Siemens 3RV1902-1DB0 Voltage Release

The voltage release, also known as undervoltage release or shunt trip, with type number 3RV1902-1DB0 from Siemens is an electrical module for the control and protection of switching devices in electrical systems. It has the dimensions 9 x 7 x 2 cm and weighs 0.11 kg. Voltage releases serve to automatically trip switching devices such as miniature circuit breakers or motor protection circuit breakers in abnormal voltage conditions, such as undervoltage or power failure, thereby ensuring the safety and operation of electrical systems. Typical applications are found in automation technology for the safe shutdown of machines, and in building technology to ensure emergency power supply.