3RB3123-4PB0 SIEMENS

The 3RB3123-4PB0 is a Siemens overload relay designed to provide comprehensive motor protection within a 1 to 4 Ampere range. This particular model is a Size S0 device, making it suitable for integration with similarly sized contactors. It offers adjustable tripping classes from 5 to 30, allowing users to tailor the protection characteristics to the specific motor and application requirements. Mounting is simplified through direct contactor mounting, and both the main and auxiliary circuits utilize screw terminals for secure and reliable connections. The relay features manual, automatic, and remote reset capabilities, enhancing operational flexibility and reducing downtime. Furthermore, it incorporates internal ground fault detection, adding an extra layer of safety by identifying and responding to ground faults within the motor circuit. This overload relay is engineered to safeguard motors against overloads and phase failures, extending their lifespan and preventing costly damage. Its robust design and comprehensive feature set make it an ideal choice for a wide range of motor control applications.