1. The 3RV2021-4EA10 is a 3 Pole, Protactor Motor Starter Overload Relay combination unit made by Siemens. It is designed to be used as part of a motor control system.
2. The 3RV2021-4EA10 is capable of monitoring the current passing through the motor, and when it reaches a pre-programmed limit, the device will trip and open the circuit in order to protect the motor from overload. This can help prevent damage vital parts of the motor.
3. This device also features an adjustable overload differential range and adjustable motor start delay, allowing you to fine tune the devices for your application. It is equipped with 1 N/O contact, 2 N/C contacts, 1 Auxiliary Contact and 1 short circuit current rating of 10 kA. It has a rating of 10 to 25 Amps, 440-480V AC, 50/60 Hz. This device is ruggedly constructed and is suitable for long-term, reliable protection for motors and other electrical equipment.