3RV1902-1AB4 SIEMENS

The 3RV1902-1AB4 is an undervoltage release designed for use with Siemens circuit breakers in sizes S00 to S3. This device provides a crucial safety function by automatically tripping the circuit breaker when the control voltage drops below a specified threshold, typically around 70% of the rated voltage. This undervoltage release is specifically designed to operate on a 24 V DC control voltage. It ensures that the connected equipment is de-energized in the event of a voltage dip, preventing potential damage or hazardous situations. The 3RV1902-1AB4 undervoltage release offers reliable protection against unexpected voltage drops, enhancing the overall safety and reliability of electrical systems. It is commonly used in industrial applications, machinery, and control panels where maintaining a stable voltage supply is critical. This device is easy to install and integrate with compatible Siemens circuit breakers, providing a cost-effective solution for undervoltage protection. Its compact design allows for space-saving installation within the electrical panel. By preventing automatic restarts after a voltage failure, it ensures a safe and controlled recovery of the system.