

Siemens Industrial Controls 3RU2126-4BB0 Relay 318820-201 or 250°F thermal protection whenThe Siemens 3RU2126 4BB0 is a thermal overload relay designed for current dependent protection of loads with normal starting requirements. This S0 frame size component features an adjustment current range of 14 to 20 Amps, making it a standard solution for Class 10 motor protection. Built for seamless integration, it utilizes screw terminals for secure conductor termination and is specifically engineered for direct mounting onto SIRIUS 3RT2